Nice response Gus and certainly more gracious than I would have been. Danny
On Jan 25, 2011, at 9:33 PM, Augustine Leudar wrote: > Message: 6 > Date: Sat, 22 Jan 2011 23:56:42 +0100 > From: f...@kokkinizita.net > Subject: Re: [Sursound] Why do you need to decode ambisonic/b format > > > First, don't try and send HTML to this list, as you can see it will > be removed. > > Sorry - I dont know what you mean - as far as Iknow I haven't sent any > html to this list (at least not intentionally) - I assume you don't mean > links as there was no link in my original message and > there are also many links in the messages on this list. > > > Your question reveals that you have not even started to study and >> understand Ambisonics theory - the answer would be quite evident >> in the other case >> > > Obviously - or I wouldnt be asking how it works..... I do however have a > lot of experience creating 3d soundscapes (in fact its my job) and have > spent a reasonable amount of time studying a wide range of psychoacoustic > topics and other areas pertaining to sound art. Now Ive read a bit more it > is certainly something I will be persuing. > > > . You could as well ask a engineer why he needs >> complex numbers while you can do your bookkeeping without. >> > > Engineers ? bookeeping ? I think I know what you mean. > > Hoping you will eventually have a go at it, >> > > I will absolutely be having a go at it - the replies I received here has > led me to a flurry of reading - the result is I am now utterly intrigued by > ambisonics and cant wait to try it out the more I read the more I get sucked > in - I even found myself trying to unravel the maths last night - that might > take a while...) . I only got so far but as I understand it it uses sound > pressure levels and phase differences to plot x,y,z spherical coordinates > which are then reconstituted in the decoding - out of curiosity Why the need > for the w coordinate - cant the sound pressure level be gleaned from the x,y > and z ? At the moment the soundscapes I am working on are large jungle > soundscapes in a large indoor tropical conservatory ( covering several > acres) - perhaps with twenty metres between speakers. Because of the > problems of amplitude panning and the sheer size of the installations often > sounds are localised by using real world object analogues (ie if a monkey is > meant to sound like it comes from behind a certain tree there is a speaker > with a monkey noise behind that tree)a thunderstorm is represented by a > stereo pair high on a hillside - we even had neighbours thinking there was > real thunderstorm happening and it does sound well, realistic (don't take my > word for it you can read the public response here : > http://augustineleudar.110mb.com/Hd/Hod.html ) . This type of localisation > has proved extremely effective and don't think that any system no matter how > clever at fooling the human ear can improve upon a sound actually coming > from the direction its meant to (though recording ambisonically probably > would) . Where ambisonics could help in the installation is the insect > noises - at the moment there are large 4 speaker areas with 4mic recorded > insect noises . Gaps in the image are plugged with other speakers with say > cicadas on them - despite the doubts expressed here it also has been > effective perhaps because insect noises are high frequency and the leaves > on the bushes and trees disperse the sound filling out the sound field. > Generally the effect is pretty similar to being in the rain forest- except > you don't get bitten. However if what I have read about ambisonics is true > it would make it sound even better and there is always room for improvement > . I am currently trying to translate some of these sound installations to a > format that can be listened to at home - I have to admit 5.1 is a bit > frustrating so ambisonics might hold the key. What I would like to know is > can the decoding be done with software and then burnt to wav files ? There > is no way a physical decoder could be in the biome - we generally have to > throw speakers away or sell them on ebay after a few uses because of the > ants and humidity (wav players are in sealed plastic boxes) . Are there > any ambisonic panners that are VST compatible (I mainly use Nuendo and MAx > MSP) ? Could I design a horizontal surround sound DVD using ambisonic > software for panning and localisation - and then burn 6 wav files and > release it on a 5.1 DVD which could be played on a normal home system ? > best, > Gus > > >>> -- > FA > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110126/b08d7757/attachment.html> > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound Danny McCarty Monolith Media, Inc. 4183 Summit View Hood River, Or 97031 415-331-7628 541-399-0089 Cell http://www.monolithmedia.net/ http://www.danielmccarty.com/ _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
