for me, this is where ambisonics (or surround sound) really comes in. we have been recording dry (even with blumlein) and hoping the speakers at home will create enough 'ambience' of some kind. one reason we are forced to do this is because in the real world reverberation is three dimensional; it rarely comes from the same direction as the primary sound. in stereo, the reverberation has to be reproduced in the same direction as the primary sources and from nowhere else. a stereo recording done from the 'best seat' is distant and overly reverberant. done with a first order A format and even approximately decoded to an eight speaker system, the reverberation is natural (the recording as whole sounds like it did on location.) i have been recording with my home build zoom+tetrahedral microphones for over two years now, and have an eight speaker system (100 watt digital amplifiers, but 4 inch 50 watt full range loudspeakers in sealed boxes -cost is the primary concern). the recor dings have been of folk music (mostly in rajasthan) classical (sarod) and semiclassical vocal north indian music, and locations have varied from a 15th century temple to the India International Centre lawns. apart from clean reproduction of reverberation, i note the speakers do not have to put out much power - compared to the same recording converted to stereo and played from a conventional pair of speakers. is this a dataset that could sell ambisonics? umashankar
i have published my poems. read (or buy) at http://stores.lulu.com/umashankar > Date: Wed, 18 Apr 2012 19:48:34 -0700 > From: gre...@math.ucla.edu > To: sursound@music.vt.edu > Subject: Re: [Sursound] audio point / audio plenum > > > It is interesting how this more or less obvious point- > that localizing discrete sources and localizing all the(often multiple( > reflections that make up the whole spatial impression would be > one supposes related--has escapted the popular press especially > of the "High End" ilk. > > They are all wound up about "soundstage" versus "image" > and claim eg that Blumlein stereo does image but it is spaced omni that > does soundstage and so on. > > Apparently it has not occurred to people that if you > blur things enough to create "spaciousness" artificially > you will also blur the direct images, too. And the other way around > that if you reproduce where everything is correctly, > you will also reproduce where all the reflections come from. > > That being said, there is some issue in stereo recording > about creating the illusion/impression of diffuse field, > which of course is considerably more than half the sound > heard at natural audience locations in a concert hall. > Most of the time the diffuse field is inadequately represented > in the recording--they are far too dry in effect through being too close-- > so that one ends up trying to synthesize them from the listening room-- > which of course comes out all wrong, if one is trying to get > a sound like a big hall. Thus one ends up with things like Bose > direct/reflecting and dipoles used not to reduce side wall reflections in > the listening room so much as generate back wall reflections and so on and > on and on, "soundstage" descriptions ad nauseum. > > > Robert > > > On Thu, 19 Apr 2012, J?rn Nettingsmeier wrote: > > > On 04/18/2012 11:38 PM, Peter Lennox wrote: > >> ....I wasn't kidding! - the higher the order, the better you can > >> control spatial imaging / de-imaging. > >> > >> I know we normally think that increased directional resolution > >> corresponds to improved pin-point images, but thinking of it the > >> other way around - increased directional resolution corresponds with > >> with decreased 'accidental phantom imaging' is alsp true > > > > absolutely. and i'm happy to welcome you as a honorary whippersnapper among > > the ranks of the HOA snobs conspiracy :) > > > > -- > > J?rn Nettingsmeier > > Lortzingstr. 11, 45128 Essen, Tel. +49 177 7937487 > > > > Meister f?r Veranstaltungstechnik (B?hne/Studio) > > Tonmeister VDT > > > > http://stackingdwarves.net > > > > _______________________________________________ > > 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20120419/8bef851a/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
