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Sensors for new musical instruments Roberto Aimi.

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Presentation on theme: "Sensors for new musical instruments Roberto Aimi."— Presentation transcript:

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 +V ref GND V out

10 Variable resistors V output Variable resistor R2 R1 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

16

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

18 Qprox capacitive sensing QT301 circuit

19 PWM to Analog http://www.tigoe.net/pcomp/analogout.shtmlwww.tigoe.net

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

21 Hall effect Magnetic field sensors Allegro 1321 linear amplifier in chip!

22 Piezoelectric materials PZT PVDF excellent drum triggers, contact microphones

23 Musical controllers derived from pianos, organs

24 Perception- Production loop

25 Roland V-drums

26 Drum triggers

27 Korg Wavedrum (Physical Modeling)

28 Typical percussion controller

29 Simplified convolution instrument

30 but not too simple...

31 Simple example

32 simple drum pad

33 Some initial results

34 prototypes


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