I would try another USB3 controller such as Renasas or Fresco. I would try Windows 8 USB3 driver. From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@freelists. org] On Behalf Of Moore Zhang Sent: Saturday, September 29, 2012 7:46 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] Re: There is noise in my audio driver with USB 3.0 controller The controller’s info: ASMedia XHCI Controller, device ID: VID_1B21&PID_1042 发件人: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@xxxxxxxxxxxxx] 代表 Sam Tertzakian 发送时间: 2012年9月29日 0:44 收件人: wdmaudiodev@xxxxxxxxxxxxx 主题: [wdmaudiodev] Re: There is noise in my audio driver with USB 3.0 controller What USB 3.0 Controller are you using? From: wdmaudiodev-bounce@xxxxxxxxxxxxx [mailto:wdmaudiodev-bounce@freelists. org] On Behalf Of Moore Zhang Sent: Friday, September 28, 2012 8:59 AM To: wdmaudiodev@xxxxxxxxxxxxx Subject: [wdmaudiodev] There is noise in my audio driver with USB 3.0 controller Hi Guys: 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? Detail info: 1. AVStream USB audio driver. 2. Audio Device: C-Media CM106 like USB 1.1 asic 3. System: Win7 32 4. Scenario: smooth with USB 1/2 controller port; in some USB 3.0 controller port, there is noisy.