Delay DSP crackles when when automating feedback/delay/wet


I am sending up to 60 updates/second to FMOD to dynamically modulate Delay DSP parameters (delay, feedback, wet level). In doing so, the audio crackles.

In other instances, I am updating reverb or pitch. Here, the performance is superb and no crackling occurs.

Something tells me the crackles are to be expected when messing with the delay time (since I believe delays are implemented using circular buffers, and constantly setting and changing such buffer creates “missing” audio, which sounds as a crackle).

Could you perhaps tell me more? Is this a bug or is messing with the delay time so much an obvious “don’t do”.

Could you reproduce the problem in a test case, perhaps by modifying the simple_event sample? It would help us track down the issue you describe.