Re: [Sursound] cross-talk cancellation used in binaural sound
Ralph Glasgal wrote: It is virtually impossible to get?360 degrees (including height) via earphones. Add head tracking and it's possible. Some folks have been doing that well for quite some time. Len Moskowitz (mosko...@core-sound.com) ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] cross-talk cancellation used in binaural sound
Head tracking is meant to prevent the image from rotating when one moves their head. Normally this type of head tracker only works for the frontal stage angle. But,indeed, you can also use a head postion detector to change the ILD, ITD, and pinna pattern of the signal being listened to as in virtual reality training systems to produce any sound source angle but I don't think this is the topic we are addressing here. If you are listening to a two channel binaural recording via earphones that interfere with the pinna it is unlikely that you will avoid both internalization and poor localization to the sides or rear. The point I am trying to make however, is that the goal of 360 localization is much easier to attain via loudspeakers, be they Ambisonic, Ambiophonic, or WFS with the advantage that 180 degree Ambiophonics is compatible with ordinary two channel media and most microphone arrangements. Ralph Glasgal www.ambiophonics.org From: Len Moskowitz lenmoskow...@optonline.net To: sursound@music.vt.edu Sent: Mon, March 14, 2011 1:23:27 PM Subject: Re: [Sursound] cross-talk cancellation used in binaural sound Ralph Glasgal wrote: It is virtually impossible to get?360 degrees (including height) via earphones. Add head tracking and it's possible. Some folks have been doing that well for quite some time. Len Moskowitz (mosko...@core-sound.com) ___ 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/20110314/494c5f88/attachment.html ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] cross-talk cancellation used in binaural sound
I realize that the discussion is about perfection. But in practice my experience with an Oscar(Sennheiser dummy head) played back through head phones was that things like up and behind off to one side a bit, all around in short, worked really well, on headphones and with the generic pinnae of the dummy. Of course, the clicker signal that they were using is one of the more easily localized things. (Good for dog training too). Still, in musical terms, where absolutely precisely correct location is not really important(you are not trying to shoot down the brass band up and in the rear), it seems to me that this will really work quite well. I know that in theory there are problems. But in practice the clicks were heard where they should have been heard. The way the demo worked was that they would click while on had one's eyes shut. Then one pointed at the direction that the click seemed to come from. Then one opened one's eyes and looked at where the clicker actually was relative to Oscar. It was uncanny how well it worked. OK so this is not hard science with measurement of localization down to a few degrees. But in general terms, it was a goodie. Robert ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
Re: [Sursound] cross-talk cancellation used in binaural sound
Hello, I'm one of those folks, although I hope I'm doing it well. I've been doing some initial tests for an installation that uses ambisonic recordings done with a tetrahedral mic. The B-format signal is then decoded and played over headphones using virtual speakers panned binaurally. I'm also adding a head-tracking device consisting of an iPod Touch running an app that sends the gyroscope orientation to a Max/MSP patch for altering the pitch and yaw of the B-format signal before it's decoded. The localization is far from perfect and not as accurate as with pure binaural recordings but I'm very happy with the results. Also I have yet to further calibrate the mic which will very likely improve the image. Cheers, Hector On Mon, Mar 14, 2011 at 1:23 PM, Len Moskowitz lenmoskow...@optonline.net wrote: Ralph Glasgal wrote: It is virtually impossible to get?360 degrees (including height) via earphones. Add head tracking and it's possible. Some folks have been doing that well for quite some time. Len Moskowitz (mosko...@core-sound.com) ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound ___ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
