Hello Aaron, Thanks for the Ambisonic Toolkit (ATK) <http://www.ambisonictoolkit.net> call out.
Replying to this: A practical problem is that forward NFC filters have infinite gain at DC. > Jerome Daniel's solution is to have a reference decoding distance for > Ambisonic program material, say 1 meter -- In the encoder, you encode and > then decode for speakers at 1 meter (which produces finite gains at DC). > Then in the decoder, the NFC filters correct for the ratio of the reference > and actual distance to each loudspeaker. Many authors refer to the "reference decoding distance" as the *reference radius*. At this time there doesn't appear to be any agreement as to what that should be. I seem to recall that Daniel has recommended 1.5 meters, but don't have the reference immediately at hand. On the vaporware front, HOA is coming to the SuperCollider <https://supercollider.github.io/> version of the Ambisonic Toolkit (ATK) <http://www.ambisonictoolkit.net/>. We're planning to use 1.5m as our standard for reference radius, though, users may change this as desired. My best, Jo *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. -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20190610/8c0ce232/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.
