https://bugs.winehq.org/show_bug.cgi?id=46725
--- Comment #16 from Ethan Lee flibitijibibo@gmail.com --- I have evidence of my idea locally, but I haven’t done a thorough test of the inputs and outputs (i.e. try every integer value as a frequency against all provided frequencies the driver supports on all the hardware at my disposal). Having that kind of thing in a table would be a good start in determining how this is calculated in the XAudio2 mastering voice creation.