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Noise-Controlled Hearing Device for Enhanced Auditory Training Compliance

Our innovative device adapts to user's headphones, incorporates internal and external microphones, and calculates real-time controlled noise levels to improve auditory training compliance. With a smartphone interface and USB connectors, it offers a tailored experience in a controlled environment. Join us in revolutionizing auditory training compliance!

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Noise-Controlled Hearing Device for Enhanced Auditory Training Compliance

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  1. Portable Controlled-Noise Environment Amanda Spencer, Jenny Liu, Jennifer Wang Team 34 Final

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

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

  4. 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

  5. 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

  6. 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

  7. 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

  8. 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

  9. 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

  10. 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

  11. Mechanical • Bent rod • Splitter • USB connecter • Dual Lock adhesive

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

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

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

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

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

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

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

  19. Mechanical - Analysis • Calculations

  20. Mechanical - Analysis • Calculations

  21. Mechanical - Analysis • Calculations

  22. Mechanical - Analysis • Calculations • Necessary diameter: 3.26 mm

  23. 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

  24. 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 (30U1-02400) • $.92 ea, 3 day lead time ($ 12.20)

  25. 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

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

  27. Mechanical - Manufacturing Unit Cost: $85.68

  28. Electrical • Internal microphone • External microphone • A-weighted filter • Batteries

  29. Electrical - Analysis • A-weighted filter

  30. Electrical - Analysis • A-weighted filter

  31. Electrical - Analysis • Internal Microphone • MP34DT01TR surface-mounting MEMS microphone • External Microphone • CME-1538-100LB electret microphone

  32. 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

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

  34. Electrical - Details • Internal Microphone • MP34DT01TR MEMS Microphone • 4mm x 3mm x 1.1mm • 20Hz-20kHz • Digi-Key (497-12016-1-ND) • External Microphone • CME-1538-100LBElectret Condenser Microphone • 4mm d, 2.9mm h • 20Hz-20kHz • Digi-Key(102-2190-ND)

  35. Electrical - Details • PCB Board

  36. Electrical - Manufacturing Total Unit Cost: $77.26 + $85.68 = $162.94

  37. Weight Unit Weight: 94 g • Head Weight: 31 g

  38. Software - Analysis • Run Time • Sound player: 26.85 ms • Loading sound file and preparing to play it • CPU Requirements • 22% CPU usage • Timing

  39. Software - Details • Algorithm/ Flow Diagram

  40. Software - Details • Software Package • Target Version: Android 4.1.2 (API 16) • Lowest Version: Android 2.2 (API 8) • Hardware Requirements: • Sound Card • Audio Jack • USB jack

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

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

  43. Conclusion • Problem Analysis

  44. Conclusion • Problem Analysis • Ethical Considerations

  45. Conclusion • Problem Analysis • Ethical Considerations

  46. Conclusion • Problem Analysis • Ethical Considerations

  47. Conclusion • Intellectual Property • Future Directions

  48. Questions?

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