Help File
Windows driver v2.2
Macintosh driver v2.0

General

Windows OS

Mac OS

Audio Software Notes


 

Troubleshooting in Windows

Audible Interruptions occur on playback or record.

  • Symptoms:  Audible artifacts occur within a recording and upon playback.  The USBPre Control application may also freeze.
  • Cause:  When the USBPre control panel application is visible additional USB communications occur to maintain the status of the LEDs and buttons. These communications have nothing to do with the isochronous transfers of audio data. Technically, they are vendor specific commands sent to the control endpoint, but if they stall they can cause audible artifacts, including skipped audio and noise.
  • Solutions:  Minimize the USBPre control panel.  When the control panel is minimized to the task bar these extra communications are disabled.

Audio recording contains random bursts of noise.

  • Symptoms:  With Win2000 and possibly other OS's random loud bursts of noise will occur when recording audio.  One may also experience audio switching back and forth and additional random clicking and popping.
  • Cause:  Sub optimal OS system settings or Interrupt conflict.
  • Solution:  Optimize Win2000 for background services.  Right Click on the computer icon in the top left corner of the screen and select Properties.  Choose the Advanced tab, press the Performance Options button, and choose to have performance optimized for background services.  Click OK to exit.

USBPre does not initialize if the Windows XP driver is installed

  • Problem:  USBPre does not complete initialization in Windows XP.
  • Cause:  Windows XP may have installed the Microsoft USB Audio driver instead of the USBPre Audio driver.
  • Solution:  Reinstall the Audio driver.
  1. Open the Device Manager: Select Start > Settings > Control Panel and Double click on System.  Select Hardware and then choose Device Manager.
  2.  Update the Driver:  Under Sound and Video Game Controllers choose USBPre Microphone Interface.  Select Driver.  If it is provided by Microsoft press the Update driver button and follow the Wizard.  When windows asks which drivers it should search for choose "Display a list of know drivers...".  The USBPre should appear as an option.  Select this and click next.  Click Yes in the digital signature warning window that appears.
 

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