[linux-audio-dev] Re: Any interest in DVD-Audio?

Fons Adriaensen fons.adriaensen at skynet.be
Mon Mar 14 18:32:32 EST 2005


On Tue, Mar 15, 2005 at 09:29:49AM +1100, Erik de Castro Lopo wrote:

> The paper referenced is this one:
> 
>    http://sjeng.org/ftp/SACD.pdf
> 
> by Lipshitz and Vanderkooy, two absolute *GIANTS* in the field of digital
> audio theory and practice.

Indeed they are. Thanks for that pointer.

> > First of all, most of current A/D and D/A converters are delta sigma
> > modulators. 
> 
> Yes, but from what I've heard, with modern delta-simga converters, 
> the minimum bit width is 4 bits, not one bit.

That's right. One-bit converters are 'out'.

> They *may* be some advantage here in that you can pay for a very 
> expensive PCM -> SACD converter at the mastering stage and the 
> playback system becomes simpler.

There's little value in simplicity if you spoil it by adding encryption
and DRM.

-- 
FA



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