Using the amix filter didn't work either although i was able to combine an arbitrary number of input files, they all started at the same time, because i haven't been able to delay the onset of each individual component audio file beforehand. The script doesn't know beforehand how long each of the source audio files will be, so a simple -filter_complex using concat didn't work.
For example, if i have the files beep1.wav, beep2.wav, and beep3.wav, the resulting output.wav should be a mono sound file where the contents of beep2.wav will be heard starting at the 1-second mark, the contents of beep3.wav at the 2-second mark, etc. wav file must start n seconds into the final output file. I'm trying to write a script that will take an arbitrary number of of.
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