[alsa-devel] Verifying mixer dB data/Invalid dB data from USB cards, especially Aureon 5.1 MkII
broonie at opensource.wolfsonmicro.com
Wed Feb 17 14:32:52 CET 2010
On Wed, Feb 17, 2010 at 02:15:48PM +0100, Lennart Poettering wrote:
> I wonder if we could harvest this in some way from the Windows
> drivers? Does Windows care about the dB data at all? Maybe one could
> extract this information from their .inf files or so, if they store it
It could well be, for this sort of stuff grovelling around in the MSDN
driver kit documentation will normally turn something up.
> I wonder where they get that data from and what they do with broken
> hardware like the Aureon... Now I wished I had access to a Windows
> machine to figure that out...
IME this is dealt with by the manufacturer providing a driver, a device
specific driver will bind in preference to a class driver and with
Windows it's much more normal to ship a device specific driver along
with the device. I've no knowledge of Windows audio drivers, though.
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