Dick Duda and Ralph Algazi gave a talk and demo at a San Francisco AES meeting at Dolby Labs a few years ago. At that time, they were recording with a head-sized sphere with either 8 or 16 microphones around the equator. They imagined that 8 would be used for teleconferencing and 16 for music recording.
The headphones used a Polhemus tracker to determine orientation. At low frequencies, multiple mics were processed to produce the ear signals and at high-frequencies (where spatial aliasing on the sphere becomes a consideration) they simply selected the closest microphone to the each ear location. Then generic pinna filtering was applied to improve front-back discrimination. The immediate impression is the externalization and solidity of the image. There is some more recent material here: http://www.ece.ucdavis.edu/binaural/ By the way, when Dick was at SRI, he occupied my current office or the one next door. At that time, he was working on vision for Shakey the robot, and co-authored with Peter Hart the classic text _Pattern Classification and Scene Analysis_. Aaron (hel...@ai.sri.com) Menlo Park, CA US On Sat, Dec 28, 2013 at 1:13 PM, dw <d...@dwareing.plus.com> wrote: > http://www.google.com/patents/US20040076301 > > > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20131228/61313efb/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
