A few years ago, I designed a tetrahedral array using 14 mm capsules that is a drop in replacement for the zoom H2N array, With calibration, we sell it as Brahma-in-Zoom, but the shapeways printed part is available for anyone wanting to try.
umashankar Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 From: Eric Benjamin<mailto:eb...@pacbell.net> Sent: Thursday, May 19, 2016 2:55 AM To: Surround Sound discussion group<mailto:sursound@music.vt.edu>; Augustine Leudar<mailto:augustineleu...@gmail.com>; Surround Sound discussion group<mailto:sursound@music.vt.edu> Subject: Re: [Sursound] Zoom H2n firmware update for spatial audio + surround podcast produciton The principle problem with using the ZoomH2n for Ambisonics recording is that the capsules are arranged in such a way that left obstructs right and right obstructs left. This can be seen in the photos on Daniel's web page athttp://www.radio.uqam.ca/ambisonic/images/h2_01.jpg The result of the obstruction is that the polar patterns are severe!y compromised. They can't be modeled as a simple sum of zero and first order components which means that the recovered B-format will have significant errors. Also , the directions of the polar patterns vary with frequency. This doesnt mean that it shouldn't be used, just that it could be better. Any one who is willing to modify could try exchanging the positions of the capsules between left and right. Or changing them to a square configuration. Sent from Yahoo Mail on Android On Wed, May 18, 2016 at 2:06 PM, Augustine Leudar<augustineleu...@gmail.com> wrote: I guess it would be able to position sounds on the horizontal plane, the gap between the capsules means high frequencies with wavelengths shorter than that gap might be a bit off . I do a fair bit of sound design - my opinion is that for stereo theres not much point in trying to create "immersive 3d sound" - Id say a minimum of quadrophonic would be necesary. Of course broacasting surround sound is a great option. Theres loads more that you can do than just ambisonics though . On 18 May 2016 at 17:40, Courville, Daniel <courville.dan...@uqam.ca> wrote: > Brendan Baker wrote: > > >this update now enables the H2N to spit out a 4-channel WAV file somewhat > resembling b-format, minus the vertical channel. > > It is B-Format, ambiX: ACN channel sequence (WYZX), SN3D normalization. > > >My assumption was/is that the orientation of the H2N's mic capsules > wouldn't create a true ambisonic image. > > Why? > > Here's a small recording I did yesterday after updating the Zoom H2n. It's > a street corner in Montreal, just beside UQAM. > > http://www.radio.uqam.ca/ambisonic/audio/mtl-uqam-acn-sn3d.flac > > FuMa version: http://www.radio.uqam.ca/ambisonic/audio/mtl-uqam-fuma.flac > > - Daniel > _______________________________________________ > 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. > -- Augustine Leudar Artistic Director Magik Door LTD Company Number : NI635217 Registered 63 Ballycoan rd, Belfast BT88LL -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20160518/eede9d3e/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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20160518/63283f5b/attachment-0001.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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20160519/9c3e7884/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.
