Some of the QAudioDevice APIs are inadequate:

• we report min/max sampling rate, not the sampling rates that are actually supported.
• QAudioFormat specifies int8/16/32 and float. but there is no good way to specify 24bit integers, which could be encoded into a 3byte stream or a 4-byte streams (with lowest or highest byte being zero. one could very well argue that float32 should be the only format used internally inside Qt