[wdmaudiodev] Re: Writing 24-bit sound at x16kHz
- From: Tim Roberts <timr@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Thu, 05 Mar 2009 13:31:17 -0800
Igor Galchuk wrote:
> Hi, All! I wrote miniport driver (base on PortCls) for my USB device.
> I need write 24-bit sound from my device to file at frequences 8kHz-192kHz.
> I write normal sound on all frequences except 16KHz, 32KHz, 64KHz, 128KHz!
>
What does that mean? What happens at 16k, 32k, 64k and 128k? How are
you testing this? Are you sure you are advertising the capabilities
correctly?
And why on earth would you design a USB audio device that was not USB
Audio Class compliant? Audio drivers are HARD. If you need custom
tweaks, write a usbaudio.sys filter, not an entirely separate driver.
> I use Windows XP Pro + SP2. Is it Microsoft bug?
Almost certainly not.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
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