love it

src/App.tsx

@@ -45,6 +45,7 @@ function App() {
 
     playbackManagerRef.current.stop()
     playbackManagerRef.current.setEffects(effectValues)
+    playbackManagerRef.current.setPitch(engineValues.pitch ?? 1)
 
     const success = playbackManagerRef.current.play(formula, sampleRate, duration)
 
@@ -112,6 +113,10 @@ function App() {
     if (parameterId === 'masterVolume' && playbackManagerRef.current) {
       playbackManagerRef.current.setEffects(effectValues)
     }
+
+    if (parameterId === 'pitch' && playbackManagerRef.current) {
+      playbackManagerRef.current.setPitch(value)
+    }
   }
 
   const handleEffectChange = (parameterId: string, value: number | boolean) => {