[EMAIL PROTECTED] wrote:
>
> > If that were the case, then you would be able to encode MP3 streams that
> > sound as good as ATRAC 4 (which they do not) in real time on your desktop
> > (which you cannot at this time). As I mentioned previously, a Pentium II
> > running at 400MHz is capable of turning SPDIF into 128Kbps MP3 in real
> > time, if it is not doing anything else. The particular machine in question
> > is a 64Mb system with fast/wide SCSI (so, no bottleneck there), using LAME.
> > 128Kbps MP3s do not sound nearly as good as ATRAC 4, so I have to say that
> > the computational loads are not comparable.
>
> Well, FWIW, I can do realtime at 128, 192, and 256kbps with the 8hz-mp3
> encoder on my Alpha (21164A, 533MHz, UW-SCSI), but that still doesn't mean
> that the computational load is "light" by any stretch.
Hmmm,
so here's my humble opinion.
1) The Alpha is about 4 times faster at the same clock-speed than a Pentium
class
CPU....
2) ATRAC is dedicated hardware. Compare it to the 3D graphics interface in
your PC. If you didn't have it, you wouldn't be able to sustain 70fps
with your favourite 3D game.
ATRAC has changed but not dramaticly after version 3.0. The CPU's in
PC's have. There will be and there will come a time when CPU's can
do the ATRAC encoding in real time. Maybee this time has already
arrived?
3) Why is a 128kbit encoding faster than the 384kbit encoding? The
data that needs to be trown away at 128kbit is 3 times more than at
384kbit.
Cheers,
Ralph -> never decoded or encoded a MP3 in his live..
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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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