hacklab/strudel
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge branch 'main' into uzu

Browse source
This commit is contained in:
Felix Roos 2025-06-18 21:26:51 +02:00
commit 28cd7c1681
No known key found for this signature in database
186 changed files with 3188 additions and 2138 deletions
Download patch file Download diff file Expand all files Collapse all files

105
packages/superdough/synth.mjs
View file

@ -1,5 +1,5 @@
import { clamp, midiToFreq, noteToMidi } from './util.mjs';
import { registerSound, getAudioContext, soundMap } from './superdough.mjs';
import { registerSound, getAudioContext, soundMap, getLfo } from './superdough.mjs';
import {
applyFM,
gainNode,
@ -26,6 +26,9 @@ const getFrequencyFromValue = (value) => {
return Number(freq);
};
function destroyAudioWorkletNode(node) {
if (node == null) {
return;
}
node.disconnect();
node.parameters.get('end')?.setValueAtTime(0, 0);
}
@ -147,11 +150,100 @@ export function registerSynthSounds() {
{ prebake: true, type: 'synth' },
);
registerSound(
'bytebeat',
(begin, value, onended) => {
const defaultBeats = [
'(t%255 >= t/255%255)*255',
'(t*(t*8%60 <= 300)|(-t)*(t*4%512 < 256))+t/400',
't',
't*(t >> 10^t)',
't&128',
't&t>>8',
'((t%255+t%128+t%64+t%32+t%16+t%127.8+t%64.8+t%32.8+t%16.8)/3)',
'((t%64+t%63.8+t%64.15+t%64.35+t%63.5)/1.25)',
'(t&(t>>7)-t)',
'(sin(t*PI/128)*127+127)',
'((t^t/2+t+64*(sin((t*PI/64)+(t*PI/32768))+64))%128*2)',
'((t^t/2+t+64*(cos >> 0))%127.85*2)',
'((t^t/2+t+64)%128*2)',
'(((t * .25)^(t * .25)/100+(t * .25))%128)*2',
'((t^t/2+t+64)%7 * 24)',
];
const { n = 0 } = value;
const frequency = getFrequencyFromValue(value);
const { byteBeatExpression = defaultBeats[n % defaultBeats.length], byteBeatStartTime } = value;
const ac = getAudioContext();
let { duration } = value;
const [attack, decay, sustain, release] = getADSRValues(
[value.attack, value.decay, value.sustain, value.release],
'linear',
[0.001, 0.05, 0.6, 0.01],
);
const holdend = begin + duration;
const end = holdend + release + 0.01;
let o = getWorklet(
ac,
'byte-beat-processor',
{
frequency,
begin,
end,
},
{
outputChannelCount: [2],
},
);
o.port.postMessage({ codeText: byteBeatExpression, byteBeatStartTime, frequency });
let envGain = gainNode(1);
envGain = o.connect(envGain);
getParamADSR(envGain.gain, attack, decay, sustain, release, 0, 1, begin, holdend, 'linear');
let timeoutNode = webAudioTimeout(
ac,
() => {
destroyAudioWorkletNode(o);
envGain.disconnect();
onended();
},
begin,
end,
);
return {
node: envGain,
stop: (time) => {
timeoutNode.stop(time);
},
};
},
{ prebake: true, type: 'synth' },
);
registerSound(
'pulse',
(begin, value, onended) => {
const ac = getAudioContext();
let { duration, n: pulsewidth = 0.5 } = value;
let { pwrate, pwsweep } = value;
if (pwsweep == null) {
if (pwrate != null) {
pwsweep = 0.3;
} else {
pwsweep = 0;
}
}
if (pwrate == null && pwsweep != null) {
pwrate = 1;
}
let { duration, pw: pulsewidth = 0.5 } = value;
const frequency = getFrequencyFromValue(value);
const [attack, decay, sustain, release] = getADSRValues(
@ -159,10 +251,8 @@ export function registerSynthSounds() {
'linear',
[0.001, 0.05, 0.6, 0.01],
);
const holdend = begin + duration;
const end = holdend + release + 0.01;
let o = getWorklet(
ac,
'pulse-oscillator',
@ -184,11 +274,16 @@ export function registerSynthSounds() {
envGain = o.connect(envGain);
getParamADSR(envGain.gain, attack, decay, sustain, release, 0, 1, begin, holdend, 'linear');
let lfo;
if (pwsweep != 0) {
lfo = getLfo(ac, begin, end, { frequency: pwrate, depth: pwsweep });
lfo.connect(o.parameters.get('pulsewidth'));
}
let timeoutNode = webAudioTimeout(
ac,
() => {
destroyAudioWorkletNode(o);
destroyAudioWorkletNode(lfo);
envGain.disconnect();
onended();
fm?.stop();