Poor Sound Quality Using TrueSpeech Compression (110881)
The information in this article applies to:
- Microsoft Windows Sound System 2.0
This article was previously published under Q110881 SUMMARY
When playing a file compressed using the Windows Sound System TrueSpeech
compression scheme with the Turtle Beach MultiSound audio card, you may
hear popping or scratchy noises. This is due to a limitation of the audio
card and its Windows driver.
MORE INFORMATION
There are currently two versions of the MultiSound Windows driver: 1.0 and
2.0. Version 1.0 of this driver supports sampling frequencies of 11.025
kHz, 22.050 kHz, and 44.100 kHz. The TrueSpeech compression scheme,
however, uses an 8.00 kHz sample that the driver does not support.
The range of sample frequencies in MultiSound Windows driver version 2.0 is
increased through a process known as frequency dithering. This allows the
MultiSound's built-in Digital Signal Processor (DSP) to contour the
frequencies into a more usable range by filling in the gaps. However, the
process is not compatible with the TrueSpeech compression method.
For further information about the Turtle Beach MultiSound audio card or
the availability of Windows drivers, contact Turtle Beach.
The MultiSound audio card and its Windows drivers are manufactured by
a vendor independent of Microsoft; we make no warranty, implied or
otherwise, regarding these products' performance or reliability.
| Modification Type: | Major | Last Reviewed: | 6/13/2001 |
|---|
| Keywords: | KB110881 |
|---|
|