--------- Original Message --------- Subject: Re: [Sursound] Wireless speakers From: "Marc Lavallée" <[email protected]> Date: 12/17/15 7:34 am To: "Surround Sound discussion group" <[email protected]>
A solution would be to encode all required channels in one multi-channel stream, using the Opus codec, then broadcast this single stream using a multicast IP wifi transmitter (with the UDP protocol to avoid delays), to be received by individual decoders made with small wifi equipped computers (maybe cheap android phones). This is a scheme that would ensure that all receivers get all channels simultaneously, to minimize delays between decoded channels (helped with a precise "world clock" protocol like PTP). I don't know if this specific solution exists (more googling required at this point), but there is one commercial solution partially based on the same idea to transmit distinct stereo streams (instead of one multi-channel stream): http://www.audiotxmultiplex.com/ The latest Chromecast Audio seems like it could be part of a modular solution. It would take some code to piece it together, but ti's pretty accessible. For those proposing RaspberryPi solutions there is the HiFiBerry DAC which comes in analog and SPDIF output versions. It even comes in a version with a 25w onboard amplifier, but I'm not certain what that gets you. If it could be powered over Ethernet, and achieve suitable output levels, that could reduce the cable requirement to one per RPi+amp+speaker. Wireless is never really wireless when power is something other than batteries. Michael Graves [email protected] http://www.mgraves.org o(713) 861-4005 c(713) 201-1262 sip:[email protected] skype mjgraves -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20151217/4ffd7411/attachment.html> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
