1. Read My Lips Voice Recognition Hardware Development

2. Voice Input Element Requirements –Low cost microphones –Integrated into existing AIS panels –Removes noise created by panels –Improved performance over off the shelf competitors

3. Design Concept Signal Subtraction to create a highly directional microphone. Omni DirectionalUni-DirectionalResult

4. Selected Hardware Panasonic Microphones –Omni Directional WM-64PN –Unidirectional WM-55A103 Op Amp –TL082 Low Noise Operational Amplifier

5. Detailed Schematic

6. Testing Tune Microphones –Balance omni and uni directional microphones Waveform Analysis –Acquire waveforms to confirm cancellation Translation Analysis –Confirm speech to text translation accuracy Unit Placement –Upper and lower mounting options

7. Testing - Tuning Microphones must be balanced –Completed by adjusting resistance values

8. Testing - Waveforms Confirmation of cancellation

9. Testing - Translation Translation of a predefined script

10. Testing - Translation Translation accuracy in various scenarios

11. Testing - Translation Our solution vs. competitor

12. Testing - Mounting Performance will vary depending on mounting locations Top center of panel was chosen as best location

13. Future Work High Frequency Analysis –Better cancellation at higher frequencies Power Regulation –Stabilization of DC power supply Increased Directionality –For improved performance Phase analysis –Both within the circuit and the sounds arrival