There was a really interesting study which I cant for the life of me find about an listening tests on focussed sources, or sounds appearing inside the array with HOA at IRCAMS facility. Aside from nearly blowing the array up trying to make the sound appear close to the centre of the array they ultimately found they could not get get a sound to appear to be mor ethan one metre inside the (if I remeber rightly) quite large array even at quite high orders. If anyone can find this paper Id be grateful.
On Mon, 22 Apr 2019 at 16:22, Stefan Schreiber <st...@mail.telepac.pt> wrote: > It might be helpful to reflect about the basics: > > If ambisonics is about sound field reconstruction it will work best in > the sweet spot. > > Accordingly it might be better to separate into sweet spot and “area” > applications, > > as different cases. > > (Home/headphone vs. concert/performance applications.) > http://downloads.bbc.co.uk/rd/pubs/whp/whp-pdf-files/WHP254.pdf > > “I hope this helps.” > > Best, > > Stefan > > - - - > > Citando Pierre Alexandre Tremblay <tremb...@gmail.com>: > > > This report is very much in line with my observations too, in the > > concert hall and in optimal studio conditions. I would say that HOA > > start to be usable for focused point source around the 5th order, > > and gets better higher up with the problems of then having the > > speaker setup to fill it… so when it was time for me to write a high > > channel count piece for the BEAST, I opted for a hybrid setup of: > > > > - Third order ambisonic for envelopment and fluffy positioning > > > > - point sources (5:2 + an elevated) for cheats strong positioning > > for everyone* > > > > - a quad of real distant speakers in the far corners** > > > > > > > > Total: 28 channels, that can be rendered in a 8:4 hemispherical > > array at worse, and in optimal conditions, is capitalising on the > > best of all worlds. Quite portable. Obviously, calibration between > > the different setups was needed, is easily done, with the proper > > pink noise bursts. It has been played quite successfully in many > > different settings. > > > > > > > > I hope this helps > > > > > > > > p > > > > > > > > > > > > * because sweet spot still exist in all of them except WFS and even > > that is not super solid) > > > > ** because all of the other are based on being on the sphere, again > > WFS is good for stuff outside the ring but not convenient for many > > other things like spectral flatness... > > > >> On 20 Apr 2019, at 09:08, Augustine Leudar > >> <augustineleu...@gmail.com> wrote: > >> > >> > >> > >> Ps if I remember rightly Peter Stitt may have done some studies > comparing > >> > >> vbap and ambisonics in an octoganal array at sarc you could check him > out. > >> > >> > >> > >> On Saturday, 20 April 2019, Augustine Leudar < > augustineleu...@gmail.com> > >> > >> wrote: > >> > >>> I havent done a study on it but ive done hundreds of compositions and > >>> > >>> installations and the differences are pretty obvious. Ambisonics is > pretty > >>> > >>> good at filling a hole in the panning but vbap can be better under > some > >>> > >>> circumstances. Ambisonics is pretty much useles if you want to say, > makes > >>> > >>> sounds fly round a labarinth of corridors covering a festival > >>> area in which > >>> > >>> case dbap is better suited. Wfs handles focussed sources better. 5-,1 > >>> > >>> strictty speaking is a speaker array so you could have ambisonics > over a > >>> > >>> 5.1 speaker setup. Ive toyed with the idea of doing a study > comparing how > >>> > >>> well tecniques can get sounds to sppear close to a lustener between > wfs , > >>> > >>> ambisonics and dbap but its pointless reslly as its obvious to anyone > who > >>> > >>> uses these things what the results would be.All different tools for > >>> > >>> different jobs. > >>> > >>> > >>> > >>> On Friday, 19 April 2019, Michael Bevers <mbev...@gmail.com> wrote: > >>> > >>>> Hello, > >>>> > >>>> > >>>> > >>>> I'm curious if anyone knows of, or has conducted, any studies > >>>> comparing an > >>>> > >>>> Ambisonic system to a channel-based system? For example, a > comparison of > >>>> > >>>> an > >>>> > >>>> Auro 3-D system with an Ambisonic system. Or even just a 5.1 surround > >>>> > >>>> system with an Ambisonic system. > >>>> > >>>> > >>>> > >>>> I haven't found any studies myself directly comparing the two, even > >>>> > >>>> through > >>>> > >>>> AES. > >>>> > >>>> > >>>> > >>>> Thanks for any help, > >>>> > >>>> Michael > >>>> > >>>> > >>>> < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20190420/28a16e1c/attachment.html > > > >> > >> _______________________________________________ > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > https://mail.music.vt.edu/mailman/private/sursound/attachments/20190422/e173d1fb/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 -------------- next part -------------- An HTML attachment was scrubbed... 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