In article <4qjoeb...@decaxp.HARVARD.EDU>, "Gabe M. Wiener" <g...@pgm.com>

They have explained that they are interpolating more bits
somehow. They only are not talking about what kind of algorhythm they
are doing it with.

I think AA is too small a company to be able to afford the several
years of secret development and non-disclosure agreements that
preceeded most of the AES papers and explainations you are referring
to.

The Apogee UV-22 and Meridian noise-shaping technology were both
derived from previous academic research. Neither company has told
anybody HOW they do what they do, only that they are accomplishing
what the academic research suggested might be do-able ten years
ago. There hasn't been a comparable public feasability discussion
preceeding the AA work however I can't see blaming that situation on
Audio Alchemy.

It would be interesting to compare a 20 bit recording with an
interpolated 20 bit result from the same recording reduced to 16
bits. Hopefully I can get some time to try it.

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