GitHub - lexszero/jitsynth: Simple parametric sound synthesizer

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Name		Name	Last commit message	Last commit date
Latest commit History 41 Commits
.gitignore		.gitignore
Makefile		Makefile
README		README
TODO		TODO
common.h		common.h
function.c		function.c
function.h		function.h
function_test.c		function_test.c
generic_list.h		generic_list.h
player.c		player.c
player.h		player.h
synth.c		synth.c
test.synth		test.synth
test2.synth		test2.synth
track.c		track.c
track.h		track.h
util.c		util.c
xface.c		xface.c
xface.h		xface.h

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Usage example:
	aoss ./synth < test.synth



Defining functions
	function <name> <body>

Body is written as prefix expression with following syntax:
	<func> ::= <unary> <func> | <binary> <func> <func> | <ternary> <func> <func> <func> | <terminal>
	<unary> ::= "sin" | <TODO_more_operators>
	<binary> ::= "+" | "-" | "*" | "/" | "%" | "<" | ">" | FUNCTION
	<ternary> ::= "if"
	<terminal> ::= NUMBER | ARGUMENT | CONSTANT
	
Function arguments:
	F - note frequency
	X - sample number from the beginning of note
	LEN - total requested duration in samples (actually, not an "argument" in expressions. fucked up, i know.)
Constants:
	RATE - sample rate
	PI - pi constant

FUNCTION calls in expression takes two arguments (F and X), LEN is defined at highest function level.
	

Commands (NOT YET IMPLEMENTED) (need discussion about this)

Generic
	v<X> - set track volume to X/100, X ∊ [0, 255] (we can do some overload/distortion :3)

High-level (translates to low-level internally)
	t<X> - set tempo to X full notes per minute, X ∊ [0, 65535]
	o<X> - set octave to X, if X≡1 ⇒ note A = 440 Hz (can be negative)
	d<X> - set note duration to 1/2^X
	X[,<length_spec>] - play note X, X ∊ [-128,127] (in semitones from A) with duration setted by 'd' command.
	-[<length_spec>] - pause with duration setted by 'd' command

	<length_spec> - optional parameter
		. - dotted (1½)
		3 - triol (⅔)
		<X> - duration = 1/2^X*full_note_duration
		<X.Y> - duration = 

Low-level (result of translation of high-level commands, also can be given directly)
	(<freq>, <duration>) - play sound with given frequency and duration.
	(0, <duration>) - keep silent some time