I was showing off a second order brahma microphone at the AES los angeles in 2016, I had two versions (I think I took only one) one is a standard octagon, the other was an octagon with the top half rotated 45 degrees, which looks remarkably like Eric Benjamin’s Octathingy. Both used 14 mm capsules. I have since built two other designs. One is a tetrahedron surround by a ring of four, and the other similar, but the ring is tangential capsules. I will probably end up using only the octathingy style. But in the meantime, I have been seduced by all digital MEMs based second order microphone outputting directly to USB. MEMs are Omni, so I am flush mounting them on a polished acrylic sphere 1.5 cm radius. I will post photographs on my facebook Brahma page soon.
By the way I visualize the octathingy as two tetrahedron superposed, one rotated 180 degrees. umashankar Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for Windows 10 ________________________________ From: Sursound <sursound-boun...@music.vt.edu> on behalf of Len Moskowitz <lenmoskow...@optonline.net> Sent: Wednesday, March 28, 2018 4:53:15 PM To: Stefan Schreiber Cc: Sursound List Subject: Re: [Sursound] Core Sound Announces OctoMic - First 2nd-orderAmbisonics Microphone Stefan Schreiber wrote: > At first sight I could not tell anything about the difference between > an OctaThingy and Octomic capsule mount. > Even not at second... > > Could you give me/us some hint? Eric's OctaThingy is based on a tetragonal trapezohedron. OctoMic is not. It's based on another geometric solid. The angles are different. Len Moskowitz (mosko...@core-sound.com) Core Sound LLC www.core-sound.com<http://www.core-sound.com> Home of TetraMic and OctoMic -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20180328/2de8d80b/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/20180328/fec46398/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.
