[EMAIL PROTECTED] wrote:
>
> On 6 Mar 2000, Stainless Steel Rat wrote:
>
> Hi,
>
> Don't want to stop an interesting thread, but...
>
> > [...]
> > | Yeh but you don't want to emulate an ATRAC chip, you wana encode data to
> > | ATRAC standard natively on a PC using a PC processor & software taking
> > | advantage of chip specific features.
> >
> > Yes, and that requires many fast fourier transformations (FFTs) per second,
> > which as I said before are slow on general purpose processors. ATRAC 4 in
> > real time is just not going to happen on the desktop for a while for that
> > reason.
>
> I guess Sony is never letting this to happen. I mean, to provide
> specifications in order to implement such a encoder. Neither Sony or
> others, I'd swear.
>
> You're missing another point: I guess that if you send data at
> 2X/3X/4X to the MD, it will have to spin faster while recording; that
> implies greater power consumptions, and higher accuracy, so modifications
> to the MD hardware must be done anyway, and a standalone device won't be
> very practical without a specific MD device that could handle this. And
> forget about having that in portables without prohibitively rising its
> price...
Hmm...
I don't know for recording, but I know that for reading, the disc spins at
(least)! 4x. This in order to keep the 10s or more memory buffer filled!
Cheers,
Ralph
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