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sensors for new musical instruments

sensors for new musical instruments. Roberto Aimi. typical controller system. sensors acquisition system (Icube, PIC, Basic Stamp) mapping software (Max, PD, ?) output(?). useful resources. Fraden, a handbook of modern sensors MSI piezo manual acroname.com, infusion systems ($$$!!!!)

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sensors for new musical instruments

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  1. sensors for new musical instruments • Roberto Aimi

  2. typical controller system • sensors • acquisition system (Icube, PIC, Basic Stamp) • mapping software (Max, PD, ?) • output(?)

  3. useful resources • Fraden, a handbook of modern sensors • MSI piezo manual • acroname.com, infusion systems ($$$!!!!) • Datasheets!

  4. other favorite resources • Digi key • American science and surplus • smallparts.com • Mcmaster-Carr / MSC industrial catalogs

  5. what to sense? • position, velocity, acceleration, rotation • temperature, light, sound • pressure, torque, bending • ON/OFF • ?

  6. Switches • discrete output • toggle, normally on, off • can provide visual and tactile feedback

  7. The hands -- Michel Waisvisz 1984 - present

  8. Roland TR-808

  9. Potentiometers • common types: linear taper, audio taper (log) • rotary, linear, multiturn +Vref Vout GND

  10. Variable resistors R1 Variable resistor V output R2 Vout = Vref R2/(R1+R2)

  11. Bend Sensor

  12. FSR • resistance drops when pressed

  13. accelerometers • inclination, acceleration

  14. Rate Gyros • Analog devices ADXRS410 or similar • voltage output proportional to angular velocity

  15. IR distance sensors Sharp GP2D12(AKA the toilet sensor) http://www.acroname.com/robotics/parts/R48-IR12.html

  16. Qprox capacitive sensing QT301 circuit

  17. PWM to Analog http://www.tigoe.net/pcomp/analogout.shtml

  18. Devantech SRF04 Ranger(acroname.com) • pulse length proportional to distance

  19. Hall effectMagnetic field sensors Allegro 1321 linear amplifier in chip!

  20. Piezoelectric materials • PZT • PVDF excellent drum triggers, contact microphones

  21. Musical controllers derived from pianos, organs

  22. Perception-Production loop

  23. Roland V-drums

  24. Drum triggers

  25. Korg Wavedrum (Physical Modeling)

  26. Typical percussion controller

  27. Simplified convolution instrument

  28. but not too simple...

  29. Simple example

  30. simple drum pad

  31. Some initial results

  32. prototypes

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