alternative lower cost hearing aid dec03-10 client: herb harmison advisor: edwin jones jr. team...
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Alternative Lower Alternative Lower Cost Hearing AidCost Hearing Aid
Dec03-10Dec03-10
ClientClient: Herb Harmison: Herb Harmison
AdvisorAdvisor: Edwin Jones Jr. : Edwin Jones Jr.
Team Members:Team Members:
Hassan Qureshi Hamdan Al-MehreziHassan Qureshi Hamdan Al-Mehrezi
Trong Do Nathan Veen Trong Do Nathan Veen
December 9, 2003December 9, 2003
Presentation OutlinePresentation Outline
Introductory materials:Introductory materials: Acknowledgement Acknowledgement Problem StatementProblem Statement Operating environmentOperating environment Intended User(s) and Use(s)Intended User(s) and Use(s) Assumptions and limitationsAssumptions and limitations End Product and other deliverablesEnd Product and other deliverables
Presentation Outline (cont.)Presentation Outline (cont.)
Project Activity DescriptionProject Activity Description Present AccomplishmentsPresent Accomplishments Future ActivitiesFuture Activities Approaches Considered and Used Approaches Considered and Used Project Definition ActivitiesProject Definition Activities Research ActivitiesResearch Activities Design ActivitiesDesign Activities Implementation ActivitiesImplementation Activities Testing and Modification ActivitiesTesting and Modification Activities Other Significant ActivitiesOther Significant Activities
Presentation Outline (cont.)Presentation Outline (cont.) Resources and Schedules Resources and Schedules
Resource RequirementResource Requirement Financial RequirementFinancial Requirement SchedulesSchedules
Closing MaterialsClosing Materials Project EvaluationProject Evaluation CommercializationCommercialization Recommendations for Additional WorkRecommendations for Additional Work Lessons LearnedLessons Learned Risk and Risk ManagementRisk and Risk Management Closing SummaryClosing Summary
AcknowledgmentAcknowledgment
Herb Harmison, the client for this senior Herb Harmison, the client for this senior design project, has contributed to this design project, has contributed to this project though technical advice and project though technical advice and general feedbackgeneral feedback
Edwin Jones Jr., the faculty adviser for this Edwin Jones Jr., the faculty adviser for this senior design project, has provided senior design project, has provided technical advise, solutions, and directiontechnical advise, solutions, and direction
Problem StatementProblem Statement Develop a hearing aid device that is:
Affordable Fashionable Effective in quality
General solution approach: Determine general functionality of the ear Determine general components of hearing aid Incorporate circuit into a fashionable unit Test the device for acceptability
Operating Environment
Perfect for inside use Could be sensitive to various outside noises Will work in dusty conditions, and in extreme
cold and hot climates Should be kept safe from rain Throwing or dropping the equipment could affect
its circuitry
Intended Users
Men and women of any age
People having noticeable hearing loss
Intended Uses
Daily conversation inside or outside
Watching movies at theater or television at home
Listening to a message or speech
AssumptionsAssumptions
Wired connections with the main unitWired connections with the main unit Stereo sound Stereo sound
Two microphones, two headphones, and two Two microphones, two headphones, and two amplifiersamplifiers
Volume control for each sideVolume control for each side No frequency controlNo frequency control
Limitations
Main unit should be light in weight (5 oz app.) Compact size (5 x 2 x 1 inches app.) Fashionable and easy to wear Stereo output Low cost (Less then $200) Greater battery life
End Product & Deliverables
Main unit which includes circuit, control and battery
Headphones and microphones attached to the unit by wires
User’s manual that will include product specifications, instructions and technical support information.
Present AccomplishmentsPresent AccomplishmentsProblem DefinedProblem DefinedResearched ears and hearingResearched ears and hearingResearched three main approachesResearched three main approaches
Build from scratchBuild from scratchPocketalker Pro from Williams SoundPocketalker Pro from Williams SoundTwo Cyber Ear Listening DevicesTwo Cyber Ear Listening Devices
Purchased Cyber Ear Listening DevicesPurchased Cyber Ear Listening DevicesTested partsTested partsConstructed CircuitConstructed CircuitEnd product testingEnd product testing
Future ActivitiesFuture Activities
Frequency response controlFrequency response control
Easier access to batteriesEasier access to batteries
Combining microphones and headphonesCombining microphones and headphones
Approaches ConsideredApproaches Considered
Build hearing aid device by buying each Build hearing aid device by buying each individual component and construct the circuitindividual component and construct the circuit
Purchase the Pocketalker Pro from Williams Purchase the Pocketalker Pro from Williams SoundSound
Purchase two Cyber Ear Listening Devices and Purchase two Cyber Ear Listening Devices and construct a fashionable boxconstruct a fashionable box
Approach UsedApproach Used
Cyber Ear Listening DevicesCyber Ear Listening Devices CheaperCheaper Good soundGood sound Size and weight limitations meetSize and weight limitations meet Allows fashionable design and reconstruction Allows fashionable design and reconstruction
of the circuit of the circuit
Project DefinitionProject Definition
Use Cyber Ear Listening Devices as the main Use Cyber Ear Listening Devices as the main circuit for amplificationcircuit for amplification
Rewire circuit to combine the devices for stereo Rewire circuit to combine the devices for stereo sound through one power sourcesound through one power source
Insert circuit into a fashionable boxInsert circuit into a fashionable box Develop a user manual Develop a user manual
Research ActivitiesResearch Activities
How hearing and hearing aids workHow hearing and hearing aids work
•Stereo Sound
Research Activities (cont.)Research Activities (cont.)
Build from scratchBuild from scratch AmplifiersAmplifiers HeadphonesHeadphones MicrophonesMicrophones BoxBox Power sourcePower source
Research Activities (cont.)Research Activities (cont.)
Pocketalker ProPocketalker Pro
Research Activities (cont.)Research Activities (cont.)
Cyber Ear Listening DevicesCyber Ear Listening Devices
Design ActivitiesDesign Activities
Original CircuitOriginal Circuit
Design Activities (cont.)Design Activities (cont.)
New CircuitNew Circuit
Implementation ActivitiesImplementation Activities
Power sourcePower source
One input (microphones)One input (microphones)
One output (headphones)One output (headphones)
Volume controlsVolume controls
Testing ActivitiesTesting Activities
Testing of Cyber EarTesting of Cyber Ear AmplificationAmplification ScenariosScenarios StereoStereo
Testing Activities (cont.)Testing Activities (cont.)
Testing Activities (cont.)Testing Activities (cont.)
Testing Activities (cont.)Testing Activities (cont.)
Testing of the new circuitTesting of the new circuit AmplificationAmplification Fashionable DesignFashionable Design Microphone placementMicrophone placement
Other Significant ActivitiesOther Significant Activities
Received some parts from JABRA Corporation Received some parts from JABRA Corporation Tested the parts Tested the parts Concluded parts unacceptableConcluded parts unacceptable
QualityQuality ComfortComfort
Project TasksProject Tasks
Task 1 Project Definition
Task 2 Technology Considerations
Task 3 End Product Design
Task 4 Prototype Implementation
Task 5 End-Product Testing
Task 6 End-Product Documentation
Task 7 End-Product Demonstration
Task 8 Project Reporting
Resources Requirements: Resources Requirements:
Personnel effortPersonnel effort
0
5
10
15
20
25
Hours
1 2 3 4 5 6 7 8
Task #
Personnel effort
Qureshi, Hassan
Veen, Nathan
Do Trong
AL-Mehrazi, Hamdan
Financial RequirementsFinancial Requirements
Item Cost
Printing of Project Poster $50.00
Cyber Ear (2) $40.00
Hearing aid case $2.69
Volume control (2) $5.98
Battery Holder $0.99
Soldering Lead $3.49
Carrying case with belt clip $9.99
Totals $113.14
Financial RequirementsFinancial Requirements
Financial requirments
$0.99$5.98
$2.69
$40.00
$3.49
$50.00
$9.99
Printing of ProjectPoster
Cyber Ear (2)
Hearing aid case
Volume control (2)
Battery Holder
Soldering Lead
Carrying case with beltclip
Other Resources (Labor)Other Resources (Labor)Assuming labors cost $11.0/hAssuming labors cost $11.0/h
QURESHI HASSAN JAVED $1,254.00
VEEN NATHAN CORY $1,265.00
DO TRONG HA $1,177.00
HAMDAN A K A AL-MEHREZI $1,254.00
Subtotal $4,950.00
Total cost (Labor & Parts) $5,063.14
First Semester Schedule First Semester Schedule
Second Semester ScheduleSecond Semester Schedule
Project evaluationProject evaluation
MilestoneMilestone Project definition (fully met)Project definition (fully met) Technology considerations and selection Technology considerations and selection
(fully met)(fully met) End-product design (partially met)End-product design (partially met) End-product testing (fully met)End-product testing (fully met) End-product documentation (fully met) End-product documentation (fully met) End-product demonstration (partially met)End-product demonstration (partially met) Project reporting (fully met)Project reporting (fully met)
CommercializationCommercialization
Cost to produce the productCost to produce the product Labor and components boughtLabor and components bought
Street selling priceStreet selling price Hard to say, need to have an evaluation and Hard to say, need to have an evaluation and
more efficient designmore efficient design Around $170Around $170
Potential market for the productPotential market for the product Any consumer with a considerable hearing Any consumer with a considerable hearing
loss looking for an affordable solutionloss looking for an affordable solution
Recommendations for Recommendations for Additional WorkAdditional Work
A commercialized version of the productA commercialized version of the product Compare the price and the quality with present Compare the price and the quality with present
designdesign An enhanced prototype version of the productAn enhanced prototype version of the product
Increase the gain of the output from 50 dB to 140 Increase the gain of the output from 50 dB to 140 dBdB
Stabilize the circuit by designing a new circuit boardStabilize the circuit by designing a new circuit board New caseNew case Add frequency response controlAdd frequency response control
Lessons LearnedLessons Learned
Meeting time, Communication between groupMeeting time, Communication between group Discussion and processDiscussion and process Gain the knowledge of the electronic circuitGain the knowledge of the electronic circuit Know how to find the necessary components to Know how to find the necessary components to
fulfill the requirement fulfill the requirement Need to spend more time to do research and Need to spend more time to do research and
discussion discussion
Risk and Risk ManagementRisk and Risk Management
Need to know the level of hearing impairNeed to know the level of hearing impair Read instruction to understand how the device Read instruction to understand how the device
works before usingworks before using Loss of a team memberLoss of a team member Defective deviceDefective device
Closing SummaryClosing Summary Hearing aid and its importanceHearing aid and its importance
EffectiveEffective Low costLow cost
ApproachApproach Successful Successful UsableUsable