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  #51  
Old September 29th 03, 07:24 PM
dorothy.bradbury
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(snip - sorry, busy changing hosting & ISPs re Sven still)

Yes - correct.

No, I too don't like the "subjective loudness"
For engineers it's a variable constant which they tend not to like :-)

It comes from...
o Perception of low noise levels is poorly modelled by dB(A)
o Perception of the /components/ of low noise levels being poorly modelled
by dB(A), yet can be more important than absolute sound pressure level

A classic example of the latter is two PWM solutions: 1-2kHz & 10-20kHz,
whilst their dB(A) figures may be identical - the perception is not
identical.
--
Dorothy Bradbury


  #52  
Old October 7th 03, 11:26 AM
Q
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Baffie - typed:
It ain't a problem for me as I've got my power settings shutting down
the HD after 10 minutes of inactivity, saves power, saves wear and
tear and prevents heat/noise.


I went down the route of quietening down my PC by purchasing a Zalman Cu
Flower Cooler, NB passive HS QPC sound deadening kit & running the
exhaust fan at 7V. Most of the noise comes from 2 WD1000JBs. Choosing
burners or anything else without tiny fans also helps.

I got over-zealous by also having my discs power down after a preset
time but noticed an unacceptable stuttering while XP waited for them to
spin back up, so disabled it. Going from a steel to Al Lian Li case also
helped temps & noise. The 2 inlet fans blow into my 2 h/ds & I have
their 3 speed switch set to low. At least WD are now going to introduce
h/ds with fluid bearings - about time too! At least my PC is totally
silent in Standby mode.



 




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