Re: gentle noise (was: (Offtopic) Humming on ibook2 audio port?)
On Sat, 12 Jan 2002, Siggi Langauf wrote:
> I usually don't boot that machine at all, but today I got the chance, and
> I can verify that it produces the same noise in MacOS X. The patterns are
> a bit different, but that's due to the different hd access
> characteristics...
Well, that's good news (I guess....if unwanted hum/noise is good news at
all :-P).
> Hmm, that would probably kill some high-frequency part of the audio
> spectrum as well, but maybe there's a chance to do better than Apple ;-)
I doubt it...at least not without having some extra equipment and software
that I don't have (TI has some software to help with determining biquad
filter settings for the TAS, but I think it costs $$$). I'll start with
Apple's settings and see what I can figure out from there.
> Yup, they suck, even with iTunes' "small speakers" profile, they used to
> sound, well, small...
Hehehehe...yeah. I found that they sound a bit "tinny" due to a lack of
real bass (no hollow space behind the speaker doesn't help). Oh, well...I
guess I didn't expect much from the speakers anyway, hence me carrying
headphones in my laptop bag :-P
> Resetting the chip sounds like the right thing to do, though I don't
> actually know what I'm talking about ;-)
:-P Actually, I think it is the right thing to do. I didn't see anything
about power saving in the TAS manual, so I'm guessing that a reset would
be proper. I'll take another look anyway to see if there's anything else
that can be done.
> Note that I only get such noise effects in one out of 10...20 sleep/wake
> cycles, so it's not easy to reproduce...
That may be why I haven't seen it locally yet. Then again, I don't put
mine to sleep too often.
C
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