headphones presentation
TRANSCRIPT
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Wireless Headphones
The Art and Science of Engineering Design
Kaitlin Halady
Shilpa Sarkar
Carolina Jaramillo Romn
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What is the problem?
Todays headphones arent giving users
a 100% enjoyable, perfect music
experience
Wireless headphones are too expensive
for the average college student
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What will solve the problem?
Reasonably priced
High quality
Comfortable
Give consumer unrestricted
range of motionWater-resistant
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Why wireless?
Problems with wire
Knots and tangles
Limits range of motion
Potential safety hazard
Constant re-adjustment
Reasoning
Direction of market
Competitors
Latest products
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The Survey: General Info
100% use
headphones
89 students at Stanford University
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The Survey: Brands
* Other brands: Panasonic, Sennheiser, Audio Technica, Samsung, Creative, Grado,Beyerdynamic, Etymotic, Koss, Uknown, Skull candy, V-moda, JVC-Gummy)
50%
17%
6%
4%
3%
20%
Apple
Sony
Bose
Philips
Sure
*Other brands
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The Survey: Type of Headphone
Types of Wired Headphones
0 20 40 60 80
Non-earbudsEarbuds
Did not say
7%
7%86%86%
Wireless
Did not respondWired
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The Survey: Headphone UsageWork out
Listen to music
Study/read
Biking
Transport(on plane,walk)
Sleeping
Watch movie
Other
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The Survey: Hours of use per day
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Survey: Important Factors
Most
Important
Important Less
Important
Least
Important
Price 33.7 % 25.8 % 27 % 13.5 %
Comfort 40.4 % 28.1 % 25.8 % 5.6 %
Style 5.6 % 7.9% 24.7 % 61.8%
Sound
quality
20.2 % 38.2% 22.5 % 19.1 %
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The Survey: Have your headphones everfelt uncomfortable?
Are headphones...
24%
76%
Comfortable
Uncomfortable
0
10
20
30
40
50
60
70
80
%
Shape
Fall out/ Headache
Wire
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If a pair of $60 to $80 wireless ear buds was onthe market, would you purchase them?
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
No
Yes
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Objective Tree
Objective Tree
Shape Wireless
Comfort
Compatibilitywith M ac Durable Water Resistant
Versatility
Container
Portable
Colors
Style
$60 - $80(mid-range)
Price
Marketability
Wireless Headphones
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Detailed Design
Inner-ear bud
Adjustable over-ear piece
User InterfaceCharger/Adapter
Materials
ColorsRetail
Scheduling
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The Headphones
Left headphone:
100 mAh battery, four hours playing time
Charging plug
Lights to signal power and bluetooth signal
Right headphone:
Circuit board
Bluetooth chip/antenna
Controls for the two wheels (track and volumechanging/power)
Switches, capacitors, resisters, and other technicalcomponents that make headphones possible
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Canalphones
Directly into the ear canal Natural seal
Traditional type Sleeves
foam
QuickTime and a
TIFF (Uncompressed) decompressorare needed to see this picture.
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Adjustable Behind-ear piece
Rigid backbone
Adjust vertically to fit different size ears
Rotate up to a 90 degree angle from earbud for
maximum comfort
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User Interface
Wheels (Right)
Volume
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Materials
Plastic
Paint
Foam
Plastidip
Soft elastomer
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Colors
Pink
Blue
Black
White
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Technical Components
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The Charger
Portable
1000 mAh battery ( ~ 15 hours hours of playback time)
Plug to charge headphones in case
USB port on the outside with a wire that plugs in to anelectrical outlet
When plugged into a wall it is a standard charger
When unplugged it is a compact carrying case that cansupply power to the headphones
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The Adapter
Takes the analog signalfrom the iPod and convertsit to digital so it can be sentwirelessly to the users
headphones
Plugs into the iPod
Bluetooth chip in a circuitboard
Runs off of the iPodbattery.
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Morph ChartMeans 1 2 3 4
Feature/function
Transmit music wirelessly Bluetooth RF transmitter (FM) Infrared transmitter
(WiFi)
Compatibility One brand of mp3
player
Multiple brands
Shape Earbuds Earbuds with over-ear
piece
Canalphones (in-
ear)
Supra-aural
headphones
Material of headphone Silicone rubber Elastomate Foam
Water resistance material Plastidip Polypropylene Mylar
Power for headphones Charger (plugs
into outlet)
Container with charger Docking Station
User interface Buttons onheadphones
Be controlled by mp3player
Mix: some buttonson headphones,
others mp3
Battery Goes in both
headphones
Goes in one
headphone
Storage Carrying case Charging carrying
case
Magnetized
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Alternative Designs
Connecting Wire
Aural Headphones vs. Earbud
Compatibility
User Interface Placement/Type
Over-the-ear Piece
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Budget
(Headphones + Adaptor + Charger)= $17.50
17.50 x 3.5 = ~ $61.25
17.50 x 4 = ~ $70.00
Retail price somewhere between $60 and $70
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Piece Estimated Cost (Dollars)
Headphone
Battery (100 mAh) ~ .50
Bluetooth (includes digital-to-analog converter) 4.00
Material (Foam, Plastic, TPE) 1.00
Packaging .75
Chip to charge battery 1.00
Other components (switches, LEDs, resisters,
capacitors, etc.)
1.75
Plasti-Dip ~ . 50Charger-case
Plastics 1.00
AC power adapter 1.50
Adapter
Plastic Casing .50
Bluetooth 4.00
Circuit Board/Electronics 1.00
TOTAL 17.50
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Retail
X 4, X 3.5
SellingShipping
Middlemen
Store
Online
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Scheduling
(for hypothetical release of product)
0 wks - Design start
+ 4 wks - Industrial Design
+ 4 wks - Mechanical Design
+ 6 wks - Tooling design and fabrication
Less than 12 wks for electrical design, so this is notcritical path to this point.
= 14 weeks, 1st milestone - First prototype + 8 weeks to get from first to final prototypes
+ 4 weeks to get FCC certification
= 26 weeks, then mass production would start
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The Competition: Jaybird JB-100
Released Fall 2007
Online Market
$180.00 (with adapter)
Cons
High Price
No User Interface
Wire between headphones
Volume too low/No bass
Only available online
Doesnt fit all ear sizes
Pros
In-ear Bluetooth headset
Noise cancelingWater/sweat resistant
Comes with charging dockand mesh case
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The Competition: Sennheiser MXW1
Release May 2008
In Store Market
$599.00
Pros
Twist and Fit System
Kleer Technology
Higher Battery LifeReceived Editors Choice Award
in 2008 at Consumer ElectronicTradeshow
Cons
High Price
New technology
No current customer reviews
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What will the future bring?
Market movement to wireless
Evolving design
Compatibility
New technology (Kleer)
Cheaper costs for technical components