frequency mod

packages/core/controls.mjs

@@ -1319,6 +1319,18 @@ export const { lpsync } = registerControl('lpsync');
  */
 
 export const { lpdepth } = registerControl('lpdepth');
+/**
+ * Depth of the LFO for the lowpass filter, in HZ
+ *
+ * @name lpdepthfrequency
+ * @synonyms
+ * lpdethfreq
+ * @param {number | Pattern} depth depth of modulation
+ * @example
+ * note("<c c c# c c c4>*16").s("sawtooth").lpf(600).lpdepthfrequency("<200 500 100 0>")
+ */
+
+export const { lpdepthfrequency } = registerControl('lpdepthfrequency', 'lpdepthfreq');
 
 /**
  * Shape of the LFO for the lowpass filter
@@ -1368,6 +1380,19 @@ export const { bpsync } = registerControl('bpsync');
  */
 export const { bpdepth } = registerControl('bpdepth');
 
+/**
+ * Depth of the LFO for the bandpass filter, in HZ
+ *
+ * @name bpdepthfrequency
+ * @synonyms
+ * bpdethfreq
+ * @param {number | Pattern} depth depth of modulation
+ * @example
+ * note("<c c c# c c c4>*16").s("sawtooth").lpf(600).bpdepthfrequency("<200 500 100 0>")
+ */
+
+export const { bpdepthfrequency } = registerControl('bpdepthfrequency', 'bpdepthfreq');
+
 /**
  * Shape of the LFO for the bandpass filter
  *
@@ -1414,7 +1439,20 @@ export const { hpsync } = registerControl('hpsync');
  * @name hpdepth
  * @param {number | Pattern} depth depth of modulation
  */
-export const { hpdepth } = registerControl('hpdepth');
+export const { hpdepth, hpdepthfreq } = registerControl('hpdepth');
+
+/**
+ * Depth of the LFO for the hipass filter, in hz
+ *
+ * @name hpdepthfrequency
+ * @synonyms
+ * hpdethfreq
+ * @param {number | Pattern} depth depth of modulation
+ * @example
+ * note("<c c c# c c c4>*16").s("sawtooth").lpf(600).hpdepthfrequency("<200 500 100 0>")
+ */
+
+export const { hpdepthfrequency } = registerControl('hpdepthfrequency', 'hpdepthfreq');
 
 /**
  * Shape of the LFO for the highpass filter

packages/superdough/helpers.mjs

@@ -201,12 +201,14 @@ export function createFilter(context, start, end, params, cps, cycle) {
     q = 1,
     drive = 0.69,
     depth,
+    depthfrequency,
     dcoffset = -0.5,
     skew,
     shape,
     rate,
     sync,
   } = params;
+
   let frequencyParam, filter;
   if (model === 'ladder') {
     filter = getWorklet(context, 'ladder-processor', { frequency, q, drive });
@@ -237,12 +239,13 @@ export function createFilter(context, start, end, params, cps, cycle) {
   if (sync != null) {
     rate = cps * sync;
   }
-  const hasLFO = [depth, skew, shape, rate].some((v) => v !== undefined);
+  const hasLFO = [depth, depthfrequency, skew, shape, rate].some((v) => v !== undefined);
   if (hasLFO) {
     depth = depth ?? 1;
     const time = cycle / cps;
+    const modDepth = depthfrequency ?? (depth ?? 1) * frequency;
     const lfoValues = {
-      depth: (depth ?? 1) * frequency,
+      depth: modDepth,
       dcoffset,
       skew,
       shape,

packages/superdough/superdough.mjs

@@ -553,6 +553,7 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
       rate: 'lprate',
       sync: 'lpsync',
       depth: 'lpdepth',
+      depthfrequency: 'lpdepthfrequency',
       shape: 'lpshape',
       dcoffset: 'lpdc',
       skew: 'lpskew',
@@ -581,13 +582,14 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
       rate: 'hprate',
       sync: 'hpsync',
       depth: 'hpdepth',
+      depthfrequency: 'hpdepthfrequency',
       shape: 'hpshape',
       dcoffset: 'hpdc',
       skew: 'hpskew',
     };
     const hpParams = pickAndRename(value, hpMap);
     hpParams.type = 'highpass';
-    let hp = () => createFilter(ac, t, end, hpParams, cps);
+    let hp = () => createFilter(ac, t, end, hpParams, cps, cycle);
     chain.push(hp());
     if (ftype === '24db') {
       chain.push(hp());
@@ -609,13 +611,14 @@ export const superdough = async (value, t, hapDuration, cps = 0.5, cycle = 0.5)
       rate: 'bprate',
       sync: 'bpsync',
       depth: 'bpdepth',
+      depthfrequency: 'bpdepthfrequency',
       shape: 'bpshape',
       dcoffset: 'bpdc',
       skew: 'bpskew',
     };
     const bpParams = pickAndRename(value, bpMap);
     bpParams.type = 'bandpass';
-    let bp = () => createFilter(ac, t, end, bpParams, cps);
+    let bp = () => createFilter(ac, t, end, bpParams, cps, cycle);
     chain.push(bp());
     if (ftype === '24db') {
       chain.push(bp());