On 10/15/2015 02:35 PM, Augustine Leudar wrote:
Possibly ambisonics is different - but not all multichannel audio uses ambisonics - certainly with vbap for example if your speakers are wide apart you don't want a big gap when panning between them then wider dispersal would be advantageous if the speakers are very close together I could see it would introduce coloration when the directivity of the speakers overlapped - with wavefield synthesis the smaller the gaps between speaker cones the higher frequencies can be succesfully spatialised - so I guess for wfs more "pinpoint" directivty would be preferred - I may also be wrong ! For creating true walk around 3d soundscapes with no sweet spot for me a useful tool would be a driver which would be a sphere which put out sounds in all directions (360) - because thats how sound often propogates in real space (eg a twig cracking up a tree will not just put out sound in the 180/90 degree space on one side) The dispersal pattern of speakers isnt often considered when building these kind of systems so its an interesting topic !
Speakers with "narrow dispersal patterns" do not exist. All speakers are near-omni in the bass. What a narrow pattern gives you is a longer throw of the HF, which can be useful in traditional sound reinforcement.
But in massive multichannel environments, overly directional speakers will add up to a muddy, bass-heavy diffuse field. I'd always go for as wide a coverage angle as possible, unless I have to deal with a really huge space. Since you can't avoid off-axis sound, at least make it spectrally balanced.
-- Jörn Nettingsmeier Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487 Meister für Veranstaltungstechnik (Bühne/Studio) Tonmeister VDT http://stackingdwarves.net _______________________________________________ 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.
