Raspberry Pi User Help

How to fix abrupt start to audio

I am using rpi4b with raspbian dated dec 2020 and seeed respeaker mic hat 2 and notice there is an abrupt start followed by some silence to the audio.

Here is a sample with a simple test arecord -D plughw:1,0 -f S16_LE -r16000 file.wav


I have tried applying some filters using ladspa (delay and fadein) and other alsa configurations without success.

Does anyone have any ideas on how to fix this?

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