Hello wdmdevaudio people!
I am developing an APO for my customers USB headset, which applies a DSP
process to the headphone signal. I want the mic to function "nominally"
i.e. using the inbox USB driver.
However I observe different behaviours on Windows 7 versus Windows 10 best
described as below:
1. Before installing my APO, the Headset mic works normally, for both
Windows 7 and Windows 10.
2. After installing my APO: on Windows 10 the mic works fine as before
but on Windows 7 it doesn't - I can "see" the device in the Recording
devices tab of the Sound Control Panel for but the audio meter does not
register any audio. Furthermore Windows App software like eg Skype shows
the mic in its Audio Settings but again no audio.
I suspect the issue must be in my .inf file. I (maybe naively) thought
that, given that I don't need to do anything special with the mic then no
specific .inf entry would be required for it... and certainly that seems to
be the case for Windows 10, but not Windows 7.
Any tips/suggestions please as to what's going on and what I should be
looking at to figure this out?
Thanks!
Culann
