[wdmaudiodev] Re: There is noise in my audio driver with USB 3.0 controller
- From: Tsai Tzung-Dar <tdtsai1973@xxxxxxxxxxxx>
- To: "wdmaudiodev@xxxxxxxxxxxxx" <wdmaudiodev@xxxxxxxxxxxxx>
- Date: Sun, 30 Sep 2012 18:38:18 -0700 (PDT)
Hi Moore:
I had try it on Win8 use intel USB 3.0 host. There is no noise happen. What OS
you used? Does it also happen when you use Microsoft UAA?
________________________________
寄件者： Moore Zhang <chinahearing@xxxxxxxxx>
收件者： wdmaudiodev@xxxxxxxxxxxxx
寄件日期： 2012/9/30 (週日) 10:10 PM
主旨： [wdmaudiodev] Re: There is noise in my audio driver with USB 3.0 controller
Hi Tim:
Thanks for your info and suggestion, I will try to install a win8 OS and test
the USB 3 port later.
发件人:wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx]
代表 Tim Roberts
发送时间:2012年9月29日0:34
收件人:wdmaudiodev@xxxxxxxxxxxxx
主题:[wdmaudiodev] Re: There is noise in my audio driver with USB 3.0 controller
Moore Zhang wrote:
>I happened to find that when I plug in my USB 1.1 audio device in the USB 3.0
>controller port, there will be noisy when playing music with WMP. But if plug
>in USB 1.1 or 2.0 controller port, always fine. I’m prepared to analyze and
>debug the driver code now, but before that does any guy in this list has
>similar experience of this issue? Should AVStream audio driver make special
>process for USB 3.0?
Prior to Windows 8, the world of USB 3.0 is a jungle, because Microsoft does
not support it. When you use a USB 3 host controller in Windows 7, you are
using a driver stack provided by the host controller manufacturer. No one
knows what rules they followed, or what quality control they used.
There SHOULD NOT be any difference for a USB 2 device plugged in to a USB 3
port, but I know some of my web cameras do not operate in some USB 3 ports, and
I have no explanation for it.
I suggest you try your device in a Windows 8 system with USB 3 and see if it
behaves correctly.
--
Tim Roberts, timr@xxxxxxxxx
Providenza & Boekelheide, Inc.
Other related posts:
