Re: [Sursound] Directional confusion between different B-format players
How is the Oktava Tetrahedral mike calibrated? In what form are the calibration files? Can you post a copy of the User Manual for it? http://www.oktavausa.com/ProductsPages/Ambient4DMic.html has no info at all. ___ 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.
Re: [Sursound] Directional confusion between different B-format players
I was going to ask the same thing Umashankar From: rica...@justnet.com.au To: sursound@music.vt.edu Date: Thu, 18 Jun 2015 09:24:05 + Subject: Re: [Sursound] Directional confusion between different B-format players How is the Oktava Tetrahedral mike calibrated? In what form are the calibration files? Can you post a copy of the User Manual for it? http://www.oktavausa.com/ProductsPages/Ambient4DMic.html has no info at all. ___ 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. -- next part -- An HTML attachment was scrubbed... URL: https://mail.music.vt.edu/mailman/private/sursound/attachments/20150618/29b26ff4/attachment.html ___ 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.
Re: [Sursound] Directional confusion between different B-format players
I have a problem of directional confusion that depends on which B-format player is used. Well it could be something subtle ... then again it could be one of those classic coding errors ... ;-) Get Aaron Heller's Eight Positions off Ambisonia and massage that through your two bits of software ? If you can't get it, I have my own 26-positions (but you shouldn't need that for a L---R swap problem ... though it will work just as well). I can send a copy. If you can eliminate a coding error ... then it gets interesting ... Michael ___ 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.
[Sursound] Directional confusion between different B-format players
I have a problem of directional confusion that depends on which B-format player is used. I recorded a concert using my Oktava MK-012 4D ambisonic microphone and encoded it to B-format using Brahmavolver. Yesterday, while playing back the recording with the conductor we noticed that under certain circumstances left and right appeared to be swapped. At the time we were trying different virtual mic combinations to improve the clarity of certain divisions of the choir, for ordinary stereo playback. At first I used Harpex B player, because of the useful sound scope display, then, when we had identified a likely mic configuration, I processed the (B-format) files with VVmic using the same mic configuration. What we noticed was that /in most cases/ the stereo files created in VVmic sounded just the same as when we played the recording in Harpex B player, for the same virtual mic configuration. But if the mic configuration was Blumlein (crossed fig-8s at 90°), then in the VVmic-produced files very audibly the sopranos and violins were swapped from the left side of the soundstage to the right side, and other very obvious voices (basses, altos) and instruments (cellos and double basses) were swapped from the right side, where they had been on stage, to the left side. Everything sounds correct for any microphone combination in Harpex B player; everything seems correct also in VVmic except if fig-8s are selected. I would like to base my recording on the Blumlein configuration as the basis, with other reinforcing mics added in. But it is not working for me if I use VVmic (and I can't afford the full version of Harpex). Can anyone explain what might be happening? Gerard Lardner -- next part -- An HTML attachment was scrubbed... URL: https://mail.music.vt.edu/mailman/private/sursound/attachments/20150613/12d0ddd0/attachment.html ___ 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.
