TIP: Click on subject to list as thread! ANSI
echo: audio
to: MATT ION
from: T OWEN
date: 1996-11-28 02:11:00
subject: Re: CD Standard

-=> Quoting Matt Ion to Steve McTague <=-
 MI> I'd say 96dB range is enough for 99.99% of real-world situations. 
 MI> Most other electronics in the chain will max out at or around 96dB
 MI> anyway, and since the final step (the speakers and the listening
 MI> environment) will generally have significantly less range available, I
 MI> don't think a bit one way or the other would be all that significant. 
The dynamic range of CD is more than adequate for any normal program
material. In fact, most Rock and Blues CDs only use a fraction of that
dynamic range, due to heavy handed compression applied by engineers,
in order to keep the signal level high, and use the maximum resoloution
of the medium. Dynamic range is not the problem with CD; it is the lack
of resoloution.
 MI> Yes.  Nyquist's theorum merely applies to the minimum sampling rate
 MI> that must be used to reproduce a given frequency without aliasing
 MI> (although I'd learned it was exactly a 2:1 ratio -- in other words, a
 MI> 44.1k sample rate permits a maximum 22.05kHz frequency to be sampled).
 MI> It makes no assumptions about the "quality" or overall accuracy of
 MI> the sample. 
Precisely what I would have said if my brain was working properly!
One of my gripes with CD is that there is musical information above
22.05K, and while we may not *hear* it, it does affect the way that
we percieve the music. Take care.
... If it's professional, it isn't Peavey.
--- Blue Wave/DOS v2.20
---------------
* Origin: Computer Castle / 20 Lines / Newton, NH / 603-382-0338 (1:324/127)

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