Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Paul Hodges
--On 27 January 2012 21:24 + Richard wrote: So, could you possibly advise me what changes were made to the Matrix? After a paragraph explaining how four cardioid or hypercardioid microphones can be used to generate W, X and Y by simple addition, the paper goes on: "For pairwise panning

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Richard
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Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Richard
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Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Paul Hodges
--On 27 January 2012 20:20 + Paul Hodges wrote: I might be about to trip up I have, rather. The paper I just linked to ("System UHJ" by P S Gaskell, Sept 1979 - which I now have a copy of) gives the BBC's then current encoding matrix for HJ, which is indeed diffe

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Paul Hodges
--On 27 January 2012 19:57 + Richard wrote: But (and I'm playing devils advocate here) how would that account for the 15 degree offset seen when comparing 'H' and 'HJ' recordings I can't - I've taken a punt as far as I can, and I might be about to trip up! Paul -- Paul Hodges __

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Paul Hodges
--On 27 January 2012 19:01 + Paul Hodges wrote: It could well be that the BBC made no change at all to their Matrix-H encoding as a result of the publication of HJ. H fell within HJ (by intent) and so continued to be acceptable. I have (so far) found just one reference to HJ in the rele

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Richard
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Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Paul Hodges
--On 27 January 2012 19:01 + Paul Hodges wrote: I think it would be pretty safe to assume that all BBC tapes encoded with H are encoded the same, I meant to type "H or HJ", of course. Paul -- Paul Hodges ___ Sursound mailing list Sursound@m

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Paul Hodges
--On 27 January 2012 18:04 + Richard wrote: Again, if it's a tweaked 'H' it had to be encoded. All I'm looking for is that equation. It could well be that the BBC made no change at all to their Matrix-H encoding as a result of the publication of HJ. H fell within HJ (by intent) and so

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Richard
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Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Geoffrey Barton
nnel FM multiplexer for their broadcasts. Geoffrey -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20120127/0c73aec1/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Martin Leese
"Richard" > The thing is that Matrix HJ isn't UHJ, nor compatible with it. That much, > I've discovered. It's only 45J that's "compatible" Why do you think that? The ENcoding zones for HJ are described in Figure 1 (Page 4) of the paper at: http://decoy.iki.fi/dsound/ambisonic/motherlode/source/E

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Richard
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Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Paul Hodges
--On 27 January 2012 15:03 + Richard wrote: > I'm surprised that the altered equation used wasn't ever written down > anywhere. Was there actually a specific altered equation anyway? Given that the definition of HJ used tolerance zones, how would it be have been decided on? Paul -- Paul

Re: [Sursound] Me again - on the H/HJ hunt

2012-01-27 Thread Richard
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