Amanda Spencer, Jenny Liu, Jennifer Wang Team 34 Final

Need 12.5 million people have hearing devices in U.S. Standard auditory training compliance very low Improve compliance with new format

Design Requirements Interfaces with Android smartphone Permeating noise calculated in real time Environment with controlled SNR

Chosen Design Adapt to user’s headphones External microphone Internal microphone Bent rod attachment Smartphone interface Splitter  headphones and external microphone USB connecter  internal microphone

Chosen Design Adapt to user’s headphones External microphone Internal microphone Bent rod attachment Smartphone interface Splitter  headphones and external microphone USB connecter  internal microphone

Chosen Design Adapt to user’s headphones External microphone Internal microphone Bent rod attachment Smartphone interface Splitter  headphones and external microphone USB connecter  internal microphone

Chosen Design Adapt to user’s headphones External microphone Internal microphone Bent rod attachment Smartphone interface Splitter  headphones and external microphone USB connecter  internal microphone

Chosen Design Adapt to user’s headphones External microphone Internal microphone Bent rod attachment Smartphone interface Splitter  headphones and external microphone USB connecter  internal microphone

Chosen Design Adapt to user’s headphones External microphone Internal microphone Bent rod attachment Smartphone interface Splitter  headphones and external microphone USB connecter  internal microphone

Chosen Design Adapt to user’s headphones External microphone Internal microphone Bent rod attachment Smartphone interface Splitter  headphones and external microphone USB connecter  internal microphone

Mechanical Bent rod Splitter USB connecter Dual Lock adhesive

Mechanical - Analysis Bent Rod Requirements Rigid Springs back to original shape Thin

Mechanical - Analysis Bent Rod Requirements Rigid Springs back to original shape Thin

Mechanical - Analysis Bent Rod Requirements Rigid Springs back to original shape Thin

Mechanical - Analysis Bent Rod Requirements Rigid Springs back to original shape Thin Wires secured to frame

Mechanical - Analysis Bent Rod Requirements Rigid Springs back to original shape Thin Wires secured to frame

Mechanical - Analysis Bent Rod Requirements Rigid Springs back to original shape Thin Wires secured to frame Hypoallergenic

Mechanical - Analysis Core Type 304 Stainless Steel Covering polyolefin heat shrinkable tubing

Mechanical - Analysis Calculations

Mechanical - Analysis Calculations

Mechanical - Analysis Calculations

Mechanical - Analysis Calculations Necessary diameter: 3.26 mm

Mechanical - Details Core Type 304 Stainless Steel Rod 4 mm diameter, 1 m length McMaster-Carr (1272T13) $6.45 ea, 1 day lead time Covering Flexible Polyolefin Heat-Shrink Tubing 1/8” diameter after shrinking, 4 ft long McMaster-Carr (7856K151) $2.81 ea, 1 day lead time

Mechanical - Details USB connector USB Microphone Planet Headset(USB mic 1) $59 ea, 3 day lead time ($12.95) Female-Female USB Coupler Cable Wholesale (30U ) $.92 ea, 3 day lead time ($ 12.20)

Mechanical - Details Splitter 3.5mm Headset Splitter Adapter 20 cm length, 9 g weight StarTech.com (MUYHSMFF) $10.99 ea, 2 day lead time ($21.06) Dual Lock Indoor-Outdoor Dual Lock 1” wide 3M (SJ3870) $12.47/yd

Mechanical - Manufacturing Rod Bending ~10 minutes per frame $52/hour

Mechanical - Manufacturing PartQty.Unit Price SubtotalShippingTotal Rod12$6.45$77.40$0$77.40 Covering9$2.81$25.29$0$25.29 Splitter100$10.99$1099$21.06$ Adapter100$59$5900$12.95$ USB Mic100$.92$92$12.20$ Dual Lock9 yrds$12.47$112.23$0$ Box100$3.49$349$0$349 Processing16.67 hrs$52$ $ Total$ Unit Cost: $85.68

Electrical Internal microphone External microphone A-weighted filter Batteries

Electrical - Analysis A-weighted filter

Electrical - Analysis A-weighted filter

Electrical - Analysis Internal Microphone MP34DT01TR surface-mounting MEMS microphone External Microphone CME LB electret microphone

Electrical - Analysis Electret Sensitivity: -38  3 dB Maximum sound: N/A MEMS Sensitivity: -26  3 dB Maximum sound: 120 dB SPL 94 dB SPL 97 dB peak 120 dB peak

Electrical - Analysis Power Considerations Duracell 3 V 180 MAH coin battery

Electrical - Details Internal Microphone MP34DT01TR MEMS Microphone 4mm x 3mm x 1.1mm 20Hz-20kHz Digi-Key ( ND) External Microphone CME LB Electret Condenser Microphone 4mm d, 2.9mm h 20Hz-20kHz Digi-Key( ND)

Electrical - Details PCB Board

Electrical - Manufacturing Part PriceUnit PriceLead Time Printing$2034$ days Assembly$3362$ days Components$1244$ weeks Op Amp$463.36$4.633 days Electret mic$284$2.843 days MEMS mic$300$3.003 days Shipping$38.14$ Total$ $ Total Unit Cost: $ $85.68 = $162.94

Weight PartAmt.Wt./Amt.Weight Rod1.28 cc8.03 g/cc10.25 g Covering1.16 cc.9 g/cc1.04 g Splitter g Adapter g USB Mic g Box g Dual Lock3 in 2.9 g/in g Board g Unit Weight: 94 g Head Weight: 31 g

Software - Analysis Run Time Sound player: ms Loading sound file and preparing to play it CPU Requirements 22% CPU usage Timing

Software - Details Algorithm/ Flow Diagram

Software - Details Software Package Target Version: Android (API 16) Lowest Version: Android 2.2 (API 8) Hardware Requirements: Sound Card Audio Jack USB jack

Software - Demonstration SNR = 24 dB SNR = 1 dB #4 #3 #2 #1

Safety Analysis High Risk Sound levels exceeding 130 dB Electrical exposure to water Moderate Risk Injury due to sharp edges Allergic reaction to rod

Conclusion Problem Analysis

Conclusion Problem Analysis Ethical Considerations

Conclusion Problem Analysis Ethical Considerations

Conclusion Problem Analysis Ethical Considerations

Conclusion Intellectual Property Future Directions

Questions?