Speaker Distortion and Noise with USB Speakers at a High Volume (813498)
The information in this article applies to:
- Microsoft Windows XP Professional
SYMPTOMSWhen you play an audio file through your USB speakers, you
may hear distortion such as a popping or crackling noise. This symptom may
occur about every minute when your USB speakers are at a high
volume.CAUSEThis issue may occur if your Intel Mobile Pentium III
processor is using Intel SpeedStep technology. SpeedStep requires that the
processor restart and have its attributes modified several times a second. The
USB sound system relies on a data stream that is reaching codecs at a steady
rate for good playback. This issue occurs when the two processes conflict, so
the data stream is disrupted. This disruption causes the distortion such as a
popping or crackling noise.WORKAROUNDTo work around this issue, turn off the SpeedStep
functionality during the sound session. To do so, set the power scheme to an
non-adaptive mode:
- Click Start, click Control
Panel, and then click Performance and
Maintenance.
- Click Power Options.
- On the Power Schemes tab, click
Always On in the Power schemes box, and then
click OK.
Modification Type: | Major | Last Reviewed: | 2/11/2003 |
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Keywords: | kbprb kbsound KB813498 |
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