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Rhythmic Auditory Stimulation System

Rhythmic Auditory Stimulation System

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Rhythmic Auditory Stimulation System

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Presentation Transcript

  1. Rhythmic Auditory Stimulation System Gerard Duff 17th 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. 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 Research

  5. 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 Initial Planning

  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