e.Digital Corporation (fka EDIG)

[cksla]

emit--note the following excerpt however:

A few of the other algorithms
in Table 1 tweaking my intellectual
curiosity include opensource
perceptual coders
MPEGplus and Ogg Vorbis; vector-
quantization pioneer TwinVQ;
and Qdesign’s codec, which
employs parametric encoding
techniques and is used in
Apple’s QuickTime. I’ll probably
skip ePAC, though; Vedalabs
indicates that it’s fallen out of
favor in consumer electronics,
and iBiquity Digital’s compression
derives from the original
PAC algorithm (Reference A).

http://gzzj.com/sender/_data/74935.pdf
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the most current version as of 7/1/02 appears to be PAC v4