Alpha Tech Program

Recap Module 8Recap Module 8

Module 9: Digital MultimediaModule 9: Digital Multimedia

Lesson 1 Digital TechnologyDescribe the benefits of digital technology.

Explain how digital technology expands the features of media devices.

Lesson 2 Introduction to Digital AudioIdentify the characteristics of digital audio.

Explain the concepts of recording, copying, and converting digital audio.

Create an audio piece to practice features learnt

Identify the features of speech technologies.

Lesson 3 Introduction to Digital VideoIdentify the characteristics of digital video.

Explain what digital video editing is and the output formats for digital video.Create a video to practice features learnt

Identify the features of Web video technologies.

Lesson 4 Introduction to Digital PhotographyExplain the benefits, features, and working of a digital camera.

Explain how to edit and manage digital images.

Create a collage to practice features learnt

Identify the features of different types of printers that are available for printing photos

Benefits Of Digital TechnologyBenefits Of Digital Technology

• Audio and Video Players

• MP3 players, CD players, and DVD players play audio or video

• MP3 format reduces file size

• Cell phone / Smart phone

• a wireless phone

• connect to the Internet,

• check your e-mail

• download songs and games

• take pictures,

• record short video clips

• play music and games

• transmit pictures and videos

• Portable video game system– Similar to computer– Play from hard-disk– Transfer audio video images to disk– Listen to audio– Watch movies

• Personal Digital Assistant– a handheld computer – a personal organizer– address book, task list, and calculator. – connect it to the Internet – play multimedia files

• Digital Camera– stores images digitally on a memory card or a

mini hard disk– print images directly to a digital printer.

• Digital Video Cameras– record both video and audio – Store in a digital format on card or DVD or hard

disk• Webcam

– captures images – Transmits images across the Internet

Statement True False

1 A smart phone CANNOT organize and store information.

2 A smart phone CAN organize and store information.

3 A PDA is used to organize information.

4 An XBOX is used to organize information.

5 You CANNOT use an Xbox to play audio.

6 You CAN use an Xbox to play audio.

7 You CANNOT edit photographs taken using a digital camera.

8 You CAN edit photographs taken using a digital camera.

9 A digital camera stores images on a FILM.

10 A digital camera stores images in its MEMORY.

11 You CANNOT play games online by using an Xbox.

12 You CAN play games online by using an Xbox.

13 Videoconferencing can be held between MULTIPLE people.

14 Videoconferencing can be held only between TWO people.

15 A Webcam IS NOT a digital video camera.

16 A Webcam IS a digital video camera.

17 A digital camcorder records BOTH audio and video.

18 A digital camcorder records ONLY video.

Question 1

Which of the following digital devices would you use to record a video?

Select the one best answer.

MP3 player

CD player

Camcorder

XboxQuestion 2

Which of the following statements are correct about a Webcam?

Select all answers that apply.

It is a digital camera.

It captures images and stores the images on a flash memory card.

It can either be connected to a computer or it can be wireless.

It transmits the images across the Internet.

Introduction To Digital AudioIntroduction To Digital Audio

Characteristics Of Digital Audio.Characteristics Of Digital Audio.

• It can be compressed• It can be edited• Can be streamed

• Wave (WAV): – developed for Microsoft Windows® 95 – Large size audio files

• MPEG Audio Layer 3 (MP3): – developed by Motion Picture Expert Group – compression of audio and video for digital

distribution. – smaller than WAV files.

• Windows Media® Audio (WMA): – developed by Microsoft for digital audio files.

Recording, CopyingRecording, Copying

• Recording and storing audio files in a digital format is called digital recording

• copying audio to a recordable CD or DVD is referred to as burning

• Audio can be stored in hard disk, CD, DVD, pen drive, portable player

• Requirements for recording:– Microphone– CD or DVD writer– Software

ConvertingConverting

• Conversion Software• Compression• Size• Player type: CD player, computer, portable player

Speech Technologies.Speech Technologies.

• Speech recognition allows you to communicate with a computer by using only your voice to enter text and to issue commands.

• microphone, a sound card, and speech recognition software

• interact with various programs

Create An Audio PieceCreate An Audio Piece

• Audio: (panchtantra: turtle and rabbit) • (other ideas: instrumental karaoke lallaby, carols,

pronunciation guide, bird calls)

• Choose a story. • Use voice recorder to record it / download from a

source • Import it into software for editing (Audacity)• Edit flaws like (pauses, umms, etc.) • Find music that represents the theme and mood of the

story• Store and share

SummarySummary

Statement True False

1 You CANNOT change the format of audio files.

2 You CAN change the format of some audio files.

3 MP3 format ALLOWS compression of audio files.

4 MP3 format DOES NOT ALLOW compression of audio files.

5 Compressed audio files DO NOT SAVE space.

6 Compressed audio files SAVE space.

7 You DO NOT NEED software to convert audio from a CD.

8 You NEED software to convert audio from a CD.

9 When converting audio, the audio file IS NEVER compressed.

10 When converting audio, the audio file MAY BE compressed.

11 When converting audio, the format is CHANGED.

12 When converting audio, the format is NOT CHANGED.

13 You DO NOT USE a CD or DVD writer to copy audio to a CD.

14 You USE a CD or a DVD writer to copy audio to a CD.

15 A DVD writer can copy audio to ONLY DVDs.

16 Most DVD writers can copy audio to CDs AND DVDs.

17 You NEED software to copy audio to CDs and DVDs.

18 You DO NOT NEED software to copy audio to CDs and DVDs.

Question 1

Which of the following is a characteristic of audio streaming?

Select all answers that apply.

It sends the audio file to your computer in a continuous stream.

It allows you to listen to digital audio without first downloading the entire file.

It allows you to transfer analog audio files.

It needs a browser plug-in or streaming audio player to play audio files.

Question 2

Which of the following are features of speech synthesis?

Select the one best answer.

It allows you to communicate with the computer by using your voice.

It essentially requires a microphone.

It allows your computer to convert text to audio.

It allows you to enter text in word-processing documents.

• Note: • For the next session, please bring your:

– Digital video camera with cable, software

Introduction To Digital VideoIntroduction To Digital Video

Characteristics Of Digital VideoCharacteristics Of Digital Video

• Recording by:– Analog video camera (tape / film)– Digital video camera (CD / DVD, Card, Disk)

• It can be compressed• Can be streamed• Watch directly on TV

Before digital video With digital video

Video cameras were large and heavy. Many video cameras are small enough to fit in your pocket.

Handheld cameras produced shaky video.

Image-stabilization technology steadies handheld video.

You had to carry separate video and still cameras.

Most digital video cameras can take still pictures, too.

Video shot indoors was tinted orange. Digital video cameras automatically adjust to different lighting.

Editing video required special training and was expensive.

You can edit videos with your home computer and software

Most home movies were long and boring.

Edited home movies are fast-paced and professional-looking.

To show a video to a friend, you had to ship him or her a tape.

You can e-mail videos to your friends, or burn your home movies to a CD or DVD.

Editing and Output FormatsEditing and Output Formats

• Editing– titles and background music– Cut or remove certain scenes– special effects– brightness, contrast, and color.– Subtitles / transcript

• Formats– .wmv– .mov– .mpeg– .vcd

Web Video Technologies.Web Video Technologies.

• Streaming: real-time, stored• Downloading• Web-conferencing

Create A VideoCreate A Video

• Video: (volcano / germination of seed) • Other ideas:

– http://kids.discovery.com/games/pompeii/pompeii.html

– concept: germination, volcano, earthquake, solar system, DNA

– visit to zoo pre-brief • Use camcorder to record it / download from a source• Import into software for editing (Windows Movie

Maker)• Edit pieces, cut unwanted portion, merge portions

from different videos • Add text, gestures, voice, props, pictures, music • Store and share

SummarySummary

• Benefits of video in classroom• develop greater critical literacy skills by

comparing television or movie segments with own creations

• view difficult, dangerous or expensive experiments or activities (recorded with specialists)

• assist in the introduction of disabled students into mainstream classes

• show skills that are quicker to learn by observation (e.g. sewing a French seam)

• record and analyze student or teacher presentations

Statement

1 Can be real-time or on-demand

2 Maintains a copy of video on your computer

3 Allows screen sharing

4 Sends video as a continuous stream

5 Allows voice communication

6 Refers to download of video from the Internet

7 Allows you to see and hear others in real time

Option 1 Option 2 Option 3

Video streaming Downloading video Web conferencing

Question 1

Which of the following statements are correct about nonlinear video editing?

Select all answers that apply.

You go directly to a frame to edit it.

You can edit DVDs in a nonlinear manner.

You sequentially traverse to a frame to edit it.

You can edit tapes in a nonlinear manner.Question 2

Which of the following statements are correct about video streaming?

Select all answers that apply.

The video file is received as a continuous stream.

Sometimes, a special program is needed on the computer to enable video streaming.

The quality of the video is not affected by the speed of the Internet connection.

It allows you to view video files over the Internet without first downloading them.

• Note: • For the next session, please bring your:

– Digital camera with cable, software

Digital CameraDigital Camera

• Benefits– Digital storage– Transfer to pc– Editing– Printing– Sharing on web– Watch directly on tv

Introduction To Digital PhotographyIntroduction To Digital Photography

Digital CameraDigital Camera

• Features– Resolution: Megapixel– lens : zoom– Lcd screen

Edit digital imagesEdit digital images

• transfer pictures to a computer • edit pictures • photo editing software • remove the red-eye • adjusting the brightness, contrast, or color• crop, resize, and print• adding special effects • change the backgrounds • add text

Manage digital imagesManage digital images

• manage your image library• sort and organize your picture collection• compressing and fine tuning pictures

• Formats• .jpeg• .gif• .png• .bmp

PrintersPrinters

• Consumer printers– Inkjet: liquid ink, paper– Laser: powder ink, paper– Photo: dye, photo paper

Create A CollageCreate A Collage

• Images: (volcano / germination of seed) • Use camera to record it / download from a source • Import into software for editing (MS Picture

manager)• Edit images, cut unwanted portion, • merge portions from different images • Add text, shapes, gestures • Store and share

• Other examples:• Science: process / stages eg germination,

volcano, solar system, water cycle, seasons effect, DNA

• Math: basic shapes around you, patterns in nature, parallel, angle, sphere

• English: characters in a chapter n their personality / facial expression & adjectives, do you see what I see, spot the not, visit to zoo pre-brief

• http://www.littleclickers.com/lcoil0610.html • pics4learning.com

SummarySummary

• Book: Instructional Media and Technology for Learning

Statement True False

1 A TRADITIONAL camera uses film to store a picture.

2 A DIGITAL camera uses a film to store pictures.

3 You CAN connect a digital camera to a computer.

4 You CANNOT connect a digital camera to a computer.

5 A FLASH MEMORY CARD creates the image of a picture.

6 A SENSOR creates the image of a picture.

7 You CANNOT change backgrounds using photo editing software.

8 You CAN change backgrounds using photo editing software.

9 You CANNOT crop a picture using photo editing software.

10 You CAN crop a picture using photo editing software.

11 You CAN edit pictures using photo management software.

12 You CANNOT edit pictures using photo management software.

13 Digital image 2006 IS NOT a photo editing software.

14 Digital Image 2006 IS a photo editing software.

15 PROFESSIONAL photo printers use special imaging devices.

16 PERSONAL photo printers use special imaging devices.

17 PERSONAL photo printers give near-photographic quality.

18 PROFESSIONAL photo printers gives near-photographic quality.

Question 1

Which of the following statements are correct about a digital camera?

Select all answers that apply.

It can be connected to a computer.

It uses a film to store pictures.

It allows you to see the picture immediately after you take it.

It focuses light on a film to create an image.

Question 2

Which of the following options are benefits of using a digital camera?

Select all answers that apply.

It allows you to print the pictures by using a digital photo printer.

It allows you to choose the pictures that you want to save and delete the rest.

It allows you to check the pictures without transferring them to a computer.

It allows you to transfer pictures from the film to a computer.