You can't make naive predictions on what ambi stereo decode will sound like that; especially when you have j terms. You have to apply the full General Metatheory ...
http://www.aes.org/e-lib/browse.cfm?elib=6827 It should be in Sampo's motherlode too. - Decode the W' X' Y' signals to a speaker layout. A square is convenient for horizontal super stereo predictions. - Apply Michael's equations to get what the listener perceives in the centre. - Do the same at HF according to the Shelf filters. These are particularly important for 2 -> stuff. Only then will everything make sense according to the theories of Bauer, Blumlein ..Franssen ... Strutt, Vanderlyn etc. Note General Meta doesn't use WXYZ in exactly the same way as traditional Ambi theory so be warned. I did a lot of this stuff in Jurassic days, trying to find a better stereo decode but had to admit the WW 77 equations were as good as any and better than most. There are small differences in some Geoffrey Barton stereo decodes to do with some added Forward Preference. This improves 'phasiness' performance for front centre sources but doesn't change the perceived directions. I've applied General Meta .. to 'normal' 2 speaker stereo in the design of my Wharfedale Option 1 & 2 speakers. > I have a question concerning the conversion of a stereo recording to > ambisonics. In the Wireless World of 1977 articles there are equations for > the > conversion of stereo to W,X,Y equivalent signals. The use of j*Diff term > doesn't seem to make sense. As I found no background info on them, maybe > someone in the group has. -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/ms-tnef Size: 2863 bytes Desc: not available URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20120722/271a5df8/attachment.bin> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
