Absolutely - there speaks the voice of long experience. Never, never blindly trust labels on cables. If you do, sooner or later they'll turn round and bite. Labels help vastly but always run test signals to check things to be sure. Incidentally, Trinov make a 3-d mic system that is specifically designed for making acoustic measurements including, most importantly for this discussion, loudspeaker positions. See http://www.trinnov.com/technologies/3d-microphone/ . If you can measure the speaker positions directly (and have the time before the gig!) that avoids the need to get the labels right since,assuming you can route signals flexibly in your source system, you can just get everything right there.
If you don't want to do the acoustic measurements, just get the loudspeaker positions, a similar job can be done with cheaper, unmatched, electrets spaced more widely so that simple time-of-flight measurements can be used rather than acoustic analysis as I belief Trinnov are doing. That way you've only got the connections to the measurement system to get right to ensure you've gotten the speakers connected appropriately for your purposes. Dave On 19 November 2016 at 12:50, David Pickett <d...@fugato.com> wrote: > In order to check that everything is correct, despite one's impeccable > logic in imagining a virtual transformation matrix between how one thinks > the signals should be numbered and the reality of the specific situation, I > recommend that everyone have a test recording that identifies each > channel. With this it is relatively easy to check and correct, while > avoiding total confusion. > > David > > At 14:21 17-11-16, Peter Lennox wrote: > >I once spent two days trying to understand the mapping of a 32 > >(periphonic) speaker rig, as there were 3 different speaker numbering > >'conventions' in use, by 3 different parties: one used > >counterclockwise numbering of 'slices' - middle, top, bottom, another > >used a similar system but clockwise, and another used weird kind of > >helical 'start at the top, downwards in stripes', kind of system. Each > >party thought their system was logical and obvious, so it didn't need > >documenting. > >Trying to understand what was actually wired to what was a comical > nightmare. > > > >Dr. Peter Lennox > >Senior Lecturer in Perception > >College of Arts > >University of Derby, UK > >e: p.len...@derby.ac.uk > >t: 01332 593155 > >https://derby.academia.edu/peterlennox > >https://www.researchgate.net/profile/Peter_Lennox > > > >-----Original Message----- > >From: Sursound [mailto:sursound-boun...@music.vt.edu] On Behalf Of Dave > Malham > >Sent: 17 November 2016 11:10 > >To: Surround Sound discussion group <sursound@music.vt.edu> > >Subject: Re: [Sursound] Speaker numbering > > > >Your second layout is what I always tended to do when I had control of > >the numbering but when working in a venue other than your own you often > don't. > >Personally, I'm not sure about "standards" for something as variable > >as a multispeaker array since I would ALWAYS want to check that they > >really, really were connected to the standard - I have been caught out > >too many times over the years :-( > > > > Dave > > > >PS Actually, I would usually check my own rig, just in case someone > >had played silly buggers with the leads since last time I used it. > >Like I said, been caught out too many times.... > > > > > >On 16 November 2016 at 22:12, Augustine Leudar <augustineleu...@gmail.com > > > >wrote: > > > >> How do you number you arrays - there seems to be two ways I've come > >> across.. Using the example of an octophonic array The first way seems > >> to be circular : > >> > >> 1 2 > >> 8 3 > >> 7 4 > >> 6 5 > >> > >> The other way is as follows : > >> > >> 1 2 > >> 3 4 > >> 5 6 > >> 7 8 > >> > >> There doesnt seem to be an standard way of doing this - I was curious > >> as to how other sursounders number their speakers ? > >> -------------- next part -------------- An HTML attachment was > >> scrubbed... > >> URL: <https://mail.music.vt.edu/mailman/private/sursound/>> > attachments/20161116/493aaff8/attachment.html> > >> _______________________________________________ > >> Sursound mailing list > >> Sursound@music.vt.edu > >> https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe > >> here, edit account or options, view archives and so on. > >> > > > > > > > >-- > > > >As of 1st October 2012, I have retired from the University. > > > >These are my own views and may or may not be shared by the University > > > >Dave Malham > >Honorary Fellow, Department of Music > >The University of York > >York YO10 5DD > >UK > > > >'Ambisonics - Component Imaging for Audio' > >-------------- next part -------------- > >An HTML attachment was scrubbed... > >URL: > ><https://mail.music.vt.edu/mailman/private/sursound/attachments/201611 > >17/5bf90225/attachment.html> > >_______________________________________________ > >Sursound mailing list > >Sursound@music.vt.edu > >https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe > >here, edit account or options, view archives and so on. > > > > > >The University of Derby has a published policy regarding email and > >reserves the right to monitor email traffic. > >If you believe this was sent to you in error, please reply to the > >sender and let them know. > > > >Key University contacts: http://www.derby.ac.uk/its/contacts/ > >_______________________________________________ > >Sursound mailing list > >Sursound@music.vt.edu > >https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe > >here, edit account or options, view archives and so on. > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, > edit account or options, view archives and so on. > -- As of 1st October 2012, I have retired from the University. These are my own views and may or may not be shared by the University Dave Malham Honorary Fellow, Department of Music The University of York York YO10 5DD UK 'Ambisonics - Component Imaging for Audio' -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20161119/bdc26fc6/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
