JBL and HK have Logic 7 because they and Lexicon are all part of the Harman International group. I very much doubt that the Cirrus chip does the L7 decoding -- that code is proprietary to Lexicon and they have not shown any interest in licensing it outside their group. Interestingly it appears as though the new Mark Levinson processor ($40K) will not have L7 even though it was originally on the feature list.
I've often wondered about this. If you poke thru the datasheet for the Cirrus CS49300 family of DSP chips, it lists Logic 7™ as one of the supported formats. See
http://www.cirrus.com/design/products/overview/detail.cfm?d=45 I haven't read the whole thing (it's waaaay over my head) so I'm not sure exactly what "support" means.
[This message has been edited by Ellen (edited February 15, 2002).]
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