The difference lies in how accurately the ear masking is modeled. By Sony's
own admission, ATRAC was not as accurate as possible, so other methods
provided better sound for the same bit rate. I don't know the specifics
about who or what however.

"chris" wrote in message
news:svprb.152398$Tr4.405825@attbi_s03...
hello I'm trying to understand ATRAC and ATRAC3 and how is it better or
worse than the other digital methods.
Ive done a goodle but I seem to get buried in the marketing hype. Can any
experts in this subject matter please help me understand this stuff.

Thanks in advance Chris.