stuartl/atinysynth
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Stuart Longland f982e0c31f
attiny861: Bump amplitude up. 
Since the number of notes possible with this device is small… in fact,
it seems to only want to do monophonics, not sure why, we can bump the
amplitude up a bit more without risk of saturation.
2017-05-28 11:08:18 +10:00
ports attiny861: Bump amplitude up. 2017-05-28 11:08:18 +10:00
.gitignore gensine: Add in sine wave generator. 2017-04-25 17:43:51 +10:00
adsr.c adsr: Fix "infinite" delay/sustain. 2017-05-28 10:33:52 +10:00
adsr.h adsr: Support "infinite" delay and sustain. 2017-05-27 15:19:40 +10:00
debug.h debug.h: Add debug helper 2017-04-08 20:26:45 +10:00
gensine.py gensine: Add in sine wave generator. 2017-04-25 17:43:51 +10:00
LICENSE ADSR-based synthesizer for microcontrollers 2017-04-08 18:57:37 +10:00
Makefile Makefile: Make object list configurable. 2017-05-01 17:36:56 +10:00
README.md ADSR-based synthesizer for microcontrollers 2017-04-08 18:57:37 +10:00
synth.h synth: Make enable/mute bits volatile. 2017-04-09 10:17:09 +10:00
voice.h voice: Add test for voice channel done. 2017-04-09 10:07:10 +10:00
waveform.c waveform: Fix logic errors in triangle synthesis 2017-04-09 07:26:16 +10:00
waveform.h waveform: Increase step to 16-bits. 2017-04-09 07:19:04 +10:00

README.md

ADSR-based Polyphonic Synthesizer

This project is intended to be a polyphonic synthesizer for use in embedded microcontrollers. It features multi-voice synthesis for multiple channels.

The synthesis is inspired from the highly regarded MOS Technologies 6581 "SID" chip, which supported up to 3 voices each producing either a square wave, triangle wave or sawtooth wave output and hardware attack/decay/sustain/release envelope generation.

This tries to achieve the same thing in software.

Code is presently a work-in-progress.