The UHJ Discography can be found here
http://web.archive.org/web/20110513234453/http://members.cox.net/surround/in
dex.htm

A new site is in the works and should be complete in about a month

-----Original Message-----
From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu]
On Behalf Of Sampo Syreeni
Sent: Monday, March 05, 2012 6:42 PM
To: Surround Sound discussion group
Subject: Re: [Sursound] Me again - on the H/HJ hunt

On 2012-01-25, Eero Aro wrote:

>> I know the BBC did broadcast some of the Proms in either H or HJ, 
>> it's a real shame there's nobody I could contact at the BBC who might 
>> have more info. It's another thing that needs archiving, or it'll be 
>> lost forever
>
> It's a pity taht the Ambisonic Discography is down.

I've said it before (in-between one of my long rants), but I'll say it 
again: most likely most matrix encodings, whether active or passive, 
could be recognized blindly with the proper digital signal processing. 
I've never tried it, but there is plenty of theory to support it, and in 
more than one way.

For example, if you can ever lock onto a single source which gives out 
even a single, sustained harmonic which slides slowly enough in 
frequency, it is possible to calculate the local form of the transfer 
function from the source to the recording from there. Or if you ever 
know some source is impulsive enough, it's possible to use it as a 
bootstrap for multichannel deconvolution, where reverb is an aid to 
detection, instead of a hindrance. And so on.

I've never done it, but it's eminently doable. I wouldn't be surprised 
if it was doable, with whole pieces, to the level of identifying 
individual encoding circuits, or at least their faults, instead of just 
encoding standards. I mean, we have a *stupendous* amount of prior 
knowledge available about what music seems like when viewed through 
mathematical-statistical indicators, whereby seeing which kind of a 
system they went through before landing in our hands as an encoded 
version ought to be a rather straight forward (if modelling and 
computation intensive) problem.
-- 
Sampo Syreeni, aka decoy - de...@iki.fi, http://decoy.iki.fi/front
+358-50-5756111, 025E D175 ABE5 027C 9494 EEB0 E090 8BA9 0509 85C2
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