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MIDI Values

A project log for Digibone

A digital instrument with all the flare of a trombone, with the power and flexibility of an MIDI instrument

Craig HissettCraig Hissett 03/23/2018 at 00:480 Comments

This is the middle Range of the scale, and octaves can be achieved by adding or subtracting 12; C3 would be 48, and C5 would be 72.

I have used the MIDI Values to map out what notes an actual trombone can play on its positions. This way the final product will be very playable for trombone players.

Pitching closed 2nd 3rd 4th 5th 6th 7th
9:  74 73 72 71 70 69 68
8: Top Bb 70 69 68 67 66 65 64
7: Ab 68 67 66 65 64 63 62
6: F 65 64 63 62 61 60 59
5:G 62 61 60 59 58 57 56
4: Middle 58 57 56 55 54 53 52
3: F 53 52 51 50 49 48 47
2: Bb 46 45 46 44 43 42 41
1: Pedal 34 33 32 31 30 29 28

For the final Slide mechanism I will take a total of whatever potentiometer/s values and divide it by 7 to determine the slide position and the pitching value (controlled by the PitchUp/PitchDown buttons) to then play the correct value.

The arduino code will all be triggered by either a momentary button or an air sensor to trigger playback; while the play button is pressed the arduino will then pass the serial data to the Pi.

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