On Tuesday, April 2, 2002, at 09:29 PM, H. S. Teoh wrote:
At first I thought it was due to bad hardware, or perhaps
broken/incompatible sound drivers; but one day, I got an idea
and ran the
following program:
It is bad hardware. The kernel puts the CPU into low-power mode
when idle (see another poster's description of no-hlt). The
sound hardware on your machine is not electrically isolated
enough, so you can hear these state transitions. This is fairly
common.
If the distortion is happening post-amp (doubtful), you can turn
up the volume and use an external attenuater to soften it to
sane levels.
Alternatively, move the DAC outside of your computer case.
Relatively good USB audio devices are available for around $140
(ThinkGeek happily sold me one). Optical, Digital output to an
external amp will sound good, too.
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