Real-Time Embedded Cellular Automata Audio Synthesis
Viznut made one-line C programs on his laptop that generate entire 8-bit musical works: http://countercomplex.blogspot.com/2011/10/algorithmic-symphonies-from-one-line-of.html.
The proposed project intends to generalize this work, making one-line (low instruction count) cellular automata with direct pipe to an audio codec on a low-cost device such as an Arduino.
The algorithms are very efficient and will run in real-time on the Arduino (using the PWM output pins to simulate a DAC). This yields embedded CA audio synthesis, essentially a low cost audio synthesis engine ⇐$25.
The base real-time synthesis Arduino code is here http://bregman.dartmouth.edu/~mcasey/oneLineMelodyStandalone.zip (pin 11 is the signal, connect this to one terminal on a speaker, and the other terminal to common ground).
For an additional $19 the output can be made high quality 16-bit stereo audio. See https://github.com/soundspotter/ArduinoUNO_AudioCodecMikroe506
Total cost for 44.1kHz stereo audio synthesis ⇐$44 US.
Mike C. (email@example.com)