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prepare webaudio rewrite

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This commit is contained in:
Felix Roos 2022-06-16 23:53:29 +02:00
parent 25795eaecc
commit f69d776cf6
2 changed files with 83 additions and 0 deletions
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64
packages/webaudio/webaudio.mjs
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@ -92,3 +92,67 @@ Pattern.prototype.out = function () {
};
Pattern.prototype.define('wave', (type, pat) => pat.wave(type), { patternified: true });
/*
// TODO: throw all this away and use that:
stack(
freq("55 [110,165] 110 [220,275]".mul("<1 <3/4 2/3>>").struct("x(3,8)")
.layer(x=>x.mul("1.006,.995"))), // detune
freq("440(5,8)".legato(.18).mul("<1 3/4 2 2/3>")).gain(perlin.range(.2,.8))
).s("<sawtooth square>/2")
.cutoff(perlin.range(100,4000).slow(4))//.resonance(saw.range(0,15).slow(7))
.jux(rev)
.onTrigger((t,hap,ct) => {
const ac = Tone.getContext().rawContext;
// calculate correct time (tone.js workaround)
t = ac.currentTime + t - ct;
// destructure value
const { freq, s, gain = 1,
cutoff, resonance = 1,
hcutoff, hresonance = 1,
bandf, bandq = 1,
pan
} = hap.value;
// TODO get frequency from n or note
// oscillator
const o = ac.createOscillator();
o.type = s || 'triangle';
o.frequency.value = Number(freq);
o.start(t);
o.stop(t + hap.duration);
// chaining logic
let last = o;
const addToChain = (node) => {
last.connect(node);
last = node;
}
// filters
const getFilter = (type, frequency, Q) => {
const filter = ac.createBiquadFilter();
filter.type = type;
filter.frequency.value = frequency;
filter.Q.value = Q;
return filter;
}
cutoff !== undefined && addToChain(getFilter('lowpass', cutoff, resonance));
hcutoff !== undefined && addToChain(getFilter('highpass', hcutoff, hresonance));
bandf !== undefined && addToChain(getFilter('bandpass', bandf, bandq));
// TODO: vowel
// TODO: delay / delaytime / delayfeedback
// panning
if(pan !== undefined) {
const panner = ac.createStereoPanner();
panner.pan.value = 2*pan-1;
addToChain(panner);
}
// gain out
const master = ac.createGain();
master.gain.value = 0.1 * gain;
master.connect(ac.destination);
last.connect(master);
})
.stack(s("bd(3,8),hh*4,~ sd").webdirt())
*/

19
repl/src/tunes.mjs
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@ -816,3 +816,22 @@ stack(
"<Cm7 [Dm7b5 G7b9] Bbm7 [Cm7b5 F7b9]>".fast(2).struct("x ~ x@3 x ~ x ~ ~ ~ x ~ x@3".late(1/8)).early(1/8).slow(2).voicings(),
"[~ [0 ~]] 0 [~ [4 ~]] 4".sub(7).restart(scales).scale(scales).early(.25)
).tone((await piano()).toDestination()).slow(2)`;
export const customTrigger = `stack(
freq("55 [110,165] 110 [220,275]".mul("<1 <3/4 2/3>>").struct("x(3,8)").layer(x=>x.mul("1.006,.995"))),
freq("440(5,8)".legato(.18).mul("<1 3/4 2 2/3>")).gain(perlin.range(.2,.8))
).s("<sawtooth square>/2")
.onTrigger((t,hap,ct)=>{
const ac = Tone.getContext().rawContext;
t = ac.currentTime + t - ct;
const { freq, s, gain = 1 } = hap.value;
const master = ac.createGain();
master.gain.value = 0.1 * gain;
master.connect(ac.destination);
const o = ac.createOscillator();
o.type = s || 'triangle';
o.frequency.value = Number(freq);
o.connect(master);
o.start(t);
o.stop(t + hap.duration);
}).stack(s("bd(3,8),hh*4,~ sd").webdirt())`;