Zero crossing ?

[Inssomniak]

Hello

Is there a facility in any of the audio tools that one can use analog audio ADC or an i2s stream to determine zero crossing of the audio ? I’m looking for a way to run_some_code when the waveform is at zero/silent.

Thanks!

[pschatzmann]

I am not really sure what your purpose is. Though I am not officially supporting this I suggest that you have a look at the FrequncyZeroCrossingStream class. You can register a callback to be informed for each upward 0 crossing.

[Inssomniak]

Thanks that is exactly what I’m looking for. The purpose is to send commands to digital potentiometers when the audio output is at or near 0 to eliminate audio glitches.