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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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26
src/lib/audio/engines/Benjolin.ts
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@ -1,4 +1,4 @@
import type { SynthEngine } from './SynthEngine';
import type { SynthEngine, PitchLock } from './SynthEngine';
interface BenjolinParams {
// Core oscillators
@ -808,7 +808,7 @@ export class Benjolin implements SynthEngine<BenjolinParams> {
}
}
randomParams(): BenjolinParams {
randomParams(pitchLock?: PitchLock): BenjolinParams {
// Choose a random preset configuration
const preset = Math.floor(Math.random() * PRESET_COUNT);
@ -818,7 +818,9 @@ export class Benjolin implements SynthEngine<BenjolinParams> {
// Generate full parameter set with preset biases
const params: BenjolinParams = {
// Core oscillators
osc1Freq: presetParams.osc1Freq ?? (20 + Math.random() * 800),
osc1Freq: pitchLock?.enabled
? pitchLock.frequency
: presetParams.osc1Freq ?? (20 + Math.random() * 800),
osc2Freq: presetParams.osc2Freq ?? (30 + Math.random() * 1200),
osc1Wave: presetParams.osc1Wave ?? Math.random(),
osc2Wave: presetParams.osc2Wave ?? Math.random(),
@ -876,17 +878,17 @@ export class Benjolin implements SynthEngine<BenjolinParams> {
return params;
}
mutateParams(params: BenjolinParams): BenjolinParams {
mutateParams(params: BenjolinParams, mutationAmount?: number, pitchLock?: PitchLock): BenjolinParams {
const mutated = { ...params };
// Determine mutation strength based on current "stability"
const stability = (params.crossMod1to2 + params.crossMod2to1) / 2 +
params.runglerChaos + params.evolutionDepth;
const mutationAmount = stability > 1.5 ? 0.05 : stability < 0.5 ? 0.2 : 0.1;
const mutAmount = mutationAmount ?? (stability > 1.5 ? 0.05 : stability < 0.5 ? 0.2 : 0.1);
// Helper for correlated mutations
const mutateValue = (value: number, min: number, max: number, correlation = 1): number => {
const delta = (Math.random() - 0.5) * mutationAmount * (max - min) * correlation;
const delta = (Math.random() - 0.5) * mutAmount * (max - min) * correlation;
return Math.max(min, Math.min(max, value + delta));
};
@ -895,9 +897,15 @@ export class Benjolin implements SynthEngine<BenjolinParams> {
if (strategy < 0.3) {
// Mutate frequency relationships
const freqRatio = mutated.osc2Freq / mutated.osc1Freq;
mutated.osc1Freq = mutateValue(mutated.osc1Freq, 20, 2000);
mutated.osc2Freq = mutated.osc1Freq * mutateValue(freqRatio, 0.5, 4);
if (pitchLock?.enabled) {
mutated.osc1Freq = pitchLock.frequency;
const freqRatio = mutated.osc2Freq / params.osc1Freq;
mutated.osc2Freq = mutated.osc1Freq * mutateValue(freqRatio, 0.5, 4);
} else {
const freqRatio = mutated.osc2Freq / mutated.osc1Freq;
mutated.osc1Freq = mutateValue(mutated.osc1Freq, 20, 2000);
mutated.osc2Freq = mutated.osc1Freq * mutateValue(freqRatio, 0.5, 4);
}
// Correlate cross-mod amounts
const crossModDelta = (Math.random() - 0.5) * mutationAmount;