🚀 go-pugleaf

In a review of the Vimak DS-2000 DAC in Australian Hi-Fi, the following
statements are made:
"The Vimak accepts up to 24 bits of external audio data. At present, the
standard CD data-stream cannot provide this level of precision, but it
seems likely that that by using presently unused channels on CD's to
encode additional data, 24 bit precision on CD, with no loss of playing
time, and no loss of compatibility, is more than just a possibility, its
a probability. In the US, the smaller specialist record labels are
already investigating the encoding algorithms necessary to perform this
clever trick."
I am seeking comments on these interesting statements, and any further
information that people may have on this. Is this of any relevance to
the current recording pratice of recording at 20-bits and Sony's SBM
process? Is this possibly used in the HDCD process where the New York
Times article stated that the HDCD process samples at several hundred
K samples per second, and 20 bits and then uses some algorithm to get
rid of redundant information? To exploit this potential we may see
completely new DAC's with DSP chips in them like in the Vimak.
  
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| Bill Alford,                            | Email: bill@rsphys.anu.edu.au |
| School Computer Unit,                   | Tel: 61 6 249 2143            |
| Research School of Physical Sciences    | Fax: 61 6 249 1884            |
|     and Engineering,                    |   N    _--_|\                 |
| Australian National University,         | W + E /      \                |
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| Canberra City, ACT 2601                 |             v     [35S, 149E] |
| Australia                  O, what a journey of Discovery we are on ... |
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