message: marking signal value to readonly
diff: @@ -71,7 +71,7 @@ export class AMOscillator extends Source<AMOscillatorOptions> implements Oscilla
  * //pitch the modulator an octave below carrier
  * synth.harmonicity.value = 0.5;
  */
  - harmonicity = new Multiply({
  + readonly harmonicity: Signal<Positive> = new Multiply({
  context: this.context,
  units: "positive",
  });
  