Hello Marc, Here's the abstract for a presentation given by Lucas McCauley at the recent 2016 AES INTERNATIONAL CONFERENCE ON AUDIO FOR VIRTUAL AND AUGMENTED REALITY <http://www.aes.org/conferences/2016/avar/>:
USING MEMS MICROPHONES FOR AMBISONIC AUDIO IN A LIVE STREAMING SPHERICAL > VIDEO CAMERA > LUCAS MCCAULEY <http://www.aes.org/events/141/presenters/?ID=5219> > VideoStitch > A few months ago, VideoStitch announced the Orah brand and its Orah 4i, a > live streaming spherical camera, complete with immersive audio. The 4i uses > four lenses and real-time stitching algorithms to produce 4K spherical > video, and four on-camera MEMS microphones to capture first-order > ambisonics. The output can be streamed directly to any platform that > accepts live feeds of immersive content. This workshop explores the design > of the Orah 4i camera’s integrated ambisonic audio capture, from selection > and placement of the microphones, capsule correction EQ, level matching, > omnidirectional to cardioid polar pattern processing, and conversion to > first-order B-format. The final design decisions and several measurements > are shown. See: http://www.aes.org/conferences/2016/avar/downloads/AVAR_Final_Program.pdf The session was described as a "workshop". Calling it a technical briefing would be more accurate. McCauley made the point that the results are intended for "streaming camera" operation. I.e., recording a string quartet isn't the intended application. McCauley's slides had much useful information, particularly regarding issues around the MEMS microphones selected. I would say the they've done the "right thing", given that (as usual!) sound was the last thought of element of the camera design. I don't see McCauley's slides in the AES library. Perhaps they'll be made available at some point.... My best, *Dr Joseph Anderson | Research Scientist* DXARTS, Box 353414 University of Washington Seattle, WA 98195-3680 http://www.dxarts.washington.edu Subscribe to our events list <https://dxarts.washington.edu/mailing-list> to receive email updates about lectures, performances, exhibitions and more. On Thu, Nov 3, 2016 at 7:57 AM, Marc Lavallée <[email protected]> wrote: > I received a new marketing email from https://www.orah.co/ < > https://www.orah.co/> > I think I asked this question before, about the same product; > how 4 MEMs on the side of the camera case can work as an ambisonic > microphone? > > — > Marc > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: <https://mail.music.vt.edu/mailman/private/sursound/ > attachments/20161103/bddc9456/attachment.html> > _______________________________________________ > Sursound mailing list > [email protected] > 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/20161103/059aeb03/attachment.html> _______________________________________________ Sursound mailing list [email protected] https://mail.music.vt.edu/mailman/listinfo/sursound - unsubscribe here, edit account or options, view archives and so on.
