Re: [Sursound] Questions regarding a very early 'Ambisonic' LP
I can't believe there's no one here that could give an opinion to my question. Can anyone say what difference on decoding this pre 1980's record using methods based on post 1980's equations would be? Hi all I have a couple of questions that I suspect may be hard to answer, and that is regarding the encoding of a LP I have. I bought this 'Ambisonic' LP in 1977, but it has a recording date of 25th March 1974. It is on the 'Calrec Audio Ltd' label and clearly states the involvement of the N.R.D.C Now the questions I have are: 1, If this is truly an early Ambisonic recording, could it be an early version of UHJ where Y= (0.3225 +- 0.00855j) instead of what is now used Y= (0.3277) 2, Would there be anyway of checking? 3, If it is, is it possible to accurately decode it? Richard I believe because nothing's impossible Dreaming-Spires: My home for people with 4 ears http://the-quad-blog.blogspot.com/ -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110809/6a60445e/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1391 / Virus Database: 1520/3822 - Release Date: 08/08/11 -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110812/759cbf06/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Questions regarding a very early 'Ambisonic' LP
Hi Richard I don't know the answers - I didn't even realise that there had been a change in the UHJ spec. (It would be good to know the answers if you find out - I've got a fairly early York Ambisonic cassette lurking somewhere that I've yet to hear in surround). I'm just getting round to thinking about a system - after not having time/money for many years. Maybe Soundfield Ltd (the now independent microphone arm of the Calrec company) and see if they can help. They're in Wakefield, West Yorkshire - tech support e-mail is techsupp...@soundfield.com or phone +44 (0) 1924 201089 The current Calrec firm are still in Hebden Bridge - a very impressive facility (a friend of mine did some freelance technical writing for them and arranged to show me round) but they only make large format broadcast mixing desks these days. Every Blessing Tony > -Original Message- > From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On > Behalf Of Richard > Sent: 12 August 2011 16:35 > To: Surround Sound discussion group > Subject: Re: [Sursound] Questions regarding a very early 'Ambisonic' LP > > I can't believe there's no one here that could give an opinion to my question. > > Can anyone say what difference on decoding this pre 1980's record using > methods based on post 1980's equations would be? ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Questions regarding a very early 'Ambisonic' LP
Many thanks for that Tony. You know what, I might nip over to Hebden bridge in the hope there's someone there from the 70's who may know this album (seeing as they released it) Worth a r=try, would love to decode this properly if it did use the early UHJ matrix Richard Hi Richard I don't know the answers - I didn't even realise that there had been a change in the UHJ spec. (It would be good to know the answers if you find out - I've got a fairly early York Ambisonic cassette lurking somewhere that I've yet to hear in surround). I'm just getting round to thinking about a system - after not having time/money for many years. Maybe Soundfield Ltd (the now independent microphone arm of the Calrec company) and see if they can help. They're in Wakefield, West Yorkshire - tech support e-mail is techsupp...@soundfield.com or phone +44 (0) 1924 201089 The current Calrec firm are still in Hebden Bridge - a very impressive facility (a friend of mine did some freelance technical writing for them and arranged to show me round) but they only make large format broadcast mixing desks these days. Every Blessing Tony > -Original Message- > From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On > Behalf Of Richard > Sent: 12 August 2011 16:35 > To: Surround Sound discussion group > Subject: Re: [Sursound] Questions regarding a very early 'Ambisonic' LP > > I can't believe there's no one here that could give an opinion to my question. > > Can anyone say what difference on decoding this pre 1980's record using > methods based on post 1980's equations would be? ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1392 / Virus Database: 1520/3828 - Release Date: 08/11/11 -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110812/64db404e/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Questions regarding a very early 'Ambisonic' LP
Hi The microphone people are now with Soundfield ltd at Wakefield! I'd think they're more likely to know - but it was40 years ago! > -Original Message- > From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On > Behalf Of Richard > Sent: 12 August 2011 17:39 > To: Surround Sound discussion group > Subject: Re: [Sursound] Questions regarding a very early 'Ambisonic' LP > > Many thanks for that Tony. > > You know what, I might nip over to Hebden bridge in the hope there's someone > there from the 70's who may know this album (seeing as they released it) > > Worth a r=try, would love to decode this properly if it did use the early UHJ > matrix > > > Richard > Hi Richard > > I don't know the answers - I didn't even realise that there had been a > change in the UHJ spec. (It would be good to know the answers if you find > out - I've got a fairly early York Ambisonic cassette lurking somewhere that > I've yet to hear in surround). I'm just getting round to thinking about a > system - after not having time/money for many years. > > Maybe Soundfield Ltd (the now independent microphone arm of the Calrec > company) and see if they can help. > > They're in Wakefield, West Yorkshire - tech support e-mail is > techsupp...@soundfield.com or phone +44 (0) 1924 201089 > > The current Calrec firm are still in Hebden Bridge - a very impressive > facility (a friend of mine did some freelance technical writing for them and > arranged to show me round) but they only make large format broadcast mixing > desks these days. > > Every Blessing > > Tony > > > -Original Message- > > From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] > On > > Behalf Of Richard > > Sent: 12 August 2011 16:35 > > To: Surround Sound discussion group > > Subject: Re: [Sursound] Questions regarding a very early 'Ambisonic' LP > > > > I can't believe there's no one here that could give an opinion to my > question. > > > > Can anyone say what difference on decoding this pre 1980's record using > > methods based on post 1980's equations would be? > > ___ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound > > > - > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1392 / Virus Database: 1520/3828 - Release Date: 08/11/11 > -- next part -- > An HTML attachment was scrubbed... > URL: > <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110812/64d b4 > 04e/attachment.html> > ___ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Questions regarding a very early 'Ambisonic' LP
Hmmm, sounds like a good day out, thanks Richard Hi The microphone people are now with Soundfield ltd at Wakefield! I'd think they're more likely to know - but it was40 years ago! > -Original Message- > From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] On > Behalf Of Richard > Sent: 12 August 2011 17:39 > To: Surround Sound discussion group > Subject: Re: [Sursound] Questions regarding a very early 'Ambisonic' LP > > Many thanks for that Tony. > > You know what, I might nip over to Hebden bridge in the hope there's someone > there from the 70's who may know this album (seeing as they released it) > > Worth a r=try, would love to decode this properly if it did use the early UHJ > matrix > > > Richard > Hi Richard > > I don't know the answers - I didn't even realise that there had been a > change in the UHJ spec. (It would be good to know the answers if you find > out - I've got a fairly early York Ambisonic cassette lurking somewhere that > I've yet to hear in surround). I'm just getting round to thinking about a > system - after not having time/money for many years. > > Maybe Soundfield Ltd (the now independent microphone arm of the Calrec > company) and see if they can help. > > They're in Wakefield, West Yorkshire - tech support e-mail is > techsupp...@soundfield.com or phone +44 (0) 1924 201089 > > The current Calrec firm are still in Hebden Bridge - a very impressive > facility (a friend of mine did some freelance technical writing for them and > arranged to show me round) but they only make large format broadcast mixing > desks these days. > > Every Blessing > > Tony > > > -Original Message- > > From: sursound-boun...@music.vt.edu [mailto:sursound-boun...@music.vt.edu] > On > > Behalf Of Richard > > Sent: 12 August 2011 16:35 > > To: Surround Sound discussion group > > Subject: Re: [Sursound] Questions regarding a very early 'Ambisonic' LP > > > > I can't believe there's no one here that could give an opinion to my > question. > > > > Can anyone say what difference on decoding this pre 1980's record using > > methods based on post 1980's equations would be? > > ___ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound > > > - > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1392 / Virus Database: 1520/3828 - Release Date: 08/11/11 > -- next part -- > An HTML attachment was scrubbed... > URL: > <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110812/64d b4 > 04e/attachment.html> > ___ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1392 / Virus Database: 1520/3828 - Release Date: 08/11/11 -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110812/2914a716/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Questions regarding a very early 'Ambisonic' LP
The change to UHJ at that time is very small and was made just to get rid of the need for another phase shifter in the decoder (IIRC). Any of the Classic Decoders, the Integrex, Minims, A&D etc will decode this properly. I for one would be most interested in a copy of the recording as it represents Calrec before I was a padawan. The people who recorded it were my mentors at Calrec and have passed on. ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Questions regarding a very early 'Ambisonic' LP
I haven't done a rip of the album, but once done i'll decode it and add it to my Quadraphonic blog Richard The change to UHJ at that time is very small and was made just to get rid of the need for another phase shifter in the decoder (IIRC). Any of the Classic Decoders, the Integrex, Minims, A&D etc will decode this properly. I for one would be most interested in a copy of the recording as it represents Calrec before I was a padawan. The people who recorded it were my mentors at Calrec and have passed on. ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1392 / Virus Database: 1520/3828 - Release Date: 08/11/11 -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110812/e971199f/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
