1. Using Voice to Solve Ergonomic Problems Dr. William Lenharth, CHFP UNH – Project54

2. When to use Voice? A high level of visual activity is present. When hands are busy with critical tasks. If speeds match …commands - activity

3. Problems with Voice Training Accuracy Noise environment Required hardware

4. Solutions - Hardware Hardware: Microphone types - Environment driven: - Noise Cancelling - Headset - Throat

5. Project54 Mobile Platform

6. Hardware Connectivity

7. Solution - Accuracy How to improve accuracy? - Voice engines use a statistical approach. - Limit correct answers by changing grammar e.g.: If the question is, Sex? Limit grammar to “male” or “female”. Grammar is a text file easy to change.

8. Sample Grammar [ ] = front antenna "FRONT ANTENNA" = front antenna off "FRONT ANTENNA OFF" = rear antenna "REAR ANTENNA" = rear antenna off "REAR ANTENNA OFF" = radar "RADAR" = lock "LOCK" = lock off "LOCK OFF"

9. SOFTWARE ARCHITECTURE

10. Solution - Training Voice systems: Speaker Dependent or independent. Voice based allows 20% variation max. Systems can be trained with a file to help improve accuracy.

11. System - Control Push to Talk : Controls when the voice is being processed by the computer. Continuous speech such as dictation.

12. Project54 Nine years experience 1200+ vehicles in use daily Nationwide Inexperienced users - over 60,000 voice samples collected.

13. Project54 – Voice System Speaker Independent Push-to-talk controlled Grammars changed “on the fly” 96% accuracy using free speech engine Noise cancelling microphone

14. How build your Application Use Project54 base software to handle speech and process control. Build your own application using P54 GUI and SUI support. Connect your control computer to your device via the P54 CAN2B bus and interconnect devices (or other). Deploy system and test …

15. Further Information WWW.project54.unh.edu whl@sr.unh.edu 15