It is surprising, not least because speakers are able to be microphones as well...
Dr. Peter Lennox School of Technology, Faculty of Arts, Design and Technology University of Derby, UK e: p.len...@derby.ac.uk t: 01332 593155 -----Original Message----- From: Sursound [mailto:sursound-boun...@music.vt.edu] On Behalf Of David Worrall Sent: 26 September 2013 05:14 To: Surround Sound discussion group Subject: Re: [Sursound] , ambi playback configution and calibration Hi David, Thanks for your considered response. I _was_ actually thinking of it autolocating the speakers. And not necessarily just for ambisonics, actually. Some sort of a spectrum analyser/preamplifier device that derived the correct decode/gain controls of the real system acccording to the actual location of the loudspeakers, decode algorithm and your preferred listening spot ... and that self-callibrated each time you turned the system on. Given how difficult it seems to be for billions of people to set up a 5.1 system, surely there must be a market? I'm actually surprised that such a device doesn't already exist. Oh well, back to the stone-age method... David On 23/09/2013, at 9:33 PM, Dave Hunt wrote: > Hi, > >> Date: Thu, 19 Sep 2013 21:50:00 +0200 >> From: David Worrall <worr...@avatar.com.au> >> To: Surround Sound discussion group <sursound@music.vt.edu> >> >> Hi All, >> I'm away from my back-up of this list (*) so please forgive if this has been >> answered before, but >> >> Is there - on the market, or in other form - a setup system/tool that auto >> configures a decoder and calibrates an ambisonic playback rig according to >> the (actual) position of the loudspeakers? >> >> thanks, >> David > > Presumably it doesn't have to auto-locate the speakers ?? That would be > clever and probably expensive. > > I have something that was built in MAX/MSP, and can turn it into an > application (Mac OS preferred but Windows is probably possible). It is first > order only, up to 16 speakers, and based on all the info about good decoders > I've found, and can understand and implement. Of course it could be extended > to higher orders, once the maths is thought through and the issue of > different kinds of W. > > Haven't done this as most of the people I'm dealing with don't have enough > speakers to make it worthwhile or essential. It's basically part of something > else which is trying to do all sorts of ambisonic things with 16 inputs from > a DAW running on the same computer. So, until higher powered computers become > affordable in an income challenged age, processing power has to be carefully > used. Increasing the ambisonic order starts to push up the number of audio > streams that need handling in a non-linear manner. Such a decoder needs > listening to, which means that you have to able to generate something to > listen to to assess how well the encode/decode works, something I haven't had > time to do above 2nd order. > > If only there was more time, things got done quicker, or someone was paying > for the work by the hour. > > Ciao, > > Dave Hunt > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20130926/3ad4f0bf/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound _____________________________________________________________________ The University of Derby has a published policy regarding email and reserves the right to monitor email traffic. If you believe this email was sent to you in error, please notify the sender and delete this email. Please direct any concerns to info...@derby.ac.uk. _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
