Improve getOscillator/noiseMix release

packages/superdough/helpers.mjs

@@ -283,9 +283,12 @@ export function drywet(dry, wet, wetAmount = 0) {
   wet_gain.connect(mix);
   return {
     node: mix,
-    onended: () => {
-      dry_gain.disconnect(mix);
-      wet_gain.disconnect(mix);
+    teardown: () => {
+      releaseAudioNode(dry_gain);
+      releaseAudioNode(wet_gain);
+      // it is not the responsability of drywet
+      // to call `releaseAudioNode` on
+      // the 2 external args dry and wet
       dry.disconnect(dry_gain);
       wet.disconnect(wet_gain);
     },

packages/superdough/noise.mjs

@@ -1,4 +1,4 @@
-import { drywet, onceEnded } from './helpers.mjs';
+import { drywet, onceEnded, releaseAudioNode } from './helpers.mjs';
 import { getAudioContext } from './audioContext.mjs';
 
 let noiseCache = {};
@@ -65,9 +65,12 @@ export function getNoiseOscillator(type = 'white', t, density = 0.02) {
 export function getNoiseMix(inputNode, wet, t) {
   const noiseOscillator = getNoiseOscillator('pink', t);
   const noiseMix = drywet(inputNode, noiseOscillator.node, wet);
-  onceEnded(noiseOscillator.node, () => noiseMix.onended());
+  onceEnded(noiseOscillator.node, () => {
+    releaseAudioNode(noiseOscillator.node);
+  });
   return {
     node: noiseMix.node,
     stop: (time) => noiseOscillator?.stop(time),
+    teardown: noiseMix.teardown,
   };
 }

packages/superdough/synth.mjs

@@ -491,7 +491,8 @@ export function getOscillator(s, t, value, onended) {
   }
 
   onceEnded(o, () => {
-    noiseMix || releaseAudioNode(o);
+    noiseMix?.teardown();
+    releaseAudioNode(o);
     releaseAudioNode(noiseMix?.node);
     onended();
   });