!-

This patch demonstrates a couple of very simple sorts of transformations that could be imposed on incoming MIDI pitch values before sending them on to a synthesizer. One is transposition, achieved by adding a certain number of semitones to the MIDI pitch value (and sending it out with the same velocity values as were in the incoming note messages).

For this example to work properly, you will also need to download the small image file gourmet.jpg.

This patch demonstrates a way to generate random numbers within a specified range.

To invert a musical phrase around a particular axis of symmetry, multiply the axis pitch by 2, then subtract the played pitches from that. For example to invert all pitches around the axis of middle C (MIDI key 60), you would subtract the pitches from 120.

This example demonstrates creating a RAM buffer to hold a 10-second stereo recording, recording live audio into it (with input volume adjustment), and then playing randomly chosen backward clips of that sound, with a trapezoidal window to taper the beginning and ending of each clip to avoid clicks.