I have a couple of tracks which have a loud section which fades away, and then a vocal section starts. Before the vocal, there is a sort of bark/glitch of audio. It sounds something like an echo, but comes before the audio.
I have all my audio routed to a number of mixing groups, and then sends to two fx channels for pingpong delay and reverb. If I turn off both fx channels, the noise goes away. The noise is not there if I only play or export a short section of song, but If I play or export the part where the music fades out before the audio comes in, then I get the unwanted noise.
To remove the noise, I have automated both fx channels as shown in the image, and that gets rid of it, but I’d like to know what I’m doing to put it there in the first place, if anyone has any ideas?
The noise can be heard in the linked mp3 file.