In the following Waves plug-in tutorial by Eli Krantzberg, learn how to duck and gradually gate repeating delays.
Delay Ducking with Waves H-Delay and Waves C1 Gate
Eli ducks delays by sending to an aux bus with a C1 Gate set up after an H-Delay, and side chaining the original source signal into the gate.
H-Delay and C1 Gate
H-Delay and C1 Gate are both on sale as part of the Waves Gold bundle for $249 from June 27 - June 30, 2016. The Gold bundle contains over 35 essential audio plugins for mixing and mastering, including the legendary L1 Ultramaximizer, C4 Multiband Compressor, H-Comp, and H-Delay, as well as newer additions such as the Vitamin Sonic Enhancer.