Soft/quiet noise

Checklists:

1. Check that you’re using the latest (git) version of the libraries.

2. Check whether you have this noise when looping the microphone to the speaker locally: If yes, then the noise is probably introduced by your sound device (it’s quite common with onboard sound adapters).

3. Be mindful with combination of sampling rate and ptime that causes non-whole number of samples. See Check for problematic clock rate.