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integrated with envelopes

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This commit is contained in:
Jade (Rose) Rowland 2024-05-17 17:38:44 -04:00
parent d49c9dce4f
commit 4160639d88
3 changed files with 24 additions and 12 deletions
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20
packages/superdough/helpers.mjs
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@ -103,14 +103,22 @@ export const getADSRValues = (params, curve = 'linear', defaultValues) => {
return [Math.max(a ?? 0, envmin), Math.max(d ?? 0, envmin), Math.min(sustain, envmax), Math.max(r ?? 0, releaseMin)];
};
export function createFilter(context, type, frequency, Q, att, dec, sus, rel, fenv, start, end, fanchor) {
export function createFilter(context, type, frequency, Q, att, dec, sus, rel, fenv, start, end, fanchor, model) {
const curve = 'exponential';
const [attack, decay, sustain, release] = getADSRValues([att, dec, sus, rel], curve, [0.005, 0.14, 0, 0.1]);
const filter = context.createBiquadFilter();
let filter;
let frequencyParam;
if (model === 'ladder') {
filter = getWorklet(context, 'ladder-processor', { frequency, q: Q, drive: 1 });
frequencyParam = filter.parameters.get('frequency');
} else {
filter = context.createBiquadFilter();
filter.type = type;
filter.Q.value = Q;
filter.frequency.value = frequency;
frequencyParam = filter.frequency;
}
filter.type = type;
filter.Q.value = Q;
filter.frequency.value = frequency;
// envelope is active when any of these values is set
const hasEnvelope = att ?? dec ?? sus ?? rel ?? fenv;
// Apply ADSR to filter frequency
@ -122,7 +130,7 @@ export function createFilter(context, type, frequency, Q, att, dec, sus, rel, fe
let min = clamp(2 ** -offset * frequency, 0, 20000);
let max = clamp(2 ** (fenvAbs - offset) * frequency, 0, 20000);
if (fenv < 0) [min, max] = [max, min];
getParamADSR(filter.frequency, attack, decay, sustain, release, min, max, start, end, curve);
getParamADSR(frequencyParam, attack, decay, sustain, release, min, max, start, end, curve);
return filter;
}
return filter;