[wdmaudiodev] usb descriptors for multichannel speaker configuration

  • From: Robert Dalton <bob@xxxxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Wed, 18 Dec 2019 18:43:54 -0800

I'm trying to get a custom USB device to show up as a 7.1 speaker device
using the Windows 10 usb inbox driver.  Currently the device is recognized,
but the speaker configuration is blank (see attached image).  There is only
1 audio format supported, 8ch @ 48kHz.  Is there something specific that is
needed in the USB device descriptors to enable this?  Some applications are
able to output to the device correctly, but others fail to play audio.  My
assumption is that it is because of the missing speaker configuration.  Any
ideas?

Thanks.

Bob

[image: image.png]

PNG image

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