Hello, The attached papers of mine may be relevant to your question. PCMA, a surround mic technique I proposed and evaluated in the papers does not use multiple ambisonic microphones, but uses 5 pairs of coincident microphones arranged in a spaced array. The purpose is to control perceived front-back perspective (zoom in/out) creating a virtual microphone with a different polar pattern and direction at each pickup point. (see Figure 3 in the 2011 paper). The same technique can be used for surround recording with height (the secondary mic in each pair captures more ambience than direct sound and is therefore routed to a height channel for spatial impression).
Hope this is useful. Hyunkook ========================================= Dr Hyunkook Lee, BMus(Tonmeister), PhD, MAES, FHEA Senior Lecturer in Music Technology Leader of the Applied Psychoacoustics Laboratory (APL) http://www.hud.ac.uk/apl http://www.hyunkooklee.com Phone: +44 (0)1484 471893 Email: [email protected] Office: CE 2 /14a School of Computing and Engineering University of Huddersfield Huddersfield HD1 3DH United Kingdom ________________________________________ From: Sursound [[email protected]] on behalf of len moskowitz [[email protected]] Sent: 18 September 2017 18:05 To: [email protected] Subject: Re: [Sursound] Multiple ambisonic microphone array? Matthew Barnard writes: > Has anyone had any experience of utilising multiple ambisonic > microphones in a spaced array for a recording? We've recommended using multiple TetraMics in spaced arrays to our customers many times, and we mention it on our web site. Perhaps the simplest is an ORTF array, decoding two TetraMics physically spaced 17 cm apart, and each decoded to cardioids angled to an included angle between them of 110 degrees. There's no reason this technique can't be used with other spaced array configurations. Then there's the much more complex possibility of using many TetraMics, uniformly distributed around a space, each dynamically tracking sound sources, and interpolating (handing off) between them as sound sources move around in the space. We know this may be possible. Len Moskowitz ([email protected]) Core Sound LLC www.core-sound.com Home of TetraMic _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on. University of Huddersfield inspiring tomorrow's professionals. [http://marketing.hud.ac.uk/_HOSTED/EmailSig2014/EmailSigFooter.jpg] This transmission is confidential and may be legally privileged. If you receive it in error, please notify us immediately by e-mail and remove it from your system. If the content of this e-mail does not relate to the business of the University of Huddersfield, then we do not endorse it and will accept no liability. -------------- next part -------------- A non-text attachment was scrubbed... Name: 2011_AES130_PCMA_Lee.pdf Type: application/pdf Size: 580742 bytes Desc: 2011_AES130_PCMA_Lee.pdf URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20170918/880f5d44/attachment.pdf> -------------- next part -------------- A non-text attachment was scrubbed... Name: 2012_AES132_PCMA Subjective Evaluation.pdf Type: application/pdf Size: 598656 bytes Desc: 2012_AES132_PCMA Subjective Evaluation.pdf URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20170918/880f5d44/attachment-0001.pdf> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
