srs labs has developed mda 3d audio which is essentially pcm+x,y,z and supports binaural - or any number of speakers. it is almost ambisonics at the pcm digital level. it is also open source. DTS aquiered srs labs and is developing development tools and a back end to there neox 11.2 system for mda play back. mda is ambisonics object oriented pcm + x,y,z spatial info.it is also backwards compatible with stereo an multi channeel audio so uhj over stereo could still be useful. Chris Boozer
>________________________________ > From: Martin Leese <martin.le...@stanfordalumni.org> >To: sursound@music.vt.edu >Sent: Tuesday, May 14, 2013 12:14 AM >Subject: Re: [Sursound] theatrical ambisonics > > >Iain Mott wrote: > >> These are excellent references, thank you! Curious to know why >> ambisonics and uhj encoding ceased to be used in the 90s? I know nothing >> about digital radio - but is dolby surround or some other surround >> format being used presently in Europe, elsewhere? What is the present >> state of play in surround broadcasting? > >If what I write below is incorrect then I am sure >somebody will correct me. > >Ambisonics (and UHJ) died in the 1980s. >What remains is a few enthusiasts. These >include a few radio producers who broadcast >programmes in UHJ, but they do so without the >support (and often without the knowledge) of >their various managements. Dolby MP would >be a poor choice for stereo transmission >because, unlike UHJ, it is not stereo >compatible. > >Looking at the equipment installed in people's >homes then the only surround format that >currently has a chance is 5.1. One problem is >lack of material. An example of what is >possible was the Hitch Hiker's Guide to the >Galaxy: The Tertiary Phase, broadcast by BBC >Radio 4/Above the Title Productions in 2004. >Two mixes were produced: Stereo and 5.1. >The stereo mix was broadcast via radio, >Internet, and CD. The 5.1 mix was broadcast >via Internet and DVD-Video. > >(I have "The Tertiary Phase" as 5.1 WMA files; >if anybody in interested in them contact me >off-list. I have never been able to play them.) > >The present state of play is that no national >broadcasting organisation is regularly >transmitting in surround. However, a number >of music radio stations are currently >broadcasting in 5.1. National broadcasting >organisations are investigating other surround >technologies, such as Ambisonics (BBC) and >22.2 (NHK, BBC). > >Regards, >Martin >-- >Martin J Leese >E-mail: martin.leese stanfordalumni.org >Web: http://members.tripod.com/martin_leese/ >_______________________________________________ >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/20130516/320a2534/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
