Re: [Sursound] Flux Ircam Tools
Keep an eye out for "specials" Sometimes Ircam Tools go on sale for half price. Cheers, Haig On 11/10/2012 1:41 AM, Dave Malham wrote: Spat has supported B format for quite a long time and is (or at least was - I haven't used it for a decade or so) quite a nice piece of software, but I do think it's rather expensive at around a 1000 Euros. Dave On 10 October 2012 15:25, Moritz Fehr wrote: Hi List, do you have experience with the Flux Ircam Tools? I am especially interested if it is possible to work in Spat using B-Format. Regards, Moritz -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121010/37cf9c3b/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Uniformity of hemispherical LS layout
On Wed, Oct 10, 2012 at 08:03:04AM +0200, Fabio Kaiser wrote: > So my concern is with finding a uniform distribution of points > on a hemisphere. Assuming L available points my approach of > checking uniformity is that: > > - Making an educated guess of a L-point distribution on hemisphere > - Mirror down to southern hemisphere to get a full sphere point distribution > LS > - Compute Spherical Harmonic matrix Y with order N <= sqrt(LS)-1 > - Compute condition Number, k = cond(Y'*Y) > - If k is close to one, the distribution is quite uniform A valid approach, the only problem is when you truncate the actual implementation to the 'above the horizon' speakers things won't work as expected. Even if you want to reproduce only sources with positive elevation you need speakers with negative elevation, not the full down hemisphere, but some. At least if the result has to be 'Ambisonic'. You can compare creating a source image between some speakers to interpolation in the time domain. The simplest way is linear interpolation, just use the two nearest samples. In the spatial domain this corresponds to pairwise panning (2D) or VBAP (3D). Ambisonics OTOH is similar to 'constant bandwidth' interpolation. This requires more samples than just the nearest ones, i.e. below the horizon speakers even for a hemisphere. Apart from that, a simple way to get good and very practical (but slightly suboptimal in the number of speakers required) 3D layouts is to use rings at specific elevations. The number of speakers required in each ring is proportional to the cosine of the elevation. For example, a system using (bottom to top) 1 + 6 + 8 + 6 + 1 speakers (the rings of 6 at +/- 45 degrees) will do 3rd order 3D perfectly. You can leave out the nadir and zenith speakers if you don't have significant sources there, this requires only minor changes to the decoder. Ciao, -- FA A world of exhaustive, reliable metadata would be an utopia. It's also a pipe-dream, founded on self-delusion, nerd hubris and hysterically inflated market opportunities. (Cory Doctorow) ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] WANTED -Soundfield SPS200 or other portable Soundfield microphone system
Hi all. I'm looking to buy a soundfield mic for a self-funded on-going ambisonic project. In an ideal world I would love to go and treat myself to a ST450 with all of the bells and whistles but unfortunately that is just not an option. If any of you guys have any kit gathering dust that you might like to part with, please get in touch. All the best Dan Andrews -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121010/f8d81c15/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Trans-Dimensional Portal
an academic duel to the death over facebook - swashbuckling stuff ! On 10 October 2012 18:20, Martin Leese wrote: > Carsten Bohn wrote: > > >>It has sort of got lost in the melee. > ... > > This list has an amazing "side-effect", which is > > : getting to know "new words & things" that I > > haven't heard as off now, > > f.e. "M?l?e" : which Google translates in german > > to something like "fray in naval warfare? !? > > My English dictionary gives, "mixed fight, or > crowd". I was trying to convey the idea of a > disorganised fight. > > Given the accents (which I omitted because I > can never remember how to do them on my > keyboard) the word was probably borrowed > from French. > > 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 > -- 07580951119 augustine.leudar.com -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121010/6e1aef65/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] A different portal
Here is a different portal, this one in the UK and made from rubber: http://www.jay-harris.co.uk/tag/ambisonics/ Maybe two sound portals so close together was a fluke, or maybe this the the killer app for Ambisonics. 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
Re: [Sursound] Trans-Dimensional Portal
Carsten Bohn wrote: >>It has sort of got lost in the melee. ... > This list has an amazing "side-effect", which is > : getting to know "new words & things" that I > haven't heard as off now, > f.e. "M?l?e" : which Google translates in german > to something like "fray in naval warfare? !? My English dictionary gives, "mixed fight, or crowd". I was trying to convey the idea of a disorganised fight. Given the accents (which I omitted because I can never remember how to do them on my keyboard) the word was probably borrowed from French. 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
Re: [Sursound] Flux Ircam Tools
Spat has supported B format for quite a long time and is (or at least was - I haven't used it for a decade or so) quite a nice piece of software, but I do think it's rather expensive at around a 1000 Euros. Dave On 10 October 2012 15:25, Moritz Fehr wrote: > Hi List, > > do you have experience with the Flux Ircam Tools? I am especially interested > if it is possible to work in Spat using B-Format. > > Regards, > Moritz > > > > -- next part -- > An HTML attachment was scrubbed... > URL: > <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121010/37cf9c3b/attachment.html> > ___ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound -- As of 1st October 2012, I have retired from the University, so this disclaimer is redundant These are my own views and may or may not be shared by my employer Dave Malham Ex-Music Research Centre Department of Music The University of York Heslington York YO10 5DD UK 'Ambisonics - Component Imaging for Audio' ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
[Sursound] Flux Ircam Tools
Hi List, do you have experience with the Flux Ircam Tools? I am especially interested if it is possible to work in Spat using B-Format. Regards, Moritz -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121010/37cf9c3b/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Trans-Dimensional Portal
It definitely behoves you to remain among us Carsten (=; On 10 October 2012 11:29, Carsten Bohn wrote: > It has sort of got lost in the melee. Try: >> >> http://mur.mu.rs/?p=560 >> https://www.facebook.com/**TransDimensionalPortal<https://www.facebook.com/TransDimensionalPortal> >> >> Regards, >> Martin >> > > This list has an amazing "side-effect", which is : getting to know "new > words & things" that I haven't heard as off now, > f.e. "Mêlée" : which Google translates in german to something like "fray > in naval warfare³ !? > > So, even though I thought of cancelling my subscription to this list, I > decided to stay, cause the "learning effect" is just too > valuable to stay away from ;-) > > with best regards from Hamburg/Germany > Carsten > > -- > Carsten Bohn > BigNoteMusic > Bogenstr.52, 20144 Hamburg/Germany > fon : 0049 - 40 - 420 97 98 > fax : 0049 - 40 - 420 96 47 > email : c...@bignote.de > website: http://www.bignote.de > fansite: http://www.bohn-musik.de > __**_ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/**mailman/listinfo/sursound<https://mail.music.vt.edu/mailman/listinfo/sursound> > -- 07580951119 augustine.leudar.com -- next part -- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20121010/f714de6b/attachment.html> ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] Trans-Dimensional Portal
It has sort of got lost in the melee. Try: http://mur.mu.rs/?p=560 https://www.facebook.com/TransDimensionalPortal Regards, Martin This list has an amazing "side-effect", which is : getting to know "new words & things" that I haven't heard as off now, f.e. "Mêlée" : which Google translates in german to something like "fray in naval warfare³ !? So, even though I thought of cancelling my subscription to this list, I decided to stay, cause the "learning effect" is just too valuable to stay away from ;-) with best regards from Hamburg/Germany Carsten -- Carsten Bohn BigNoteMusic Bogenstr.52, 20144 Hamburg/Germany fon : 0049 - 40 - 420 97 98 fax : 0049 - 40 - 420 96 47 email : c...@bignote.de website: http://www.bignote.de fansite: http://www.bohn-musik.de ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
