[vorbis] Modified discrete cosine transform

[Keith Wright]

I am trying to learn something of the algorithms used in
Vorbis.  One of them is the "Modified Discrete Cosine
Transform" (MDCT).  I have found a couple of books with brief
descriptions of the DCT, but almost nothing about MDCT.
(1) is there just one Modified DCT, which can be
    expected to be the same whenever someone uses that
    name, or does it just mean that you have changed
    the DCT, but any number of people might have changed
    it in other ways and called their own versions MDCT too?
(2) is there a recommended reference for MDCT, assuming
    that name is unambiguous?


-- 
     -- Keith Wright  <kwright at free-comp-shop.com>

Programmer in Chief, Free Computer Shop <http://www.free-comp-shop.com>
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