PyAudio with 24 bit under windows

Here are the results, proofing that with the WASAPI architecture I got true audio 24 bit samples under Windows 7:



Architecture: MME (default for PyAudio)
Requested resolution: 16 bit

Architecture: MME (default for PyAudio)

Requested resolution: 24 bit

Note that the returned data has still only 16 bit precission and is zero padded to 24 bit.

 

 Architecture: WASAPI
Requested resolution: 16 bit

Architecture: WASAPI 

Requested resolution: 24 bit

This is how it should be. Note the much better resolution. Now the analog part of the soundcard is determining the noise floor and not the quantization noise.