🖲️ Trackball mouse interface

[freealise]

Would suggest to use a large foot-operated trackball mouse along with the pedal - this would let you control the sound in up to 3 dimensions (like volume, pitch and note length), almost like a violin bow or voice.

[freealise]

It would obviously require a compressor/sustainer - maybe this one taken out of the Chromium browser: https://github.com/velipso/sndfilter/blob/master/src%2Fcompressor.c

UPD: looks like it doesn't do upwards compression though - which can be fixed

...Actually since the bitrate doesn't matter with floating point numbers, downwards compression with makeup gain should be ok.

https://github.com/FFmpeg/FFmpeg/blob/master/libavfilter%2Faf_sidechaincompress.c
ffmpeg has it (as well as other good things to pull apart)

https://github.com/freealise/bilberry-jam/blob/main/sus.h
...Made an elementary sustainer with blending, dynamics compensation and noise threshold - to be continued.

[freealise]

Made a bitcrusher with variable bit & sample rate and noise reduction by moving average (and odd power function), to go with realtime mouse input.
https://github.com/freealise/bilberry-jam/blob/main/bit.h