CD remastering (was Preservation of Correspondence - And Media)

[Stan Barr]

Hi,

Jim Leonard said:
> Joachim Thiemann wrote:
> > On 07/02/07, woodelf <bfranchuk at jetnet.ab.ca> wrote:
> >> William Donzelli wrote:
> >> *$#@!*   You have not read the fine print on the CD format.
> >> (Too low a sampling rate )
> > 
> > I don't think the sampling rate of CD's is too low.  
> 
> Exactly, the sampling rate is fine.
> 
> Now, the amplitude... that is indeed not enough.  There is an audible 
> difference between 16-bit and 24-bit recordings in the quiet parts. 
> Thankfully, DVD-Audio and SACD have both addressed that.

Another problem is the digital to analog transition.  Most cd players
use sharp cut-off "brick-wall" filters to remove the digital steps from
the d2a converter.  This type of filter is notorious for large amplitude 
and phase shift swings near the cut-off frequency.  At least one firm
made money by taking Sony cd players and installing their own electronics
with lower slope and thus "cleaner" filters, allegedly with good results.

There is a classic computer connection, one of the firms was Linn who 
funded the development of the Rekursiv computer and the Lingo 
programming language back in the '80s.
 
-- 
Cheers,
Stan Barr  stanb at dial.pipex.com

The future was never like this!