Re: [Sursound] Broadcasting b-format - again

2013-01-26 Thread Jörn Nettingsmeier
On 01/26/2013 08:44 PM, Ross Bencina wrote: On 27/01/2013 6:29 AM, Jörn Nettingsmeier wrote: getting clear line-of-sight to six or more speakers is probably just as hard as wiring them for audio. Does it need to be direct line of site? Maybe infrared ambient light would be OK? as one who ha

Re: [Sursound] Broadcasting b-format - again

2013-01-26 Thread Michael Chapman
> I have implemented a similar thing and had phase-locked audio coming out > of ~20 iPod touches using one enterprise-grade access point. > At Xmas, with multiple iPhone users all playing music on 'loudspeakers' at the same time ... whether one couldn't harness them all and play surround sound ..

Re: [Sursound] Broadcasting b-format - again

2013-01-26 Thread Ross Bencina
On 27/01/2013 6:29 AM, Jörn Nettingsmeier wrote: getting clear line-of-sight to six or more speakers is probably just as hard as wiring them for audio. Does it need to be direct line of site? Maybe infrared ambient light would be OK? Ross. ___ Sur

Re: [Sursound] Broadcasting b-format - again

2013-01-26 Thread Jörn Nettingsmeier
On 01/26/2013 08:09 PM, Marc Lavallée wrote: How about a simple wireless analog trick: http://hackaday.com/2012/08/31/a-laser-audio-transmitter/ http://www.instructables.com/id/Send-Music-over-a-Laser-Beam/ getting clear line-of-sight to six or more speakers is probably just as hard as wiring

Re: [Sursound] Broadcasting b-format - again

2013-01-26 Thread Marc Lavallée
How about a simple wireless analog trick: http://hackaday.com/2012/08/31/a-laser-audio-transmitter/ http://www.instructables.com/id/Send-Music-over-a-Laser-Beam/ -- Marc Ross Bencina a écrit : > On 26/01/2013 11:55 AM, Fons Adriaensen wrote: > > If the speaker input is analog, you'll have a DA

Re: [Sursound] Broadcasting b-format - again

2013-01-26 Thread Ross Bencina
On 26/01/2013 11:55 AM, Fons Adriaensen wrote: If the speaker input is analog, you'll have a DA converter in each receiver. This needs to get its sample clock*from the received data* unless you're prepared to resample the signal after decoding. Since there can and will be significant jitter on th

Re: [Sursound] Broadcasting b-format - again

2013-01-25 Thread Fons Adriaensen
On Fri, Jan 25, 2013 at 08:32:57PM +0100, Sven Thebert wrote: > The main question will be: How can I guarantee that all receiving µCs > work synchronous, or with so little jitter, that the sound image for > the listener doesn't collapse? Thinking a bit more about this, there is another challenge