BBC Session 6 MASTER COPY

teddi2002 wrote:

I did a bit of reading in to it, more precisely http://downloads.bbc.co.uk/rd/pubs/reports/1974-29.pdf and http://downloads.bbc.co.uk/rd/pubs/reports/1977-02.pdf, and the "60 degree hack" is clearly documented in the latter report (page 5 and onwards). It is stated to produce slightly better results (closer to original quadraphonic mix) than a simple "proper" linear Matrix H decode.

According to my analysis, neither this share or the 2011 remasters (which should be the same mix) contain any indication of Matrix H encoded material. A pure QS 'logical' decode did produce some interesting results, which could be entirely coincidental as you said, but shouldn't SQ and Matrix H decoding also produce some interesting sounds in that case?

The 60 degree QS thing is a hack. Yes it might have given the best results in 1977 with hardware decoders but things have moved on. My friend decodes things in software, where modern techniques can do much better phase shifts and channel seperation etc. than 1970s analogue hardware could ever achieve.

Good that you agree this is not Matrix H encoded. As I understand it the Matrix H broadcast was a separate remix done by Tony Wilson exlcusively for the Alan Freeman show. We're looking for different master tapes or an off air recording. Whether they still exist anywhere is doubtful.

Why does QS give a nice effect when SQ or Matrix H don't? Just chance based on what is in the original recording I suspect, depending on what is out of phase with what else.

OwenSmith wrote:

teddi2002 wrote:
Indeed. The Golders Green concert is very likely SQ-encoded, as is documented here: http://www.surrounddiscography.com/quaddisc/quadradi.htm#bbcsps and here: http://www.surrounddiscography.com/quaddisc/Queen-BBC%20Presents.mp3.

But I've yet to find any indication or documentation pointing to this recording beeing recorded and broadcast in quadraphonic sound.

The online lists of quad discography are notoriously inaccurate, listing things as quad that aren't and omitting many things that are.

The last time Golder's Green came up I posted a picture in that thread of the BBC transcription disc for that concert. The disc label does not say SQ, so it's not SQ or any other quad encoded. The BBC transcription disc service were very careful about labelling and archives, in many cases the transcriptiom service archives are the only copies that remain at the BBC.

Also my friend who runs the qaud blog I linked to above tried a decode of Golders Green from several sources and could detect no quad encoding.

So I suppose that the announcer is lying about the concert being "broadcast in stereo and compatible SQ quad"? Or you claim that this is a fake announcement?
I think it's very clear that the concert was broadcast in SQ encoded quadraphonic sound - at least in the 1975/09/13 broadcast.
I believe it's unreasonable to claim that 'natural phase shifts' cause the guitar to be panned as accordingly as it is. Phase differences due to mic placement on a guitar amplifier can't phase shift the entire frequency spectrum equally (except for 180 degrees, which is not the case here).

The question now becomes how do we get hold of a recording that is from the 1975/09/13 broadcast and no other source. The best source is the transcription disc but that is not labelled as SQ and doesn't decode.

Can We Get A Re post Please

Not likely as it's been officially released in the meantime. Queen On Air boxset.

Correct. Please buy it