A noise-gate where A2 is the control track: squelching A1 to silence when the envelope of A2 goes below a threshold.
or alternatively an envelope-follower, such as Steve’s dynamic-mirror plugin …
A noise-gate where A2 is the control track: squelching A1 to silence when the envelope of A2 goes below a threshold.
or alternatively an envelope-follower, such as Steve’s dynamic-mirror plugin …