working

packages/core/controls.mjs

@@ -252,6 +252,18 @@ export const { fmenv } = registerControl('fmenv');
  *
  */
 export const { fmattack } = registerControl('fmattack');
+
+/**
+ * Attack time for the FM envelope: time it takes to reach maximum modulation
+ *
+ * @name fmwave
+ * @param {number | Pattern} wave waveform
+ * @example
+ * n("0 1 2 3".fast(4)).chord("<Dm Am F G>").voicing().s("sawtooth").fmwave("brown").fm(.6)
+ *
+ */
+export const { fmwave } = registerControl('fmwave');
+
 /**
  * Decay time for the FM envelope: seconds until the sustain level is reached after the attack phase.
  *

packages/superdough/helpers.mjs

@@ -1,5 +1,8 @@
 import { getAudioContext } from './superdough.mjs';
 import { clamp, nanFallback } from './util.mjs';
+import { getNoiseBuffer } from './noise.mjs';
+
+export const noises = ['pink', 'white', 'brown', 'crackle'];
 
 export function gainNode(value) {
   const node = getAudioContext().createGain();
@@ -216,9 +219,17 @@ export function webAudioTimeout(audioContext, onComplete, startTime, stopTime) {
 }
 const mod = (freq, range = 1, type = 'sine') => {
   const ctx = getAudioContext();
-  const osc = ctx.createOscillator();
-  osc.type = type;
-  osc.frequency.value = freq;
+  let osc;
+  if (noises.includes(type)) {
+    osc = ctx.createBufferSource();
+    osc.buffer = getNoiseBuffer(type, 2);
+    osc.loop = true;
+  } else {
+    osc = ctx.createOscillator();
+    osc.type = type;
+    osc.frequency.value = freq;
+  }
+
   osc.start();
   const g = new GainNode(ctx, { gain: range });
   osc.connect(g); // -range, range

packages/superdough/noise.mjs

@@ -4,7 +4,7 @@ import { getAudioContext } from './superdough.mjs';
 let noiseCache = {};
 
 // lazy generates noise buffers and keeps them forever
-function getNoiseBuffer(type, density) {
+export function getNoiseBuffer(type, density) {
   const ac = getAudioContext();
   if (noiseCache[type]) {
     return noiseCache[type];

packages/superdough/synth.mjs

@@ -9,6 +9,7 @@ import {
   getVibratoOscillator,
   webAudioTimeout,
   getWorklet,
+  noises,
 } from './helpers.mjs';
 import { getNoiseMix, getNoiseOscillator } from './noise.mjs';
 
@@ -40,7 +41,6 @@ const waveformAliases = [
   ['saw', 'sawtooth'],
   ['sin', 'sine'],
 ];
-const noises = ['pink', 'white', 'brown', 'crackle'];
 
 export function registerSynthSounds() {
   [...waveforms].forEach((s) => {