[woodson]

Check out this one: https://github.com/wiseman/py-webrtcvad

If this one does not work for your application, perhaps look into simpler ones like the ones used in mobile telephone codecs or in Speex.

[JabavuAdams]

Thanks! This is exactly what I needed. I was able to get it up and running on Raspberry Pi with just "pip3 install webrtcvad", and the quality is at least good enough to get me started.