hclarke / cmd_synth Goto Github PK

right now, everything has the same duration. would be nice to support things like concatenation and crossfading

this would require:

• input time means "sustain time" instead of "total duration"
• handling caching differently (or removing it)
• deal with infinite vs finite length clips
• deal with different start times

a command to just pop the top of the stack would help with debugging

for debugging, would be nice to have a function to print each item on the stack to stderr

first arg should be duration, as it is now. additional args should be treated as commands run before the program starts

example: synth 1 440 sin, with an empty stdin, should produce a 1 second sound with a 440 hz sin wave

square, triangle, sawtooth waves

would be nice: triangle wave with a skew/bias parameter to cover sawtooth, triangle, reverse sawtooth, and everything else like that

they could be aliases for constants.
similar to 440 @A

or they could be a one-argument function that takes the octave
like ```[ 12 mul exp 440 mul ] @A

leaning toward the latter

should be able to save the top of the stack to a variable, and use it later

store: @foo

load: foo

the command line args should represent what piano key was hit and for how long

eg. synth 1 220 or synth 1 -1 A

or prettier: synth sustain=1 note=A octave=-1

available to the input as note or something

need log and exp to do harmonics well. could be base 2 for octaves, or base 1.05946 for semitones

it'd be nice to have a component that has a list of commands. when evaluated, it should run all of its commands, and then evaluate the top element of the stack

example program:

[ 0.5 mul ] @half
440 sin
half