Marc, This is very interesting to me. Did you do this using Wi-Fi or some other wireless scheme?
What I've been seeking is a low-cost, low-latency wireless solution for a headset. We have good, full-bandwidth solutions for wireless microphones. Also for wireless performance monitors. Nothing that combines these functions. Michael Graves mgra...@mstvp.com http://www.mgraves.org o(713) 861-4005 c(713) 201-1262 sip:mgra...@mjg.onsip.com skype mjgraves -----Original Message----- From: Sursound <sursound-boun...@music.vt.edu> On Behalf Of Marc Lavallée Sent: Tuesday, May 28, 2019 7:20 AM To: sursound@music.vt.edu Subject: Re: [Sursound] Deconstructing soundbar marketing B.S. Last year I hacked a "low latency" (~100ms) stereo RTP streaming software between OSX and a Raspberry Pi. A possible solution would be, as Bo Erik suggested, to stream 4-channel on a musticast wifi network, then decode it on 4 RPIs (or similar boards), making sure they are in sync (using PTP). This is on my long list of things to try, but I would need a specific project to kick-start this exploration. I'm in the process of setting up a 4-channel system in my home office (using two 2.1 DIY "multimedia" system), so it's a good start. We could wait for the industry to provide something usable, but it would be proprietary, "professional", and expensive (because of the super-specific gold-plated hardware, patents, shareholders, marketing, logos, slick web sites, religious beliefs, etc). Also (who knows) maybe it's already possible to do it using the jack2 software suite. Marc Le 28/05/2019 à 07:40, Augustine Leudar a écrit : > Weve tried local wifi networks at shows before but it was a bit > unreliable for droppouts etc then again so is Bluetooth. FOr home us it would > be fine. > Four plug sockets might be a bit more doable than audio cables as well. > Wasn't there someone on here who was doing something DIY with the > rasberry pie ? Anyway it would nice to bring something commercially viable to > market. > > On Tue, 28 May 2019 at 09:39, Bo-Erik Sandholm <bosses...@gmail.com> wrote: > >> The Speakers won't be wireless as you probably want them to be powered. >> >> But it should be easy with bluetooth 4.0 or Wi-Fi direct to create a >> solution. >> >> Normal Wi-Fi could be used. >> The low cost esp8266 makes this possible in a diy setup... >> >> Stream a 4 channel audiostream to the 4 speakers. >> Have a switch on each speaker to select which channel it will playback. >> >> Could possibly be solved by streaming 2 stereo channels on 2 >> different ip ports over WiFi instead. 😎 >> >> Bo-Erik >> >> >> >> Den tis 28 maj 2019 09:50Augustine Leudar <augustineleu...@gmail.com> >> skrev: >> >>> wow : >>> >>> https://youtu.be/KrVGTqRftKY >>> >>> Problem is as most engineers know the result of room reflections is >>> generally comb filtering not increased spatialisation. Even if you >>> could somehow get this to work the time of the reflections would >>> depend on room size, the materials on the wall etc etc. It would be >>> great if someone >> could >>> just invent bluetooth quad (or more) then you could happily just >>> deposit four cable free bluetooth speakers around the room and be >>> done with all this nonsense. >>> >>> On Tue, 28 May 2019 at 08:38, Augustine Leudar < >> augustineleu...@gmail.com> >>> wrote: >>> >>>> Thats interesting - ive always wanted to hear transaural actually >> working >>>> - I've only tried Spat. However this would require the content >> producers >>>> (sound designers) to actually add HRTFs and use software to render >>>> trnasaural filters the same as binaural - and most d not , genrally >>>> its just the same stereo content used on two speakers produced over >>>> a >>> soundbar. >>>> Even a soundbar isnt intelligent enough to decide which sounds >>>> should appear where, marvelous though they are. >>>> >>>> On Tue, 28 May 2019 at 01:55, Aaron Heller <ajhel...@gmail.com> wrote: >>>> >>>>> The soundbars I've heard sound like they use crosstalk >>>>> cancellation >> (aka >>>>> transaural stereo) to achieve surround effects. I believe the work >>>>> of Edgar Choueiri and his students at Princeton represents the >>>>> state of the art >>> in >>>>> that area. >>>>> https://www.princeton.edu/3D3A/index.html >>>>> >>>>> Also Ralph Glasgal, an occasional poster on sursound -- >>>>> http://www.ambiophonics.org >>>>> >>>>> Aaron (hel...@ai.sri.com) >>>>> Menlo Park, CA US >>>>> >>>>> >>>>> >>>>> >>>>> On Mon, May 27, 2019 at 4:43 PM Augustine Leudar < >>>>> augustineleu...@gmail.com> >>>>> wrote: >>>>>> Hi Douglas - >>>>>> I dont think he was referring to Atmos soundbars just Atmos in >>> general . >>>>>> Atmos will of course work nicely being a 9.1 (or is it 11.1 ?) >>>>>> bed >>> with >>>>>> objects operating within that over an unlimited number of >>>>>> speakers >>> (or >>>>> is >>>>>> it 128 max) - as such its true surround (in that the speakers od >>>>> actually >>>>>> surround the litener); . >>>>>> However its not particularily innovative in that it combines >>>>>> stuff >>> thats >>>>>> been around for years - (ambisonics can decode to different >>>>>> speaker >>>>> arrays >>>>>> from one file for example and I assume the objects move around >>>>>> using amplitude panning). Then youve got things like DBAP which >>>>>> have the potential to create far more convincing 3D audio scenes >>>>>> that ATMOS >> and >>>>>> thats been around a lot longer. >>>>>> But no here we just refer to soundbars in general I think. I find >>>>>> it >>>>> very >>>>>> unlikely though that an "ATMOS" soundbar would give the >>>>>> impression >> of >>> a >>>>>> sound being behind the listener than a basical quad setup where >> there >>>>>> actually are two speakers behind the listener. >>>>>> I agree placebo definately plays a role in a lot of spatial audio. >>>>>> >>>>>> On Mon, 27 May 2019 at 22:00, Douglas Murray <dmur...@well.com> >>> wrote: >>>>>>>> On May 27, 2019, at 12:09 PM, mgraves mstvp.com < >>> mgra...@mstvp.com> >>>>>>> wrote: >>>>>>>> See also Dolby Atmos. Yet another triumph of marketing over >>> reality. >>>>>>> Dolby is especially good in that arena. >>>>>>>> Michael Graves >>>>>>> Michael, >>>>>>> >>>>>>> Are you referring to the Dolby Atmos sound bars and ceiling >> bouncing >>>>>>> speakers? If so I agree. But as a film sound designer, I don’t >>> believe >>>>> I am >>>>>>> succumbing to marketing hype when I say that Dolby Atmos in a >> cinema >>>>>>> setting, with its full range surrounds and speakers in what were >>> gaps >>>>> near >>>>>>> the screen, is a real improvement over other earlier surround >>> formats >>>>> for >>>>>>> cinema. Clearly Dolby is trying to generate profits from the >>>>>>> mass >>> home >>>>>>> market rather than only from the small cinema world. It’s >>>>>>> probable >>>>> that >>>>> any >>>>>>> sound bar, whether “Atmos” or not, will be an upgrade for >>>>>>> whomever >>>>> buys >>>>> it, >>>>>>> so happy customers, even if the hype is not lived up to. Maybe >> it’s >>>>> the >>>>>>> placebo effect that makes these things work? >>>>>>> >>>>>>> Doug Murray >>>>>>> _______________________________________________ >>>>>>> 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. >>>>>>> >>>>>> >>>>>> -- >>>>>> Dr. Augustine Leudar >>>>>> Artistic Director Magik Door LTD >>>>>> Company Number : NI635217 >>>>>> Registered 63 Ballycoan rd, >>>>>> Belfast BT88LL >>>>>> www.magikdoor.net >>>>>> +44(0)7555784775 >>>>>> -------------- next part -------------- An HTML attachment was >>>>>> scrubbed... >>>>>> URL: < >>>>> >> https://mail.music.vt.edu/mailman/private/sursound/attachments/201905 >> 28/009dadc7/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. >>>>> -------------- next part -------------- An HTML attachment was >>>>> scrubbed... >>>>> URL: < >>>>> >> https://mail.music.vt.edu/mailman/private/sursound/attachments/201905 >> 27/f7ae4d66/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. >>>>> >>>> >>>> -- >>>> Dr. Augustine Leudar >>>> Artistic Director Magik Door LTD >>>> Company Number : NI635217 >>>> Registered 63 Ballycoan rd, >>>> Belfast BT88LL >>>> www.magikdoor.net >>>> +44(0)7555784775 >>>> >>>> >>> -- >>> Dr. Augustine Leudar >>> Artistic Director Magik Door LTD >>> Company Number : NI635217 >>> Registered 63 Ballycoan rd, >>> Belfast BT88LL >>> www.magikdoor.net >>> +44(0)7555784775 >>> -------------- next part -------------- An HTML attachment was >>> scrubbed... >>> URL: < >>> >> https://mail.music.vt.edu/mailman/private/sursound/attachments/201905 >> 28/31e763be/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. >>> >> -------------- next part -------------- An HTML attachment was >> scrubbed... >> URL: < >> https://mail.music.vt.edu/mailman/private/sursound/attachments/201905 >> 28/2efbf173/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. >> > _______________________________________________ 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.
