On 01/21/2011 10:21 AM, Dave Malham wrote:
Hi Luigi, I'm sorry to say that I don'[t understand this patent at all since there are no mathematical equations or even written descriptions of how your process works - in fact, unless the patent download is missing some vital sections, all it seems to boil down to is "You put some loudspeakers in an acoustically treated room then you feed them with signals that will make a listener at the centre think they hear the sound and its reflections in the appropriate places" - but that's exactly what any competent surround system would do whether Ambisonic, VBAP, 5.1, 22.2 or WFS. Indeed looking figures 2 and 3, the fact that the subsets of speakers shown are all triads coupled with the fact that the patent talks about "vector sums" seems to indicate that VBAP is your preferred method - but that was published by Ville Pulkki well before the date of the patent (1997 was, I think, the first formal publication in the JAES).
i'm reading the patent as "we took existing methods (VBAP, Ambi, Blauert's frequency bands for height perception), stirred, and put them in a market-ready blackbox". my respects for arriving at a market-ready blackbox, that's certainly a respectable achievement. but like dave, i can't quite see what it's really about, and i also arrived at the conclusion that there is likely nothing fundamentally new inside. plus i'm not too interested in blackboxes. but i wish you luck, and i certainly would be interested to hear a demo if you happen to be in germany (or i in italy). musikmesse, maybe?
-- Jörn Nettingsmeier Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487 Meister für Veranstaltungstechnik (Bühne/Studio), Elektrofachkraft Audio and event engineer - Ambisonic surround recordings http://stackingdwarves.net _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound
