[wdmaudiodev] Re: Why would you want USB Audio 2.0 in Windows?

  • From: Clemens Ladisch <clemens@xxxxxxxxxx>
  • To: wdmaudiodev@xxxxxxxxxxxxx
  • Date: Thu, 19 Nov 2009 08:49:28 +0100

Tim Roberts wrote:
> Clemens Ladisch wrote:
> > And for a purely technical reason: High-speed USB audio devices do not
> > eat as much bandwith on the bus, so they work better together with other
> > devices.
> Well, this statement is not quite accurate.  [...]
> having a full-speed device on a high-speed controller doesn't have any
> more impact than a high-speed device of the same rate.

It still impacts any other full- or low-speed devices on that controller
if there aren't separate transaction translators for each port.

> Further, it's quite possible to have a USB Audio 1.0 device run at high
> speed, as long as your isochronous interval is not smaller than 1 per
> frame.

I wish devices would support high speed.  Have you ever seen such an
audio device (i.e., class-compliant, not with custom drivers)?


WDMAUDIODEV addresses:
Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx
Subscribe:    mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe
Unsubscribe:  mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe
Moderator:    mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx


Other related posts: