message: adding some ascii art to better explain
diff: @@ -12,6 +12,20 @@ interface CrossFadeOptions extends ToneAudioNodeOptions {
  /**
  * Tone.Crossfade provides equal power fading between two inputs.
  * More on crossfading technique [here](https://en.wikipedia.org/wiki/Fade_(audio_engineering)#Crossfading).
  + * ```
  + * +---------+
  + * +> input a +>--+
  + * +-----------+ +---------------------+ | | |
  + * | 1s signal +>--> stereoPannerNode L +>----> gain | |
  + * +-----------+ | | +---------+ |
  + * +-> pan R +>-+ | +--------+
  + * | +---------------------+ | +---> output +>
  + * +------+ | | +---------+ | +--------+
  + * | fade +>----+ | +> input b +>--+
  + * +------+ | | |
  + * +--> gain |
  + * +---------+
  + * ```
  * @example
  * var crossFade = new CrossFade(0.5);
  * //connect effect A to crossfade from
  