It’s sounds like more of a pitch change. I just created a blank project to test it.

  1. Put a single trig on track1 trig 1 and start playback
  2. Turn up delay on track 1
  3. Press the track 1 button or any of the other track select buttons repeatedly during playback and notice the effect

When I do this I hear changes in the pitch of the note being played back…

I’ll try and make a quick video…