audiovisual design standards.docx

8/10/2019 Audiovisual Design Standards.docx

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AUDIOVISUAL DESIGN STANDARDS

TABLE OF CONTENT

Executive Summary ............................................................................................................................. 4

More information .................................................................................................................................. 4

Review ........................................................................................................................................................ 4

1.1 Room design for learning and teaching spaces ............................................................... 4

1.1.1 Sight lines and screen-viewing distances ....................................................................... 4

1.1.2 Vertical and horizontal projector placement ................................................................. 5

1.1.3 Minimum projector brightness ............................................................................................ 5

1.1.4 Minimum projector contrast ratio ....................................................................................... 6

1.1.5 Projector, display and screen aspect ratio ........................................................................ 6

1.1.6 Dual displays ................................................................................................................................... 6

1.1.7 Flat panel technology ................................................................................................................... 6

1.2 Acoustical design in learning and teaching spaces ............................................................ 6

1.2.1 Acoustic performance ................................................................................................................... 6

1.2.2 Ambient sound levels .................................................................................................................... 7

1.2.3 Reverberation times........................................................................................................................ 7

1.3 Lighting design in learning and teaching spaces ........................................................................................ 8

1.3.1 Relevant lighting standards ........................................................................................................... 8

1.3.2 Lighting control and lighting zones ................................................................................................ 8

1.3.3 Ambient light spill on projector screen .......................................................................................... 8

1.3.4 Target light level ........................................................................................................................... 9

1.3.4 Occupancy sensing ........................................................................................................................ 9

1.3.5 Lighting control system and AV control system integration ............................................................ 9

1.4 Audio system design in learning and teaching spaces ............................................................................. 10

1.4.1 Audio replay and voice reinforcement ......................................................................................... 10

1.4.2 Speaker system selection and placement .................................................................................... 10

1.4.3 Audio mixing ............................................................................................................................... 11

1.4.4 Power amplifiers ......................................................................................................................... 11

1.4.5 Equipment installation ................................................................................................................ 11

1.4.6 Hearing augmentation and induction loops ................................................................................. 11

1.4.7 Grounding ................................................................................................................................... 12

1.4.8 Integration into EWIS .................................................................................................................. 12

1.5 Lecture recording systems ...................................................................................................................... 12

1.5.1 Audio recording .......................................................................................................................... 12

1.5.2 Screen capture ............................................................................................................................ 13


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1.5.3 Camera provision ........................................................................................................................ 13

1.5.4 Dual screen recording ................................................................................................................. 13

1.6 Whiteboards and writing surfaces .......................................................................................................... 14

1.6.1 Standard specifications and board height .................................................................................... 14

1.6.2 Multiple sliding boards ................................................................................................................ 14

1.6.3 Board lighting ............................................................................................................................. 14

1.7 Centralisation and structured cabling systems ........................................................................................ 14

1.7.1 Audiovisual centralisation approach ............................................................................................ 15

1.7.2 Centralisation exceptions ............................................................................................................ 15

1.7.3 Signal delivery and cabling .......................................................................................................... 15

1.7.4 UTP converters ........................................................................................................................... 16

1.7.5 Power management, climate control and risk mitigation ............................................................. 16

1.8 Specific room types ................................................................................................................................ 16

1.8.1 Lecture theatres (tiered teaching spaces) scope ........................................................................... 17

1.8.2 Class rooms (flat f loor spaces) scope ........................................................................................... 18

1.8.3 Meeting rooms (videoconference rooms if required) scope ......................................................... 19

1.8.4 Flexible teaching spaces scope .................................................................................................... 19

1.9 Audiovisual equipment specifications .................................................................................................... 20

1.9.1 Projection screens ....................................................................................................................... 20

1.9.2 Data projectors General minimum specification ........................................................................ 20

1.9.3 Data projectors Large venues (Auditoriums) ............................................................................. 21

1.9.4 Data projectors Lecture theatres .............................................................................................. 21

1.9.5 Data projectors - Classrooms ....................................................................................................... 21

1.9.6 Flat panel displays ....................................................................................................................... 22

1.9.7 Projector and flat panel mounts .................................................................................................. 22

1.9.8 Central controller ........................................................................................................................ 22

1.9.9 AV Control system interface (Touchpanel) ................................................................................... 23

1.9.10 Audio and video router ............................................................................................................. 23

1.9.11 Scalar ........................................................................................................................................ 23

1.9.12 Audio signal processing ............................................................................................................. 23

1.9.13 Speaker systems ....................................................................................................................... 24

1.9.14 Amplifiers ................................................................................................................................. 24

1.9.15 Lectern microphones ................................................................................................................. 24

1.9.16 Radio microphones ................................................................................................................... 24

1.9.17 Document cameras ................................................................................................................... 24

1.9.18 DVD/Blu-Ray players ................................................................................................................. 25

1.9.19 Desktop Computer .................................................................................................................... 25


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1.9.20 Cabling and management .......................................................................................................... 25

1.9.21 Cable labelling ........................................................................................................................... 25

1.9.22 Connector types ........................................................................................................................ 25

1.9.23 Equipment rack ......................................................................................................................... 26

1.10 Service Desk phone in learning and teaching spaces .................................................. 26

1.10.1 In-house phone ......................................................................................................................... 26

1.10.2 Outside of venue (at door) phone .............................................................................................. 26

1.11 Documentation .................................................................................................................................... 26

1.11.1 Construction drawings .............................................................................................................. 26

1.11.2 Post contract documentation .................................................................................................... 27

1.12 Testing, commissioning and handover .................................................................................................. 27

Glossary and Definitions .............................................................................................................................. 27

About this Document .................................................................................................................................. 29

Appendix 1 UTAS AV Design Standards Metric Table ................................................................................. 29

Appendix 2 Mobile Lecture Recording Solutions ........................................................................................ 4 5

Appendix 3 Lectern Design ........................................................................................................................ 47


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EXECUTIVE SUMMARYThis is to set out the definition of Audiovisual (AV) Standards for the University and colleges and the application of those standards

across all supported learning and teaching spaces. It specifies the standardization and categorization of audiovisual equipment,

design standards, learning and teaching spaces and amenities available to all staff, students and associates.

The objective of these standards is to define:

The minimum AV requirements for all learning and teaching spaces

A framework to standardize AV technology and infrastructure

To provide a means of identifying and upgrading, where required, any sub-standard learning and teaching spaces.

All Educational AV technology and infrastructure is to be of a standardized environment in all supported learning and teaching

spaces. It is the purpose of this document to identify this standard and to provide a framework that all learning and teaching spaces

are to adhere to.

1.1 ROOM DESIGN FOR LEARNING AND TEACHING SPACESRoom design is integral to providing a best practice solution for all learning and teaching spaces. It is recommended that at the

project design stage all considerations of the following provisions are entered into, to produce the best possible solution for these

spaces. This is the responsibility of the appropriate organizational unit who is accountable for the room design features in a given

learning and teaching space.

1.1.1 Sight lines and screen-viewing distancesLearning and teaching spaces at require the capability to display information by means of data projection and other display

technology. Consideration and advice to the responsible organisational unit at the planning stage of allowable sight-lines and screen

viewing distances is fundamental to the success of any learning and teaching space. Having these standards accepted and

incorporated at the design stage forms a critical aspect to delivering an acceptable level of information display recognition by the

viewer. Consideration must be given to the ability to view and interpret the information displayed from all areas of the learning and

teaching space. These specifications form the nucleus of any design for learning and teaching spaces.

The following guidelines on appropriate sight-lines and screen-viewing distances are to be considered when designing, refurbishing

and upgrading any learning and teaching space:

The maximum viewing distance can be determined by the height of the screen, which will, in turn, determine the furthest allowable

viewing position at a factor of 5.3.

This is displayed as the following: Screen Height = the furthest allowable viewing position/5.3

The minimum viewing distance is determined by the closest viewer position (at the front row, centre). This position shall not be

any closer than twice the screen height at that position.

The maximum allowable horizontal viewing angle will be no more than 45 degrees to the centre sight-line of the screen.

The maximum allowable vertical viewing angle will be no more than 15 degrees to the centre of the display measured from the

front centre viewing position.

The bottom edge of the screen shall be no less than 1.3 metres above the floor.

The minimum ceiling height will be determined by the maximum viewing distance rule and the screen height above the floor.

Consideration will need to be given to determining the best outcome for sight-lines and screen-viewing distance when refurbishing.

Special provisions to meet this standard may be needed.

1.1.2 Vertical and horizontal projector placementCareful consideration needs to be given to the placement of the projector. The placement of the projector is determined by the

following guidelines:

The vertical position of the projector must not obstruct the view of the screen for any viewer in that space.

The vertical and horizontal placement should adhere to the projector manufacturers recommended vertical position.

Use of key-stoning must be kept to a minimum.

The placement of the projector must provide ease of access for the performance of maintenance and repairs.

Consideration to reduce projection glare in lecturers eyes.

Projector security mount are a must to be used.

In existing learning and teaching spaces current geometry may prevent this specification from being met. Consideration will need to

be made to determining the best outcome for the viewing of information on these displays and special provisions to this standard

may need to be met.

1.1.3 Minimum projector brightnessThe recommended projector brightness is determined by screen size, which, in turn, is proportional to the venue size. The following

guidelines are to be taken into consideration when deciding minimum projector brightness:

The targeted projected Lux for small to medium sized venues, where screen sizes are no more than 3.5 metres diagonally, must be

no less than 500Lux, preferably 600+ Lux.


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The target projected Lux for larger venues, where screen sizes are more than 3.5 metres diagonal ly, must be no less than 315Lux,preferably 500+ Lux. These specifications will help to determine the correct projector for the venue and will help to identify the ANSI

Lumens specification for that projector.

In larger venues, reduction in ambient light at and around the screen will need to be considered to reduce loss of projected Lux on the

screen. This is addressed in the Ambient light spill on projector screen provision of this Standard.

1.1.4 Minimum projector contrast ratioContrast ratios will allow for the legibility of information that is projected on the screen from all viewing angles within the learning

and teaching space. The following guidelines outline the minimum required contrast ratio:

Text and numerals, when displayed on the projector screen, must meet an aspect ratio of 5:1.

Photos, pictures and any graphical representation, when displayed on the projector screen, must meet a contrast ratio of 10 :1. Videos must display on the projector screen at a contrast ratio of 25:1.

These measurements are defined as the ratio between the measured values of incident light on the projection screen when outputting

full field white and full field black. This takes into consideration all sources of light, both projected and ambient.

1.1.5 Projector, display and screen aspect ratioDue to the move away from 4:3 aspect ratios and the subsequent phasing out of the production and support of these devices, and the

adoption of a high definition environment, the standard aspect ratio for displays in centrally-managed learning and teaching spaces

will be a minimum of 16:9.

1.1.6 Dual displaysCentrally-managed learning and teaching spaces are to incorporate dual displays where practical and where this requirement is

stipulated in the design process. The following guidelines detail the requirements for dual displays implementation:

Dual projection with dual displays is a requirement for lecture theatres.

Not all venues are able to meet these requirements and may need only one single projection, single image configuration. A variation

to this provision can be sought from the project manager.

1.1.7 Flat panel technologyFlat panel technologies can be implemented into small venues. These venues are defined by the Specific room types section of this

standard. The following guidelines are to be followed for installation of flat panels:

Placement is in accordance with all rules that govern the placement of projector scr eens, see Minimum projector brightness,

Minimum projector contrast ratio, Vertical and horizontal projector placement, Sight lines and screen-viewing distances and

Projector, display and screen aspect ratio.

Flat panel technology is the preferred visualdisplay in meeting rooms that perform video conferencing functions.

1.2 ACOUSTICAL DESIGN IN LEARNING AND TEACHING SPACESAcoustical design is integral to providing a best practice solution. It is recommended that at the project design stage that an acoustic

consultant be contracted to advise on and recommend the best possible solution.

1.2.1 Acoustic performanceIt is essential to the delivery of best acoustic performance that the acoustical design is considered when upgrading, refurbishing or

designing any new or existing learning and teaching space. Acoustic performance in learning and teaching spaces must comply with

the following International Standards:

AS/NZS 2107:2000 Acoustics Recommended design sound levels and reverberation times for building interiors

AS/NZS ISO 717.1:2004 Acoustics - Rating of sound insulation in buildings and of building elements- Airborne sound insulation.

Acoustical performance must be measured using the Speech Transmission Index (STI). No learning and teaching space may score less

than good with an STI less than 0.6. The desired score for acoustical performance for any venue is excellent with an STI of 1.0. The

signal to noise ratio is to be kept to a minimum with a benchmark 25dB(A) to ensure audio intelligibility.

1.2.2 Ambient sound levelsThe level of ambient sound must be kept to a minimum. Conversely, a sound-dead room is to be avoided as well. Ambient noise

generators such as air-conditioning units and mechanical delivery devices located near the learning and teaching space must be

avoided or mitigated at best. Advice from the acoustic consultant must be adhered to in the design process of any new or existing

space to deliver acceptable levels of ambient sound.

The following guidelines detail the acceptable and best practice standards for ambient sound. The room types are defined as per the

Specific Room Types section in this Standard:

Room type: Lecture theatre (Tiered Teaching Spaces) must have a minimum ambient noise level of 45db(A) and a best practice level

of 35dB(A)

Room type: Classrooms (Flat Room Spaces) must have a minimum ambient noise level of 35db(A) and a best practice level of30dB(A)

Room type: Meeting Rooms (Videoconference/Board Rooms) must have a minimum ambient noise level of 40db(A) and a best

practice level of 35dB(A)


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Room type: Flexible Teaching Spaces must have a minimum ambient noise level of 35db(A) and a best practice level of 30dB(A)

1.2.3 Reverberation timesReverberation and all associated audio anomalies such as standing waves, early and late reflections need to be considered. The

following guidelines, as defined by the Standard AS 2107-2000, are to be considered to mitigate reverberation issues in these spaces.

These are meant as general guidelines only as the RT60 will vary depending on room size:

Room type: 50 seat classrooms will have a maximum reverberation time of 1.0 second and a best practice level of 0.7 seconds.

Room type: Lecture theatres will have a maximum reverberation time of 1.0 second and a best practice level of 0.7 seconds

Room type: Flexible teaching spaces will have a maximum reverberation time of 0.6 seconds and a best practice level of 0.4 secs

Room type: Conference and meeting rooms will have a max reverberation time of 0.7 secs and a best practice level of 0.6 secs

The reduction of shiny surfaces, the use of sound traps and the mitigation of box or rectangular rooms and regular surfaces willreduce the occurrence of standing waves and alleviate most reverberation issues. Reverberation is unavoidable but measures need to

be in place to minimise its effect, especially where it makes the delivery of audio un-intelligible.

Technology-based solutions are available to address these issues, such as a focussed sound field solution through the use of array-

style speaker systems. These solutions can be implemented only in the case where no other option is available.

1.3 LIGHTING DESIGN IN LEARNING AND TEACHING SPACESIt is recommended that at the project design stage a lighting consultant is contracted to advise and recommend the best possible

solution.

1.3.1 Relevant lighting standardsLighting is governed by the Indian or International Standards - AS/NZS 1680 for Lighting (as amended) and the government and

building codes. The sections of the standard that must be adhered to are as follows:

AS/NZS 1680.2.1:2008 (as amended) Interior and workplace lighting - Specific applications - Circulation spaces and other general

areas. AS/NZS 1680.2.2:2008 (as amended) Interior and workplace lighting - Specific applications - Office and screen-based tasks.

AS/NZS 1680.2.3:2008 (as amended) Interior and workplace lighting - Specific applications - Educational and training facilities.

1.3.2 Lighting control and lighting zonesLighting will need to be controlled centrally through the AV control system. This will require the zoning of particular lights on

particular circuits to allow control of the lighting. The following points detail the guidelines to follow when considering the

implementation of lighting that will be controlled and zoned by the AV control system in supported UTAS learning and teaching

spaces.

The number of lighting zones will be dependent on the room type:

Front lights and board lights that spill directly onto the screen and white board respectively.

Directional lighting to illuminate the lectern position or other front of house task areas. This may incorporate the use of multiple

lighting zones to cover larger venues front-of-house areas and/or task areas. These lights will not produce any spill on to the screen

and will have the ability to control the beam onto the specific intended area. Aisle, step and emergency lights for venues that have steps and/or aisles. This is a legislative requirement (General Fire Regulations

2000 S.R. 2000, No. 236) and must be part of the design.

Room lights depending on the size and purpose of the room and may have multiple zones to configure the room with differing levels

of illumination in different areas of that room.

All the zones that are to be controlled by the AV control system can either have a dimmable or switching function depending on the

role of the lighting and the size of the venue. Task-specific lighting may be switchable, whereas room lighting will need to be

dimmable. It is the responsibility of the appropriate organisational unit to provide, on recommendation from the lighting consultant,

the correct light fittings with the capacity and compatibility to be controlled by the AV control system.

1.3.3 Ambient light spill on projector screenAn acceptable amount of ambient light on the projector screen is determined by the dimensions of the room, ambient illumination

measured on the screen and the projected versus ambient light ratio. The following guidelines provide acceptable ambient light

measurements:

The amount of ambient illumination on the screen in small venues will be no more than 100Lux maximum.

The amount of ambient illumination on the screen in large venues will be no more than 60Lux maximum.

Consideration must be given to light-coloured chattels, furniture and flooring near projection screens. These may inadvertently

reflect an unacceptable level of ambient light onto the screen. Consideration must also be given to the location of light-generating

devices such as computer screens and document cameras near the projection screens, as these too might inadvertently reflect and/or

project an unacceptable amount of ambient light onto the screen.

It is a requirement that a lighting consultant be engaged to provide the best solution for lighting. Computer modelling at the design

stage is to be undertaken to determine if the lighting designs will or will not provide acceptable levels of spill light on the projection

screen and the designs must be amended accordingly until these provisions are met.

External ambient light sources need to be controlled. Blinds and/or curtains are to be used to control ambient light sources.

Motorised blinds and/or curtains are to be installed in all venues and must be integrated into the AV control system.


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1.3.4 Target light levelIt is a requirement in learning and teaching spaces to have programmable lighting modes to accompany differing stages of room use.

The following guidelines stipulate these modes and define what the lighting state is to be:

Full - Full room lights. Entry and exit mode. 320-360 Lux.

AV Slightly dimmed room lights. Appropriate task areas lights on. Front lights off. Projection and note taking mode. Min light level

240 Lux.

Dimm Fully dimmed room lights. All other lights off. Projection mode. 60-80 Lux.

Off No room lights. No other lights except aisle and step lights. Presentation mode.

1.3.4 Occupancy sensingThe lighting system must have the capability to monitor occupancy in the room and perform accordingly. The following guidelines

details the lighting system actions required for differing states of occupancy detection:

Full room lights when triggered. This desired state is stipulated as Full in the Target light level provision.

Turn off all lighting when no motion is detected after 90mins as per energy management requirements.

The occupancy sensing is complementary to the AV control system and is to be integrated into, and must be compatible with, the

Building Management System (BMS) to trigger events controlled by this system such as climate control.

1.3.5 Lighting control system and AV control system integrationLighting systems must integrate into the AV control system, the BMS and the Emergency Warning and Information System (EWIS).

These systems can interface either by a serial or IP interface. The following guidelines outline the necessary functionality and

compatibility of the lighting control system:

The AV control system must be able to control all lighting and light control devices such as blinds and curtains.

The lighting control system must be able to trigger BMS settings such as occupancy sensing and climate control.

Integration of the lighting control system is to be considered at the design stage for any new or existing learning and teaching space

to allow for the proper selection of a system that will meet all of these guidelines.

1.4 AUDIO SYSTEM DESIGN IN LEARNING AND TEACHING SPACESAt all stages of design for learning and teaching spaces, audio system design is of critical consideration and will have to deliver the

best audio solution for these spaces. Audio system design and all associated equipment implemented must comply with performance

and installation standards defined by:

AS/NZS 60065:2003 & Amendment No. 1 (January 2008) Audio, video and similar electronic apparatusSafety requirements.

AS 60118.4-2007 Hearing Aids Magnetic Field strength in audio-frequency induction loops for hearing aid purposes.

Disability (Access to Premises Buildings) Standards 2010.

These standards will be complied with when considering the design, installation and maintenance of all audio systems.

1.4.1 Audio replay and voice reinforcementThe capability of audio replay from all sources and voice reinforcement will be incorporated into larger classrooms and lecture

theatres as set out in the Specific room type section in this standard. The following guidelines outline the requirements for audio

replay and voice reinforcement:

Rooms that are classified as learning and teaching spaces are to incorporate a Digital Signal Processor (DSP) to allow for the

dedication of the required outputs to MyMedia Service.

Rooms classified only learning (tutorial) spaces will only require an Audio Relay capability.

Voice reinforcement systems are to have at least four microphone input facilities. If there is a requirement for a hearing induction loop as specified in the Hearing augmentation and inductions loop provision, refer

to the provision for details.

Background sounds will be at least 20 decibels lower than foreground sounds, or approximately four times quieter than the

foreground speech.

Further technical specifications of the audio replay and voice reinforcement systems can be found in the Audiovisual equipmentspecification section of this standard.

1.4.2 Speaker system selection and placementSelection of speaker systems for implementation in learning and teaching spaces will vary from venue to venue depending on size

and function. This relates to the actual audio design required to provide full audio coverage and high intelligibility of voice

reinforcement to the listening area, for those spaces that require it.

Provisions will need to be made at the acoustical design stage, with the assistance of computer modelling, to determine the correct

number, the placement and technical specifications of the speakers to meet the requirements in this provision. The following is a set

of guidelines that provide a framework to assist in the selection and placement of the speaker system:

A targeted distribution of voice reinforcement at all listening positions at a minimum of 65dBA.

A targeted distribution of audio replay at all listening positions at a minimum of 80dBA.

Measurement of audio coverage is determined by the ANSI/INFOCOMM 1M-2009 Standard.


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Consideration of complementary speaker systems (distributed speakers or speaker arrays), depending on the venues geometry andacoustical performance to provide compliance with audio coverage requirements.

A minimum of two Front of House (FOH) speakers in all venues. Zoning and speaker delay systems to be considered where there are issues with FOH and distributed speaker systems provid ing an

unintelligible amount of delay variation to the listening position.

Further technical specifications of the speaker systems can be found in the Audiovisual equipment specification section of this

standard.

1.4.3 Audio mixingAll audio mixing will be performed by the specified range of Digital Signal Processors (DSP) as outlined in the Audio visual equipment

specification section of this standard depending on room type as outlined in the Specific room type section of this standard.

The following guidelines outline the functionality, compatibility and capability that the DSP will need to comply with:

Must be programmable. Must provide network control capability.

Must be able to communicate to the AV control system via an RS-232 or IP interface.

Must provide the specified amount of inputs and outputs for that room specification. Must be able to perform audio dynamic processing, routing and mixing, a range of equalisation tasks, filtering and delay controls.

All outputs need to be able to be independently controlled and have the above processing applied to them independent of all other

outputs.

Learning and teaching spaces that incorporate videoconference capability, will require the DSP to perform echo cancellation.

Further technical specifications of the DSP can be found in the Audiovisual equipment specification section of this standard

1.4.4 Power amplifiersHigh quality power amplifiers that match the power requirements of the speaker system are to be implemented in all learning and

teaching spaces. The following guidelines outline the requirements for power amplifiers:

10dB headroom to handle peaks over unity gain to accommodate target audio r eplay requirements as stipulated by the Speakersystem selection and placement provision in this Standard.

Power amplifiers will carry a D class energy efficiency rating.

The number of amplification channels is dependent on the number of speakers to be implemented in the venue.

Further technical specifications of the power amplifier can be found in the Audiovisual equipment specification section of this

standard.

1.4.5 Equipment installationAll supported Standard learning and teaching spaces audio systems will be installed in accordance with International AV Installation

Handbook The Best Practices for Quality Audiovisual Systems and in particular sections 2.9 and 2.10 of this reference, and in

accordance with any other relevant Standards.

1.4.6 Hearing augmentation and induction loops Section 3 (Situations Requiring Hearing Augmentation) of AS1428.5

(Communication for people who are deaf or hearing impaired) states that a meeting space of 100m2 or larger that includes a voice

reinforcement system, must have a minimum of 80% of its floor space covered by an assistive listening system. The requirements for

an induction loop are contained in AS60118-4.

The following guidelines stipulate the hearing augmentation and induction loop requirements:

Induction loops must be installed in all rooms that have voice reinforcement systems.

The induction loop amplifiers must be able to monitor induction loops for faults and report back to the control system for fault

flagging.

Induction loops must be designed on a room-by-room basis with initial noise analysis being completed prior to design and the

systems commissioned to appropriate legislative standard.

1.4.7 GroundingAudio systems are susceptible to interference caused by a range of issues that are a direct result of non-grounded equipment. The

following guidelines outline the requirements for the grounding of equipment to mitigate non-grounded related audio interference:

It is recommended that all audio equipment is connected to a single power supply with all equipment on a single phase with a star

earthing arrangement.

A technical earth is also appropriate in complex systems and is to be considered in the design phase.

The equipment rack is to be grounded to provide a chassis earth for equipment.

All equipment is to be of the balanced type for common mode rejection and reduction of interference from Radio Frequency (R F)

and Electro Magnetic Interference (EMI) sources.

Unbalanced equipment is to be used for short wiring runs.


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Balancing transformers are to be used to balance the signal on longer runs.

This provision is to be implemented on all applicable AV equipment.

1.4.8 Integration into EWISAll audio systems will need to be integrated into the EWIS. Advice should be sought from appropriate stakeholder and/or

organisational unit to recommend the appropriate actions the audio system will require taking in such events.

The following is a guideline for emergency-initiated actions that an audio system should take:

Mute all sound.

Enable playback of alarms and/or announcements.

The appropriate fire/electrical engineer responsible for the administration of the EWIS must be consulted and their

recommendations must be followed.

1.5 Lecture recording systemsLecture recording services via MyMedia Service are installed in a number of learning and teaching spaces throughout UTAS. It is

possible that additional venues will have this capability in the future. Therefore, all learning and teaching spaces that incorporate

voice reinforcement should be designed with the intention of these recording services being implemented.

1.5.1 Audio recordingAll recordings from venues via MyMedia Service consist of an audio component. Audio is normally received from the venue through a

number of feeds from various devices. The following guidelines outline the requirements for audio system capabilities in order to be

able to provide appropriate services to MyMedia Service:

Professional line-level audio input with bare wire termination for direct wiring of stereo balanced (non-powered) or unbalancedaudio (+4dBu/1.228Vrms/1.737Vpk signal)

1.5.2 Screen captureThe majority of recording from venues via MyMedia Service contain screen capture (a visual feed + audio feed), that is typically

captured from the data projector. This normally includes house computer screen, local (laptop) computer screen, document camera,

and/or other similar content players. The following guidelines outline the current requirements for the video system capabilities to

be able to integrate with MyMedia Service:

VGA feed in supported capture resolutions onlyo 800x600 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1024x768 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1280x700 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1280x720 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1280x768 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1280x800 60Hz, 70Hz, 72Hz, 75Hz, 85Hzo 1280x1024 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1366x800 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1440x900 60Hz, 70Hz, 72Hz, 75Hz, 85Hz

o 1680x1050 60Hz

o 1920x1080 60Hz

o 1920x1200 60Hz.

The following guidelines outline the preferred requirements for the video system capabilities to be able to integrate with MyMedia

Service:

Capture input resolutions from 640x480 to 1920x1200 (Scaled to the H.264 standard of 1088 maximum number of lines)

All input aspect ratios supported

Digital or analogue input via DVI-I connector, passively adaptable to VGA or HDMI input.

1.5.3 Camera provisionMyMedia Service can also record a video feed (lecturer or other video content). The following guidelines outline the current minimal

requirements for the camera capture capabilities for MyMedia Service:

Analogue (composite) video input

NTSC or PAL.

The following guidelines outline the preferred requirements for the camera capture capabilities for MyMedia Service:

Digital (HDMI) or Analogue (composite) video input

NTSC or PAL

Full Screen (4:3) standard definition input resolutions from QCIF to D1

Widescreen (16:9) high definition input resolution from 480p to 1080p.

1.5.4 Dual screen recordingMyMedia Service can provide dual visual feed recording functionality. Currently it only facilitates a screen + video feed. From 2012

onwards dual screen recording will be possible. The use of dual visual feed recordings is currently low, but requirements for this

functionality (and AV equipment to support it) may increase in the future and hence be provided for.


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Standard AV equipment that requires direct user interaction such as projectors, display screens, content players and the house

computer will be mounted according to normal conditions in each room. If an amplifier is more than 30 metres away from the

speakers then the location of the amplifier will be either in the ceiling space on a custom bracket with a clearly marked access panel

or, where there is a local AV rack present, mounted in that.

1.7.2 Centralisation exceptionsExceptions should only be authorised where one of the following conditions are present:

Only intended as a temporary setup

In a small building without a dedicated communications room

In a single stand-alone AV space without IT infrastructure

In a single small AV space within a building with little likelihood of any form of expansion unless via a full internal refurbishment

project.All steps need to be taken to accommodate the need for AV centralisation but in some cases these exceptions can be made.

1.7.3 Signal delivery and cablingSignal delivery for centralised AV will run over structured communications cabling with the preferred method being UTP,

incorporating the use of existing IP networks present in most venues. Structured cabling design needs to take into account any AV

cabling requirements additional to traditional network communications including:

Patch panels within AV racks linking them to patch frames.

Wall mounted outlets for field devices such as wall plates, displays and small racks with interactive devices or amplifiers.

Floor box outlets used by laptops, microphones and amplifiers.

Ceiling or in-ceiling mounted outlets for devices such as speakers, amplifiers, projectors and microphones.

Cabling must meet stringent manufacturer standards to eliminate interference from external sources.All outlets should be installed and terminated in accordance with the relevant structured cabling standards and are not required to be

differentiated for AV use during installation as every outlet should be able to handle both AV and IP signals.

1.7.4 UTP convertersThe type of UTP converters chosen need to be matched between the transmitter and receiver ends for an optimised solution. The

following guidelines are to be followed when considering UTP converters types:

The ability to convey the signal over the distance to the centralised AV equipment and back to the venue without data or

performance loss.

Demonstrate a long life cycle and be compatible with emerging and future technology.

Designed to be able to convert and carry audio, visual and control data from all sources.

Demonstrate the ability to integrate with existing network infrastructure. Ability to carry high definition visual signals over the required distance to and from the FCR and local room without a discernable

loss in data and/or performance.

Incorporate auto skew elimination for visual data paths.

The implementation of UTP structured cabling and the use of FCR requires the rack-mounted equipment (matrix switches/switches)

to be UTP based. This will eliminate the requirement for the signals travelling back from the local room to be converted, processed

and then re-converted back to the UTP protocol and sent back to the local room.

1.7.5 Power management, climate control and risk mitigationDue to the nature of AV centralisation it is possible to apply power management to all devices in-house. With the use of UPS, in the

case of power outages, the venues that have centralised AV equipment can still deliver a service. This provides the added benefit in

emergencies allowing the AV equipment that is incorporated into the EWIS to display appropriate advice to those venues. The follow

considerations need to be taken into account when designing centralised AV installations to mitigate risk and incorporate power

management:

All AV equipment, in local room and in FCR, must be connected to a UPS and be able to deliver service in case of outage.

Contractors who are responsible for the installation of the network infrastructure need to conform to the AV equipment and

especially the UTP converter standards to deliver the appropriate level of service.

AV equipment in the FCR needs to have a dedicated power circuit and not share this with any other non-AV devices. FCRs require cooling to mitigate the risk of overheating. As most IT node rooms meet this requirement, this should be taken into

consideration if the introduction of AV equipment into these spaces exceeds the allowable operating temperatures.

There is an inherent risk of the poor delivery of AV services to venues if manufacturers standards are not met when implemen ting

centralised AV equipment.

1.8 SPECIFIC ROOM TYPESLearning and teaching spaces come in different sizes and shapes and serve different uses. The following section deals with the specific

room types and the AV requirement for these spaces. The definitions of the room types conform to terminology used throughout

UTAS, in particular timetabling, to reduce confusion over the specific room type and use. In practical terms there are four room types:

They are

Lecture Theatres (Tiered teaching spaces)

Classrooms (Flat room spaces)

Meeting rooms (Videoconference rooms) and

Flexible teaching spaces.


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These room types will be referenced against the UTAS terminology for teaching spaces. The following provisions are designed to

identify the AV equipment for these spaces separately.

1.8.1 Lecture theatres (tiered teaching spaces) scopeThe AV system in lecture theatres must provide the following levels of functionality.

Lectern and control:

Fixed lectern as per UTAS standard

Occupancy sensors

Interactive AV control interface integrated with lighting, audio and visual devices

Lectern light with separate control from AV control system

Service Desk direct dialling phone

Remote AV system monitoring.

Lighting

Full control via the AV control system by user

Separate control of lighting zones

Automated control of lighting system to reflect differing projection states.

IT and computing

Lectern-mounted computer with adjustable monitor and network connections

Separate monitor for display of other sourced content (Document Camera, DVD, Videoconference)

2 x USB (minimum) ports for user interaction

Laptop connection point, on lectern, incorporating power, video (VGA), audio (RCA) and Ethernet port

Wireless network coverage.

Projection and display

Dual fixed projectors displaying minimum 10:1

Projectors are to be WUXGA

Appropriate measures to secure projector

Preview monitor screen (as stipulated in the IT and computing section of this provision)

Video signal processing and switching

Whiteboards.

Content players and imaging devices

Multi format and multi zone content players for replay of video, DVD and audio sources

Document camera

AUX inputs for portable video equipment.

Audio

Voice reinforcement and program replay systems

EWIS muting interface

Lectern mounted gooseneck microphone

Lapel microphone

Handheld microphone


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Hearing Augmentation and Induction Loop

Appropriate sound proofing measures.

Recording

Lecture recording as per Lecture recording systems specification of this standard

Image capture from all projected sources

Desired (future) camera capture of lecturer.

Videoconferencing

If required, should conform and meet the requirements of the Videoconference section and provisions of this standard.

1.8.2 Class rooms (flat floor spaces) scope

Lectern and control

Either fixed or moveable lectern with suitable cable management

Occupancy sensors

Interactive AV Control interface integrated with lighting, audio and visual devices




Lighting


Separate controlof lighting zones

Automated control of lighting system to reflect differing projection states.

IT and computing

Lectern mounted PC with adjustable monitor and network connections

Separate monitor for display of other sourced content (Document Camera, DVD, Videoconference)



Wireless network coverage.


Dual fixed projectors displaying at least 16:9 aspect

Projectors are to be HD (WXGA)

Appropriate security measure to secure projector

Preview monitor screen (as stipulated in the IT and Computing section of this provision)


Whiteboards (wall mounted or mobile).



Document camera

Audio


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Lapel microphone

Hearing Augmentation and Induction Loop


Recording

Lecture recording asper lecture recording specification of this standard



Videoconferencing

If required, should conform and meet the requirements of the Videoconference section andprovisions of this standard.

1.8.3 Meeting rooms (videoconference rooms if required) scope

Please refer to the Videoconference provision of this standard.

1.8.4 Flexible teaching spaces scope Lectern and control

Either fixed or moveable lectern with suitable cable management

Entry and Exit switches and/or occupancy sensors

Interactive AV control interface integrated with lighting, audio and visual devices


Alternative AV control points throughout the space to allow flexibility within the space

Ability to zone areas for audio and visual presentations throughout the venue



Lighting


Separate control of lighting zones

Automated control of lighting system to reflect differing projection states

The ability to accommodate zoned teaching areas within these spaces.

IT and computing

Lectern mounted computer with adjustable monitor and network connections



Wireless networkcoverage

Incorporation of pod computer units throughout the space that are mobile and are able to be connected into the AV system via wall

mounted connection points.


Fixed projectors displaying at least 16:9 aspect ratio and with at least a minimum of 1080p resolution


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Number of projectors and location throughout the space are defined by the design of the space

Ability to project from different zones, sources and content

Appropriate security measure to secure projectors

Projector to automatically switch between 4:3 to 16:9 as required


Whiteboards (wall mounted or mobile).



Document camera(s)

AUX inputs for portable video equipment.

Audio



Ability to zone audio in different teaching areas of this space


Lapel microphone

Handheld microphone

Hearing Augmentation and Induction Loop (if required)


Recording

Lecture recording as per lecture recording specification of this standard



Videoconferencing

If required, should conform and meet the requirements of the Videoconference section and provisions of this standard.

1.9 Audiovisual equipment specifications

The following outlines a standardised list of equipment and specifications for AV equipment in learning and teaching spaces. Due to

the rapid change of technology this list should be considered as minimum requirements when deciding on equipment. This section is

open to amendments and may change in accordance with the normal review process.

1.9.1 Projection screens

The following guidelines outline the minimum requirements for projection screens:

Screen to be matt white fibreglass surface, with 50mm black boarder. All screens to be in 16:10 format unless noted.

Where the geometry of the room will accommodate, fixed frame screens are the preference.

Tutorial rooms may require chain drive screens and motorised screens are required where the screen is over 100 size or cannot be

accessed by the user.

Motorised screens are to be top roller type up to 200, for over 200 a bottom roller is also required.

Special application screens may be required for special purpose spaces that will include high gain or rear projections surfaces. In

these cases it is up to the discretion of the project manager to provide advice on the implementation of these projection surfaces.

1.9.2 Data projectors

General minimum specification


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The following guidelines are minimum requirements for any data projector deployed in any learning and teaching space.

Suitable for permanent installation and continuous use

Minimum Native resolution of WXGA

Minimum Light output equal to 5000 lumens

Contrast ratio of at least 550:1

Lamp life typically 2000 hours or better

Vertical and horizontal lens shift

RS-232 control

Lamp and filter change/cleaning for a ceiling mounted unit must be possible without dismounting or altering the pan and tilt.

With emerging technology and the move towards structured cabling systems, it is desired, but not mandatory that the data projector

has an inbuilt UTP converter.

Due to existing learning and teaching space geometry, it is not always possible to work within the boundaries of this provision. There

may be a need to employ different solutions that will still deliver the desired level of service from the data projector. Special

provisions can be made to meet these requirements.

The following provisions detail the requirements and specifications for data projectors in particular venues.

1.9.3 Data projectors

Large venues (Auditoriums)

The projector for large venues must meet the following minimum requirements:

Minimum of 6500 ANSI lumen

Full high definition chip set WUXGA (1920 x 1200)

Full range of lenses

Multiple lamps for redundancy

Minimum contrast ratio of 2000:1

Minimum lens shift of +/- 40% vertical , +/- 10% horizontal

Minimum Inputs ; RGBHV/YPbPr ( 5 x BNC) , VGA (HD15), DVI-D, S-Video and composite video

RS232 controllable.

The specifications are designed as a minimum; in very large spaces the requirements will be greater.

1.9.4 Data projectors Lecture theatres

The projector for lecture theatres must meet the following minimum requirements:

Minimum of 6000 ANSI lumen

Full high definition chip set WUXGA (1920 x 1200)

Full range of lenses

Multiple lamps for redundancy

Minimum contrast ratio of 2000:1

Minimum lens shift of +/- 40% vertical , +/- 10% horizontal

Minimum Inputs ; RGBHV/YPbPr (5 x BNC) , VGA (HD15), DVI-D, S-Video and composite video

RS-232 controllable

1.9.5 Data projectors - Classrooms

The projector or proposed solution must meet the following specification:


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Lecture capture device

Projection screens

Curtains if applicable

Guidelines for minimum specification requirements for central controllers:

Configurable RS-232 / RS-422 / RS-485 Serial ports

Relays

IR/Serial ports

Digital I/O ports

Network Connectivity

There are no values given to the specified number of I/O ports for the controller. These are min requirement and the required

available I/O ports will be dictated by the system design and the standard equipment list.

1.9.9 AV Control system interface (Touch-panel)

AV control system user interface must meet the following minimum requirements:

Integrate with the central controller for full control of system devices

The standard AV Control System User interface is standardized for specific room types and can be found in the Standard EquipmentList supplementary to this standard.

1.9.10 Audio and video router

Guidelines for minimum specifications of the video and audio router:

8 x 6 matrix switcher for VGA

2 x 2 matrix switcher for composite video and S-video

14 x 6 matrix switcher for stereo audio

Composite video and S-video transcoding scalar

Audio input gain and attenuation

Audio output volume adjustment and muting

Remote monitoring and control

RS-232 control ports.

1.9.11 Scalar

Guidelines for minimum specifications of the scalar:

Inputs: Composite video on BNC, S-video on 4-pin mini DIN

Outputs: Scaled RGB output on 15-pin HD

Scales composite video and S-video sources

RGB output rates from 640x480 to 1366x768

Auto switching between inputs

Frame rate conversion

Picture controls for brightness, contrast, colour, tint, detail, horizontal and vertical positioning and sizing

3:2 NTSC and 2:2 PAL pull down detection

RS-232 serial control.

1.9.12 Audio signal processing


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Guidelines for minimum functionality and specifications of the Audio signal processor:

10 balanced mic/line inputs

6 balanced mic/line outputs

Ethernet port for software configuration/control

RS-232 serial for remote control

Mix, route, combine, EQ, delay, control

Ability to select, view and calibrate

Dynamics: leveller, comp/limiter, ducker, ANC

Routers: 2x1 ~ 32x32

Delays: 0 ~ 2000 ms

Line level


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Automatic squelch adjustment

Frequency lockable

Battery level indicator

Minimum 8 hour battery life.

1.9.17 Document cameras

Minimum requirements for document cameras:

Minimum resolution of 1024 x768

Minimum frame rate of 20fps

6 x zoom (optical)

Top light

Flexible gooseneck mounting

Auto white balance and focus ability

Analogue VGA output format

RS-232 controllable.

1.9.18 DVD/Blu-Ray playersMinimum requirements for DVD/Blu-Ray Players:

IR Controllable

Consumer grade device

Multi region

Playback capability: CD, CD-R/RW, VCD, DVD, DVD+/-RW, MP3, WMA and JPEG.

1.9.19 Desktop ProcessorMinimum requirements for Desktop Processor:

Minimum Output Resolution: 1024 x 768

Preferred output resolution: 1920 x 1200

Dedicated minimum graphics: 512 MB

Dual DVI output

4 GB RAM

Integrated sound

1.9.20 Cabling and management

All cabling types are to be chosen for purpose and conform to best practice. Installation of all cabling including factors such as bend

radius and cable management must conform to manufacturer specification.

Coaxial:

75 ohm cabling including RGBHV, YUV, S-Video and Composite

Crimp or compression connectors and tools are to be the items specified by the cable manufacturer only.

Strain relief boots are tobe used on all terminations.

Coaxial cabling type to be used for recommended distances (dependent on bandwidth) only.

Audio line level cabling:

Installation type cabling to be single pair, 100% shield (foil type) cable with drain wire

Audio flexible cable is to be star quad flexible braided cable.


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Speaker cable is to be double insulated multi strand style.

1.9.21 Cable labelling

All cable ends must be clearly labelled, with a self-laminating label between 50-100mm back from connector or termination. The label

shall duplicate the equipment connection details and show source, destination and cable ID number.

1.9.22 Connector types

Video/RGBHV:

Pre-moulded HD-15 to BNC-F adapters should be used where RGBHV cable connects to VGA HD-15 connectors on equipment.

Field soldered VGA terminations are not to be used.

Audio:

Commercial grade connectors to be used throughout for balanced (XLR, TRS) and unbalanced (RCA, TS) connections.

Phoenix:

Phoenix connectors with extended flat cable clamp areas are to be used. Bare wire terminations are not to be solder tinned.

Serial/Data/D-Connectors:

D connectors should have plastic, clip-together back shells with integral cable clamp and thumbscrews.

RJ-45 connectors should match the cable type (solid/stranded) and shall have boots.

Pre-moulded Cat5 cables are to be used for short runs.

1.9.23 Equipment rack

An IEC 19 14 RU equipment rack is required in each appropriate area to house the main audiovisual equipment. Minimum

requirements:

600mm deep unit.

Open frame style.

Cable management, rack trays and rack power are to be provided.

All rack screws are to be black and cage nuts are to be 8mm .

Black washers are to be used for all equipment.

1.10 Service Desk phone in learning and teaching spaces

A phone will be made available for all learning and teaching spaces. The following provisions deal with the requirements and criteria

for the implementation of Service Desk phones in these spaces. There are two types of installation as discussed below.

1.10.1 In-house phone

An in-house phone is to be installed where an in-house computer is present in the learning and teaching space. The following

guidelines are to be met when installing the phone:

To be installed on the lectern or as close as practical to the AV or IT equipment in the venue.

Locked down to call only University internal numbers.

1.10.2 Outside of venue (at door) phone

An outside of venue phone is to be installed where there is a centrally controlled (Security) locking system on the venue door. The

following guidelines and criteria are to be met when installing these types of phones:

To be installed next to the door or asclose as practical.

Locked down to call only University internal numbers.

1.11 Documentation


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As part of any works undertaken in supported learning and teaching spaces, full and complete drawings must be submitted and

recorded for the purpose of these works.

1.11.1 Construction drawings

Contractors are to prepare and submit shop drawings before commencing manufacture or installation. These are to be prepared

using AS1102 Drafting Standard symbols with a legend. Drawings to include:

Audio schematic

Video schematic

Control schematic

Room layout - detailing cable runs, conduits and equipment location

Room elevation

Rack layout

All custom-built structures, penetrations.

1.11.2 Post contract documentation

Contractors are to supply the documentation outlined below. As-Built drawings (Supplied in soft and hard copy) to include:

Audio schematic

Video schematic

Control schematic

Room layout - detailing cable runs, conduits and equipment location

Room elevation

Rack layout

All custom built structures, penetrations

Schematics to include device model and description, cable numbers, cable types and device input/output connection.

AV Control System coding:

Touch panel files

All relevant files.

Inventory details are to include:

Make and Model and equipment function

Serial number

University bar code number

Warranty expiry date.

Installation manuals to include:

Contact details of responsible parties

Service contact details

As-built drawings

Description of installation including system descriptions

Operating instructions

Maintenance procedures

All equipment operating manuals are to be provided online.


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1.12 Testing, commissioning and handover

Commissioning is to be arranged to verify the operation of all equipment items and each system. Commissioning will be attended by

the Universitys representative and signed off. All equipment is to be tested and a written test report is to be submitted fo r each

system. Format for each test required is to be approved by the University prior to testing.

Glossary and Definitions

A/D - D/A

Analogue to Digital Digital to Analogue

ANSI American National Standards Institute

BMS Building Management System

Codec Video/Audio Coder/Decoder

DSP Digital Sound Processor

DVD Digital Video Disc

EWIS Emergency Warning and Information System

FCR Floor Communication Room

FM Frequency Modulation

FOH Front of House

H.264 standard A standard for video compression

IEC International Electro technical Commission, an international standards organization dealing with electrical, electronic and related

technologies

IP Internet Protocol

IR Infra Red

IT Information Technology

LCD Liquid Crystal Display

Lux Unit of luminance measuring luminous power per area MyMedia Service

UTAS Lecture Recording System

NTSC Colour encoding system (National Television System Committee)

Ohm Unit of electrical resistance

PAL Colour encoding system (Phase Alternating Line)

QCIF Quarter Common Intermediate Format

RCA Audio Connector (Radio Corporation of America)

RS-232 Recommended Standard 232 (Serial Port)

RT60 Time required for reflections of a direct sound to decay by 60db below the level of the direct sound

S/N Ratio Signal to noise ratio

Standing Wave A sound wave that remains in a constant position

STI Speech Transmission Index

Unity Gain Where both input and output are at the same voltage level and impedance

UPS Uninterrupted Power Supply

UTP Unshielded Twisted Pair


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VGA Video Graphics Array

WUXGA Widescreen Ultra Extended Graphics Array

WXGA Widescreen Extended Graphics Array

XGA Extended Graphics Array

XLR Type of audio connector

Appendix 1 UTAS AV Design Standards Metric Table

ROOM XXX, XXX BUILDING (XX.XXXXArchibus) - University of Tasmania, XXXCAMPUSXXX

LOCATION

Organisation Site

Room Name

Address

Google Map

Room phone number

Room capacity

Room Usage

Room type

AV Design Standards Provision

1.1.0 ROOM DESIGN FOR TEACHING AND LEARNING SPACES

1.1.1 Sight Lines and Screen Viewing Distances

User Requirement Statement

How requirement is met

Assessment

1.1.1 The maximum viewing distance can be determined by the height of the screen which will in turn determine the furthest

allowable viewing position at a factor of 5.3

1.1.1 The minimum viewing distance is determined by the closest viewer position. This position shall not be any closer than twice the

screen height at that position.

1.1.1 The maximum allowable horizontal viewing angle will be no more than 45 degrees to the centre sight line of the screen.

1.1.1 The maximum allowable vertical viewing angle will be no more than 15 degrees to the centre of the display measured from the

front centre viewing position

1.1.1 The bottom edge of the screen shall be no less than 1.3 metres above the floor.

1.1.1 The minimum ceiling height will be determined by the maximum viewing distance rule and the screen height above the floor

1.1.2 Vertical and Horizontal Projector Placement



Assessment

1.1.2 The vertical position of the projector shall not obstruct the view of the screen for any viewer in that space


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1.1.2 The vertical and horizontal placement should adhere to the projectors manufacturer recommended vertical position

1.1.2 Use of key stoning shall be kept to a minimum

1.1.2 The placement of the projector shall provide ease of access to be able to perform maintenance and repairs

1.1.2 Consideration to reduce projection glare in lecturers eyes.

1.1.2 UTAS approved security mount must be used.

1.1.3 Minimum Projector Brightness



Assessment

1.1.3 The targeted projected Lux for small to medium sized venues, where screen sizes are no more than 3.5 metres diagonally, must

be no less than 500Lux, preferably 600+ Lux.

1.1.3 The target projected Lux for larger venues, where screen sizes are more than 3.5 metres diagonally, must be no less than

315Lux, preferably 500+ Lux

1.1.4 Minimum Projector Contrast Ratio



Assessment

1.1.4 Text and numerals when displayed on the projector screen will need to meet an aspect ratio of 5:1

1.1.4 Photos, pictures and any graphical representation when displayed on the projector screen will need to meet an aspect ratio of

10:1

1.1.4 Videos will need to be able to display on the projector screen at a ratio of 25:1

1.1.5 Projector, Display and Screen Aspect Ratio



Assessment

1.1.5 The standard aspect ratio for displays in UTAS supported teaching and learning spaces will be a minimum of 16:9

1.1.6 Dual Displays


Not all venues are capable or are mandated to meet these requirements and may need only one single projection, single image

configuration. A variation to this provision can be sought


Assessment

1.1.6 Dual projection with dual displays is a requirement for lecture theatres.

1.1.7 Flat Panel Technology


The acoustical performance of teaching and learning spaces shall be measured using the Speech Transmission Index (STI)


Assessment

1.1.7 Placement is in accordance with all rules that govern the placement and implementation for projector screens


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1.2.0 ACOUSTICAL DESIGN IN TEACHING AND LEARNING SPACES

1.2.1 Acoustic Performance


The acoustical performance of teaching and learning spaces shall be measured using the Speech Transmission Index (STI)


Assessment

1.2.1 No teaching and learning space will score less than good with a STI less than 0.6

1.2.1 The desired score for acoustical performance for any venue is excellent with a STI of 1.0

1.2.1 The signal to noise ratio is to be kept to a minimum with a benchmark 25dB(A) to ensure audio intelligibility

1.2.2 Ambient Sound Levels



Assessment

1.2.2 Room type: Lecture theatre (Tiered Teaching Spaces) will have a minimum ambient noise level of 45db(A) and a best practice

level of 35dB(A)

1.2.2 Room type: Classrooms (Flat Room Spaces) will have a minimum ambient noise level of 35db(A) and a best practice level of

30dB(A)

1.2.2 Room type: Meeting Rooms (Video Conference/Board Rooms) will have a minimum ambient noise level of 40db(A) and a best

practice level of 35dB(A)

1.2.2 Room type: Flexible Teaching Spaces will have a minimum ambient noise level of 35db(A) and a best practice level of 30dB(A)

1.2.3 Reverberation Times



Assessment

1.2.3 Room type: >50 seat classroom - Will have a maximum reverberation time of 1.0 second and a best practice level of 0.7 seconds

1.2.3 Room type: Lecture theatre - Will have a maximum reverberation time of 1.0 second and a best practice level of 0.7 seconds

1.2.3 Room type: Flexible Teaching Spaces - Will have a maximum reverberation time of 0.6 seconds and a best practice level of 0.4

seconds

1.2.3 Room type: Conference and meeting rooms - Will have a maximum reverberation time of 0.7 seconds and a best practice level of

0.6 seconds

1.3.0 LIGHTING DESIGN IN TEACHING AND LEARNING SPACES

1.3.1 Relevant Lighting Standards


Lighting is governed by the Australian and New Zealand Standards - AS/NZS 1680 for Lighting (as amended) and the relevant

government and building codes


Assessment

1.3.2 Lighting Control and Lighting Zones



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Assessment

1.3.2 Front lights and board lights that spill directly onto the screen and white board respectively

1.3.2 Directional lighting to illuminate the lectern position or other front-of- house task areas. This may incorporate the use ofmultiple lighting zones to cover larger venues front of house areas and/or task areas. These lights will not produce any sp ill on to the

screen and will have the ability to control the beam onto the specific area that it is intended

1.3.2 Aisle, step and emergency lights for venues that have steps and/or aisles and require this type of lighting. This is a legislative

requirement and will be part of the design for the sort of venue that requires it.

1.3.2 Room lights depending on the size and purpose of the room and may have multiple zones to configure the room with differing

levels of illumination in different areas of that room

1.3.3 Ambient Light Spill on Projector Screen



Assessment

1.3.3 The amount of ambient illumination on the screen in small venues will be no more than 100Lux maximum

1.3.3 The amount of ambient illumination on the screen in large venues will be no more than 60Lux maximum

1.3.4 Target Light Levels


It is a requirement in teaching and learning spaces to have programmable lighting modes to accompany differing stages of room use


Assessment

1.3.4 Full Full room lights. Entry and exit mode. 320-360 Lux.

1.3.4 AV Slightly dimmed room lights. Appropriate task areas lights on. Front lights off. Projection and note taking mode. Min light

level 240 Lux.

1.3.4 Dimm Fully dimmed room lights. All other lights off. Projection mode. 60-80 Lux.

1.3.4 Off No room lights. No other lights except aisle and step lights. Presentation Mode.

1.3.5 Occupancy Sensing



Assessment

1.3.5 Full room lights when triggered. This desired state is stipulated as Full in the Target Light Level provision

1.3.5 Turn off all lighting when no motion is detected after 90 minutes as per energy management requirements.

1.3.6 Lighting Control System and AV Control System Integration



Assessment

1.3.6 The ability for the AV control system to control all lighting and light control devices such as blinds and curtains

1.3.6 The ability for the Lighting Control System to trigger Building Management System events such as occupancy sensing and

climate control


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1.4.0 AUDIO SYSTEM DESIGN IN TEACHING AND LEARNING SPACES

1.4.1 Audio Replay and Voice Reinforcement



Assessment

1.4.1 Rooms that are classified teaching spaces are to incorporate a Digital Signal Processor (DSP) to allow for the dedication of the

required outputs to MyMedia Service

1.4.1 Rooms classified only learning (tutorial) spaces will only require an Audio Relay capability

1.4.1 Voice reinforcement systems are to have at least four microphone input facilities

1.4.1 Background sounds will be at least 20 decibels lower than foreground sounds, or approximately four times quieter than the

foreground speech

1.4.2 Speaker System Selection and Placement



Assessment

1.4.2 A targeted distribution of voice reinforcement at all listening positions of a minimum of 65dBA

1.4.2 A targeted distribution of audio replay at all listening positions of a minimum of 80dBA

1.4.2 A consideration of complimentary speaker systems (distributed speakers or speaker arrays), depending on the venues

geometry and acoustical performance to provide compliance with audio coverage requirements

1.4.2 A minimum of two Front of House (FOH) speakers in all venues

1.4.2 Zoning and speaker delay systems to be considered where issues with FOH and distributed speakers systems providing an

unintelligible amount of delay variation to the listening position

1.4.3 Audio Mixing


The following guidelines outline the functionality, compatibility and capability that the DSP will need to comply with:


Assessment

1.4.3 Will need to be programmable

1.4.3 Will need to provide network control capability.

1.4.3 Will need to be able to communicate to the AV controls system via a RS232 or IP interface

1.4.3 Perform audio dynamic processing, routing and mixing, a range of equalisation tasks, filtering and delay controls

1.4.3 All outputs need to be able to be independently controlled and have the above processing applied to them independent of all

other outputs

1.4.3 Teaching and learning spaces that incorporate video conference capability, will require the DSP to perform echo cancellation

1.4.4 Power Amplifiers



Assessment


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1.4.4 10dB headroom to handle peaks over unity gain to accommodate target audio replay requirements as stipulated by the Speaker

System Selection and Placement provision in this Standard

1.4.4 Power amplifiers will carry a D class energy efficiency rating

1.4.4 The number of amplification channels is dependent on the number of speakers to be implemented in the venue

1.4.5 Equipment Installation


All supported UTAS teaching and learning spaces audio systems will be installed in accordance with InfoComm AV Installation

Handbook The Best Practices for Quality Audiovisual Systems and in particular sections 2.9 and 2.10 of this reference, and in

accordance with any other relevant Australian Standards.


Assessment

1.4.6 Hearing Augmentation and Induction Loops



Assessment

1.4.6 Induction loops are to be installed in all rooms that have voice reinforcement systems

1.4.6 The induction loop amplifiers are to be able to monitor induction loops for faults and report back to the control system for fault

flagging

1.4.6 Induction loops are to be designed on a room by room basis with initial noise analysis being completed prior to design and the

systems are to be commission to appropriate legislative standard

1.4.7 Grounding



Assessment

1.4.7 It is recommended that all audio equipment is connected to a single power supply with all equipment on a single phase with a

star earthing arrangement

1.4.7 A technical earth is also appropriate in complex systems and is to be considered in the design phase

1.4.7 The equipment rack is to be grounded to provide a chassis earth for equipment

1.4.7 All equipment is to be of the balanced type for common mode rejection and reduction of interference from Radio Frequency

(RF) and Electro Magnetic Interference (EMI) sources

1.4.7 Unbalanced equipment is to be used for short wiring runs

1.4.7 Balancing transformers are to be used to balance the signal on longer runs

1.4.8 Integration into EWIS


All audio systems will need to be integrated into the EWIS

How requirement is met Assessment

1.4.8 Trigger - Mute all sound

1.4.8 Trigger - Enable playback of alarms and/or announcements

1.5.0 LECTURE RECORDING SYSTEMS

1.5.1 Audio recording


30/44



Assessment

1.5.1 Professional line-level audio input with bare wire termination for direct wiring of stereo balanced (non-powered) or

unbalanced audio (+4dBu/1.228Vrms/1.737Vpk signal)

1.5.2 Screen Capture


The following guidelines outline the preferred requirements for the video system capabilities to be able to integrate with the

MyMedia Service:


Assessment

1.5.2 Capture input resolutions from 640x480 to 1920x1200 (Scaled to the H.264 standard of 1088 maximum number of lines)

1.5.2 All input aspect ratios supported

1.5.2 Digital or analog input via DVI-I connector, passively adaptable to VGA or HDMI input

1.5.3 Camera Provision


The following guidelines outline the current minimal requirements for the camera capture capabilities for MyMedia Service:


Assessment

1.5.3 Digital (HDMI) or Analog (composite) video input

1.5.3 NTSC or PAL

1.5.3 Full Screen (4:3) standard definition input resolutions from QCIF to D1

1.5.3 Widescreen (16:9) high definition input resolution from 480p to 1080p

1.6.0 WHITEBOARDS AND WRITING SURFACES

1.6.1 Standard Specifications and Board Height



Assessment

1.6.1 All writing surfaces are to be whiteboards with surfaces of enamel on steel

1.6.1 The bottom edge of the rear board will be no higher than 0.9 metres and no lower than 0.85 metres

1.

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