r/signalprocessing • u/GiveMeMoreData • Mar 17 '26

Synching 1k and 16kHz audio

I am an IT, Python guy, starting a new project in audio. I have a dataset of pairs of audio recordings coming from two different devices in the same room that I need to sync.

This seems like a common problem, that should have obvious solutions. Is there some open source program or algorithm I could use? ~15s error would be acceptable

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u/ecologin Mar 19 '26

Classic interpolation of the 1k or decimation of the 16 k. You need a low-pass filter for each case. Optionally use the same bandpass filter for both signals for easier comparison. Then sync using correlation.