[EMAIL PROTECTED] wrote:
>
> ATRAC can never surpass CD quality since it stores less information than
> CD-DA. For the same reasons, equal quality is also theoretically
> impossible, and practically impossible without increasing the bit stream
> allowed (24-bits/sample I believe).
I"m not totaly convinced. ATRAC allows 24 bit datawords.
Sampling a signal results in a datasteam of samples. These samples all
together represent a frequency spectrum. The CD bitstream contains all the
frequencies (even the one with an amplitude of 0!).
ATRAC try's to trow away the frequencies that are inhearable. (Those who're
0 for instance!!!).
So if you have a clear digital signal without noise and just a few frequencies
(less then one fifth of the total frequencies), ATRAC will store this signal
with the same or even higher qualitly as oposed to CD.
I can hear people thinking, ATRAC will allways compress. That's correct, but
remember that in the digital domain, the value '0' is still a value!
Cheers,
Ralph
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Ralph Smeets Functional Verification Centre Of Competence - CMG
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"For many years, mankind lived just like the animals. And then
something happened that unleashed the powers of our imagination:
We learned to talk."
-- Stephen Hawking, later used by Pink Floyd --
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