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clean interface

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This commit is contained in:
Raphaël Forment
2025-10-12 11:32:36 +02:00
parent 6c11c5756a
commit fcb784d403
13 changed files with 536 additions and 118 deletions
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62
src/lib/audio/engines/DubSiren.ts
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@ -1,4 +1,4 @@
import type { SynthEngine } from './SynthEngine';
import type { SynthEngine, PitchLock } from './SynthEngine';
enum OscillatorWaveform {
Sine,
@ -427,22 +427,33 @@ export class DubSiren implements SynthEngine<DubSirenParams> {
return [output, v1Next, v2Next];
}
randomParams(): DubSirenParams {
const freqPairs = [
[100, 1200],
[200, 800],
[300, 2000],
[50, 400],
[500, 3000],
[150, 600],
];
randomParams(pitchLock?: PitchLock): DubSirenParams {
let startFreq: number;
let endFreq: number;
const [startFreq, endFreq] = this.randomChoice(freqPairs);
const shouldReverse = Math.random() < 0.3;
if (pitchLock?.enabled) {
// When pitch locked, sweep around the locked frequency
startFreq = pitchLock.frequency;
endFreq = pitchLock.frequency * (Math.random() < 0.5 ? 0.5 : 2);
} else {
const freqPairs = [
[100, 1200],
[200, 800],
[300, 2000],
[50, 400],
[500, 3000],
[150, 600],
];
const [freq1, freq2] = this.randomChoice(freqPairs);
const shouldReverse = Math.random() < 0.3;
startFreq = shouldReverse ? freq2 : freq1;
endFreq = shouldReverse ? freq1 : freq2;
}
return {
startFreq: shouldReverse ? endFreq : startFreq,
endFreq: shouldReverse ? startFreq : endFreq,
startFreq,
endFreq,
sweepCurve: this.randomInt(0, 4) as SweepCurve,
waveform: this.randomInt(0, 4) as OscillatorWaveform,
pulseWidth: this.randomRange(0.1, 0.9),
@ -464,10 +475,27 @@ export class DubSiren implements SynthEngine<DubSirenParams> {
};
}
mutateParams(params: DubSirenParams, mutationAmount: number = 0.15): DubSirenParams {
mutateParams(params: DubSirenParams, mutationAmount: number = 0.15, pitchLock?: PitchLock): DubSirenParams {
let startFreq: number;
let endFreq: number;
if (pitchLock?.enabled) {
// When pitch locked, keep one frequency at the locked value
if (Math.random() < 0.5) {
startFreq = pitchLock.frequency;
endFreq = this.mutateValue(params.endFreq, mutationAmount, 20, 5000);
} else {
startFreq = this.mutateValue(params.startFreq, mutationAmount, 20, 5000);
endFreq = pitchLock.frequency;
}
} else {
startFreq = this.mutateValue(params.startFreq, mutationAmount, 20, 5000);
endFreq = this.mutateValue(params.endFreq, mutationAmount, 20, 5000);
}
return {
startFreq: this.mutateValue(params.startFreq, mutationAmount, 20, 5000),
endFreq: this.mutateValue(params.endFreq, mutationAmount, 20, 5000),
startFreq,
endFreq,
sweepCurve: Math.random() < 0.1 ? this.randomInt(0, 4) as SweepCurve : params.sweepCurve,
waveform: Math.random() < 0.1 ? this.randomInt(0, 4) as OscillatorWaveform : params.waveform,
pulseWidth: this.mutateValue(params.pulseWidth, mutationAmount, 0.05, 0.95),