[wdmaudiodev] USB microphone volume
- From: Yanto Suryono <yanto.suryono@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Sat, 24 Oct 2009 07:57:08 +0900
Hi,
I have a USB audio class device that uses usbaudio.sys.
The device has an audio input with no feature unit to control the
input volume. It reports its input terminal as microphone input but
actually it is a line input.
With WinXP everything was fine since with the lack of hardware volume
the microphone volume in volume controller was greyed out.
However, with Win7, the device input, detected as microphone input
now has a volume slider, which I suspect is a software volume
(since the hardware does not support any volume setting). The problem
is that the software volume introduces a big gain that the
recorded line input will be distorted with volume set at anything
above 2 (out of 100). This leaves usable volume setting at 0 (mute)
or 1 only, which is not good at all.
Does anyone have the same/similar problem?
What is the best solution for dealing with this kind of problem?
Is there any registry setting to disable this software volume (if it is) ?
Thanks
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