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This commit is contained in:
Jade (Rose) Rowland 2025-11-22 22:49:23 -05:00
parent 2518b2aed2
commit 30e672a027
2 changed files with 23 additions and 6 deletions
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27
packages/superdough/helpers.mjs
View file

@ -191,8 +191,10 @@ export function applyParameterModulators(audioContext, param, start, end, envelo
const lfo = getParamLfo(audioContext, param, start, end, lfoValues); const lfo = getParamLfo(audioContext, param, start, end, lfoValues);
return { lfo, disconnect: () => lfo?.disconnect() }; return { lfo, disconnect: () => lfo?.disconnect() };
} }
function biloparExponential(x, k) {
export function createFilter(context, start, end, params, cps) { return Math.sign(x) * 2 ** (Math.abs(x) * k);
}
export function createFilter(context, start, end, params, cps, cycle) {
let { let {
frequency, frequency,
anchor, anchor,
@ -231,6 +233,7 @@ export function createFilter(context, start, end, params, cps) {
const offset = envAbs * anchor; const offset = envAbs * anchor;
let min = clamp(2 ** -offset * frequency, 0, 20000); let min = clamp(2 ** -offset * frequency, 0, 20000);
let max = clamp(2 ** (envAbs - offset) * frequency, 0, 20000); let max = clamp(2 ** (envAbs - offset) * frequency, 0, 20000);
if (env < 0) [min, max] = [max, min]; if (env < 0) [min, max] = [max, min];
getParamADSR(frequencyParam, attack, decay, sustain, release, min, max, start, end, 'exponential'); getParamADSR(frequencyParam, attack, decay, sustain, release, min, max, start, end, 'exponential');
} }
@ -238,8 +241,22 @@ export function createFilter(context, start, end, params, cps) {
if (sync != null) { if (sync != null) {
rate = cps * sync; rate = cps * sync;
} }
const lfoValues = { depth, dcoffset, skew, shape, frequency: rate, min: 10, max: 20000 }; const hasLFO = [depth, skew, shape, rate].some((v) => v !== undefined);
getParamLfo(context, frequencyParam, start, end, lfoValues); if (hasLFO) {
depth = depth ?? 1
const mag = Math.abs(depth);
const sign = Math.sign(depth);
const shaped = 2 ** (mag * (1 - dcoffset));
const dp = clamp((sign * shaped * frequency) - frequency, -20000, 20000);
console.info(dp)
const time = cycle / cps;
// let d = 2 ** -dcoffset
const lfoValues = { depth: dp, dcoffset, skew, shape, frequency: rate, min: 10, max: 20000, time };
getParamLfo(context, frequencyParam, start, end, lfoValues);
}
return filter; return filter;
} }
@ -386,7 +403,7 @@ export function applyFM(param, value, begin) {
duration, duration,
} = value; } = value;
let modulator; let modulator;
let stop = () => {}; let stop = () => { };
if (fmModulationIndex) { if (fmModulationIndex) {
const ac = getAudioContext(); const ac = getAudioContext();

2
packages/superdough/superdough.mjs
View file

@ -559,7 +559,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
}; };
const lpParams = pickAndRename(value, lpMap); const lpParams = pickAndRename(value, lpMap);
lpParams.type = 'lowpass'; lpParams.type = 'lowpass';
let lp = () => createFilter(ac, t, end, lpParams, cps); let lp = () => createFilter(ac, t, end, lpParams, cps, cycle);
chain.push(lp()); chain.push(lp());
if (ftype === '24db') { if (ftype === '24db') {
chain.push(lp()); chain.push(lp());