10 Nov
2006
10 Nov
'06
2:21 p.m.
Carlo Capocasa wrote:
I think it could be the cpu fan. If you've an AMD with Cool 'n Quiet (or
something similar) the fan adjust its speed according to the cpu usage.
Have you tried to experiment with the pc chassis opened?
Hope this helps.
c.
Methinks there
is Somewheres (note the forced plural!) in your hardware
setup one or more pieces with bad shielding and/or bad grounding. The
problems might not be limited to cabling - they could be something
inside your hardware.
Me thinksesss this beesss precioussss advicessssss.
A possible candidate - your fireware audio
interface w/ microphone
pre-amp. It may be originating the hum in the first place, and the mic
pre-amp makes it really loud.
I have the same problem going over the internal sound card, and it is
more intense there. The odd part is, the lower the latency, the more
intense the hum; and even weirder, I CAN EVEN HEAR THE HUM WHEN THE
COMPUTER IS HOOKED UP TO SPEAKERS THAT ARE TURNED OFF. So you can
actually hear the hum; it's just that whatever sound adapter is hooked
up, firewire or interal, amplifies it.
First I thought it was hard drive noise; but I tried putting Jack's
tempfiles on a ram disk and that had no effect.
Could it actually be that the CPU itself is causing electromagnetic
effects because it has to work so hard?
Curious.
Carlo
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www.cesaremarilungo.com
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