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