DSS80: Cannot Hear Audio Playback Through Speakers (191964)
The information in this article applies to:
- Microsoft Digital Sound System 80 1.0
This article was previously published under Q191964 SYMPTOMS
When you connect the Microsoft Digital Sound System 80 (DSS80) hardware
to your computer's Universal Serial Bus (USB) port, you may not hear audio
playback through the speakers.
CAUSE
This behavior can occur if the USB data transfer process between your
computer and the DSS80 hardware is not synchronized.
NOTE: This behavior can occur if other USB devices are working properly.
RESOLUTION
To resolve this issue, contact your computer manufacturer to inquire about
correcting the timing of the USB frame rate on your computer.
MORE INFORMATION
All USB data exchanges are initiated by the computer. Data is exchanged
inside frames with a uniform duration of one millisecond. A special data
packet called Start Of Frame within each frame signals the beginning of
the frame.
Some USB host controllers, particularly those using the Open Host
Controller Interface (OHCI), cannot support the data transfer necessary to
support streaming audio. Contact your computer manufacturer to inquire
about the configuration specific to your computer.
Devices such as mice and joysticks use small, infrequent data exchanges
which are not affected by frame rate timing. Streaming audio, such as CD
audio, requires guaranteed access to the USB and relies on proper frame
rate timing to receive information correctly.
| Modification Type: | Major | Last Reviewed: | 7/25/2001 |
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| Keywords: | kbenv kbHardware kbprb KB191964 |
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