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add fanchor

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This commit is contained in:
Felix Roos 2023-09-16 01:14:14 +02:00
parent 7dbcc90450
commit e959c275fd
3 changed files with 33 additions and 4 deletions
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18
packages/superdough/helpers.mjs
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@ -78,7 +78,20 @@ export const getParamADSR = (param, attack, decay, sustain, release, min, max, b
param.linearRampToValueAtTime(min, end + Math.max(release, 0.1));
};
export function createFilter(context, type, frequency, Q, attack, decay, sustain, release, fenv, start, end) {
export function createFilter(
context,
type,
frequency,
Q,
attack,
decay,
sustain,
release,
fenv,
start,
end,
fanchor = 0.5,
) {
const filter = context.createBiquadFilter();
filter.type = type;
filter.Q.value = Q;
@ -86,8 +99,7 @@ export function createFilter(context, type, frequency, Q, attack, decay, sustain
// Apply ADSR to filter frequency
if (fenv !== 0) {
const anchor = 0.5;
const offset = fenv * anchor;
const offset = fenv * fanchor;
const min = clamp(2 ** -offset * frequency, 0, 20000);
const max = clamp(2 ** (fenv - offset) * frequency, 0, 20000);