working

packages/core/controls.mjs

@@ -458,6 +458,49 @@ export const { drive } = registerControl('drive');
  */
 export const { channels, ch } = registerControl('channels', 'ch');
 
+/**
+ * controls the pulsewidth of the pulse oscillator
+ *
+ * @name pw
+ * @param {number | Pattern} pulsewidth
+ * @example
+ * note("{f a c e}%16").s("pulse").pw(".8:1:.2")
+ * @example
+ * n(run(8)).scale("D:pentatonic").s("pulse").pw("0 .75 .5 1")
+ */
+export const { pw } = registerControl(
+  ['pw', 'pwrate', 'pwsweep'],
+);
+
+/**
+ * controls the lfo rate for the pulsewidth of the pulse oscillator
+ *
+ * @name pwrate
+ * @param {number | Pattern} rate
+ * @example
+ * n(run(8)).scale("D:pentatonic").s("pulse").pw("0.5").pwrate("<5 .1 25>").pwsweep("<0.3 .8>")
+
+ *
+ */
+export const { pwrate } = registerControl(
+  'pwrate'
+);
+
+
+/**
+ * controls the lfo sweep for the pulsewidth of the pulse oscillator
+ *
+ * @name pwsweep
+ * @param {number | Pattern} sweep
+ * @example
+ * n(run(8)).scale("D:pentatonic").s("pulse").pw("0.5").pwrate("<5 .1 25>").pwsweep("<0.3 .8>")
+ *
+ */
+export const { pwsweep } = registerControl(
+  'pwsweep'
+);
+
+
 /**
  * Phaser audio effect that approximates popular guitar pedals.
  *

packages/superdough/superdough.mjs

@@ -307,16 +307,9 @@ function getDelay(orbit, delaytime, delayfeedback, t) {
   return delays[orbit];
 }
 
-function getPhaser(time, end, frequency = 1, depth = 0.5, centerFrequency = 1000, sweep = 2000) {
+export function getLfo(audioContext, time, end, properties = {}) {
-  //gain
+  return getWorklet(audioContext, 'lfo-processor', {
-  const ac = getAudioContext();
+    frequency: 1,
-  const lfoGain = ac.createGain();
-  lfoGain.gain.value = sweep * 2;
-  // centerFrequency = centerFrequency * 2;
-  // sweep = sweep * 1.5;
-
-  const lfo = getWorklet(ac, 'lfo-processor', {
-    frequency,
     depth: 1,
     skew: 0,
     phaseoffset: 0,
@@ -324,8 +317,13 @@ function getPhaser(time, end, frequency = 1, depth = 0.5, centerFrequency = 1000
     end,
     shape: 1,
     dcoffset: -0.5,
+    ...properties
   });
-  lfo.connect(lfoGain);
+}
+
+function getPhaser(time, end, frequency = 1, depth = 0.5, centerFrequency = 1000, sweep = 2000) {
+  const ac = getAudioContext();
+  const lfoGain = getLfo(ac, time, end, { frequency, depth: sweep * 2 })
 
   //filters
   const numStages = 2; //num of filters in series

packages/superdough/synth.mjs

@@ -1,5 +1,5 @@
 import { clamp, midiToFreq, noteToMidi } from './util.mjs';
-import { registerSound, getAudioContext } from './superdough.mjs';
+import { registerSound, getAudioContext, getLfo } from './superdough.mjs';
 import {
   applyFM,
   gainNode,
@@ -145,7 +145,20 @@ export function registerSynthSounds() {
     'pulse',
     (begin, value, onended) => {
       const ac = getAudioContext();
-      let { duration, n: pulsewidth = 0.5 } = value;
+      let { pwrate, pwsweep } = value;
+      if (pwsweep == null) {
+        if (pwrate != null) {
+          pwsweep = 0.3
+        } else {
+          pwsweep = 0
+        }
+      } 
+
+      if (pwrate == null && pwsweep != null) {
+        pwrate = 1
+      }
+
+      let { duration, pw: pulsewidth = value.n ?? 0.5, } = value;
       const frequency = getFrequencyFromValue(value);
 
       const [attack, decay, sustain, release] = getADSRValues(
@@ -153,10 +166,8 @@ export function registerSynthSounds() {
         'linear',
         [0.001, 0.05, 0.6, 0.01],
       );
-
       const holdend = begin + duration;
       const end = holdend + release + 0.01;
-
       let o = getWorklet(
         ac,
         'pulse-oscillator',
@@ -179,10 +190,16 @@ export function registerSynthSounds() {
 
       getParamADSR(envGain.gain, attack, decay, sustain, release, 0, 1, begin, holdend, 'linear');
 
+
+      if (pwsweep != 0) {
+        let lfo = getLfo(ac, begin, end, { frequency: pwrate, depth: pwsweep, })
+        lfo.connect(o.parameters.get('pulsewidth'))
+      }
       let timeoutNode = webAudioTimeout(
         ac,
         () => {
           destroyAudioWorkletNode(o);
+          destroyAudioWorkletNode(lfo);
           envGain.disconnect();
           onended();
           fm?.stop();