cmd_synth

reverse polish notation synth. takes synth descriptions on stdin, and writes a wav to stdout.

compiling:

it's just one c file.

gcc main.c -o synth

example usage:

this will play an A note for 1 second, and output a wav file:

echo "440 sin" | synth 1 > out.wav

to display all of the commands available:

synth --help

playing a sound (OSX):

echo "440 sin" | synth 1 > tmp.wav && afplay tmp.wav

example inputs

A440:

440 sin

middle C (9 half-steps down from A440):

440 -9 exp mul sin

A440 with vibrato (20 Hz oscilation between 400 and 480 Hz):

440 40 20 sin mul add sin

vibrato as a function:

[ sin mul add sin ] @vibrato
440 40 20 vibrato