1. Rhythmic Auditory Stimulation System Gerard Duff 17 th of April 2008

2. Today's agenda Project Spec Research Initial Planning MP3 Player Stride Rate Project Summary Questions

3. Project Spec Music Therapy is used in neurologic rehabilitation. Studies have shown that the effects of RAS on Parkinson's disease, improves stride length and stride-to-stride variability Design a pc based music system that will play back music in rhythm to the users ideal stride frequency.

4. Research Audio files Find a song with a suitable tempo Hard to find songs Nice to listen to Synthesized music Make up song Easy to change tempo Hard to find nice songs

5. Initial Planning Accelerometer: Used to detect leg movements HyperTerminal: Accelerometer used Bluetooth to connect with pc and send raw data to it. Mp3 Player: User input stride rate and audio file speed was adjusted to match the stride rate. Matlab: Interfaced with HyperTerminal, received raw data values and calculated the stride rate

6. Main Program Chose a programming language Three main functions –Find Stride Rate –MP3 player –Metronome player

7. MP3 Player Designing GUI –Ease of use –Display key information Basic MP3 player capabilities –Add songs –Play, stop, skip Help Function

8. Original Tempo Matlab code –Too many samples required Mixmeister –Updates id3 tag –Fast

9. Changing Tempo Media rate Can change speed sufficiently without affecting pitch

10. Metronome Provide a metronome function for testing Time constraints on project Gmans guitar metronome

11. Stride Rate communicated with the pc via bluetooth Interfaced using a HyperTerminal

12. Calibrating Accelerometer y and z axis were deactivated 3.6 g was a sufficient threshold

13. Using Matlab Fopen,fprintf, fscanf MatLab.Execute(“.”)

14. Project Summary Overall I completed –mp3 player –metronome –Started accelerometer Developed a system from scratch using a new language Future work…

15. Thanks

16. Demonstration

17. Questions?

18. Thanks