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High order ambisonics testing
Axon
post Jul 12 2005, 20:08
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Are there any freely available samples of 2nd- or 3rd-order ambisonic recordings?
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HotshotGG
post Jul 12 2005, 20:31
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QUOTE
Are there any freely available samples of 2nd- or 3rd-order ambisonic recordings?


Not that I know of unfortunatly biggrin.gif. It's to my understanding that ambisonic recordings can only be made using a Soundfield Microphone (a lot of recording engineer's are starting to buy these). It's very distinct in the way in which the microphone works seeing that it takes into account a X,Y,Z, and W axis seperatly.


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Axon
post Jul 12 2005, 20:38
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QUOTE (HotshotGG @ Jul 12 2005, 02:31 PM)
QUOTE
Are there any freely available samples of 2nd- or 3rd-order ambisonic recordings?


Not that I know of unfortunatly biggrin.gif. It's to my understanding that ambisonic recordings can only be made using a Soundfield Microphone (a lot of recording engineer's are starting to buy these). It's very distinct in the way in which the microphone works seeing that it takes into account a X,Y,Z, and W axis seperatly.
*


Those are mikes for B-format, which is 1st-order. 2nd order requires 9 mikes. 3rd order requires 16.
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HotshotGG
post Jul 12 2005, 20:51
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QUOTE
Those are mikes for B-format, which is 1st-order. 2nd order requires 9 mikes. 3rd order requires 16.


I understand now, isn't their also a G-Format too? I know about the B-format but the lines after that are kind of blury. The G-Format doesn't require a seperate decoder correct? It's definitely the future for surround, but it's bad enough the average user doesn't even use 5.1 setup correctly.

This post has been edited by HotshotGG: Jul 12 2005, 20:58


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Axon
post Jul 13 2005, 21:19
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OK, uh... short of 2nd-order recordings, is anybody aware of any B format stuff?
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HotshotGG
post Jul 13 2005, 21:56
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http://www.cantares.on.ca/cds.htm I was browsing around and this is all I could find unfortunatly huh.gif. I will keep searching though. It's very easy to find software related to ambisonic and research, but recordings are hard to come by biggrin.gif


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Axon
post Jul 14 2005, 22:10
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Nice! Thanks.
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kempfand
post Jul 15 2005, 14:54
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QUOTE (Axon @ Jul 13 2005, 12:19 PM)
is anybody aware of any B format stuff?
*


Alan Parsons Project's Stereotomy is UHJ encoded (Ambisonics), which is 3-2-3 matrxied 1st order horizontal-only Ambisonics (that is W,X,Y only, but having the Z-information won't help you unless you have a suitable 3D decoding rig and speaker setup).

Also, most of Nimbus Records CD's are UHJ encoded, and they decode beautifully when using a UHJ decoder. Nimbus recently also released a DVD-A series, which has the Ambisonics decoded sound on it: Nimbus DVD Music
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