Hello, Thanks a lot for so valuable comments and active discussions.
While, possibly I did not give a clear explanation of my problem before. therefore, I would like to show the problem again more clearly. I am starting to research on 3D audio reproduction using two/three loudspeakers. therefore, I began with build up a real-time 3D sound reproduction system with two loudspeakers, based on binaural technique (HRTF, BRIR, etc.). Basically, we can reproduce 3D sound by simply convlving signal and HRTF, the synthesized signal in this way is OK for listening using headphone. While, when presenting this synthesized signal using loudspeakers, the spatial sensation will be distorted, because of the cross-talk problem. Thus, we must design cross-talk cancellation algorithms to recover the spatial sensation even if using loudspeakers. I am now confusing how to implement an efficient cross-talk cancellation algorithm for this application. In fact, I did one cross-talk cancellation, while it cannot effectively work. Therefore, I am now consulting you whether anyone can show some more comments on this issue, and share some source code for this technology. Thank you so much. Best regards, Junfeng 2011/2/25 Marc Lavallée <m...@hacklava.net> > It is similar: The Carver C-9 is cancelling one occurence of cross-talk by > mixing in to each channel a delayed inverted copy of the other channel, > while the RACE algorithm cancels the following cross-talk occurences > recursively because the mixed delayed inverted signals must also be > cancelled... > > Le 24 février 2011, Robert Greene a écrit : > > In detail, I think, yes it is different. > > It is designed for a certain angle and distance > > which are different at least from RGs stereo dipole > > where the speakers are close together in front of the listener. > > But I do not see any reason why the whole thing could > > not be easily programmed up. After all, any analogue > > (determanistic) process can be digitally modeled > > as accurately as one wishes. > > > > I am unaware whether anyone has done it. > > It is fun to play the Sonic Hologram--I pull mine > > out every one in a while, > > > > Robert > > > > On Thu, 24 Feb 2011, Peter Lennox wrote: > > > Is it so different from Ralph Glasgal's ambiophonic cross-talk > > > cancelling? Dr Peter Lennox > > > > > > > > > School of Technology, > > > Faculty of Arts, design and Technology > > > University of Derby, UK > > > e: p.len...@derby.ac.uk > > > t: 01332 593155 > > > w: http://sparg.derby.ac.uk/SPARG/Staff_PLX.asp > > > ________________________________________ > > > From: sursound-boun...@music.vt.edu [sursound-boun...@music.vt.edu] On > > > Behalf Of Michael Graves [mgra...@mstvp.com] Sent: 24 February 2011 > > > 22:16 > > > To: Surround Sound discussion group > > > Subject: Re: [Sursound] cross-talk cancellation used in binaural sound > > > reproduction > > > > > > I have a Carver C-9 Sonic Hologram unit that I bought on Ebay for about > > > $80. It's a nice little demo piece, but limited in its application. > > > > > > That said, it's biggest problem is noise. Of course it's all analogue > > > and built around -10 dbm levels. And all those capacitors are now very > > > old. > > > > > > Has this sort of thing evern been implemented in code, like a VST > > > plug-in? Ideally it would be nice to have it available within the > > > plug-in architecture of the Logitech Squeezeserver that we use for > > > casual audio playback. There are even limited implementations of room > > > correction done in that manner. > > > > > > Michael > > > > > > On Thu, 24 Feb 2011 10:15:40 -0800 (PST), Robert Greene wrote: > > >> I suppose that someone ought to mention-so I shall-- > > >> the Carver Sonic Hologram. > > >> You can still find the devices around(they were > > >> crosstalk cancellation processors). > > >> They work really well, if you do not > > >> mind sitting really still in one spot > > >> (which of course you are going to have > > >> to do for any such system with only two speakers). > > >> And the nice thing is the Sonic Hologram sounds good- > > >> it does minimal damage to the music. > > >> > > >> It is interesting--sort of tells you where the industry was > > >> and still is on surround and so on--that Martin Colloms > > >> writing about the Sonic Hologram in HiFiNews > > >> says that it definitely makes stereo better [and potentially > > >> much better] but that it is just too much trouble... > > >> > > >> Robert > > >> > > >> _______________________________________________ > > >> Sursound mailing list > > >> Sursound@music.vt.edu > > >> https://mail.music.vt.edu/mailman/listinfo/sursound > > > > > > -- > > > Michael Graves > > > mgraves<at>mstvp.com > > > http://www.mgraves.org > > > o713-861-4005 > > > c713-201-1262 > > > sip:mgra...@mstvp.onsip.com > > > skype mjgraves > > > Twitter mjgraves > > > > > > > > > > > > _______________________________________________ > > > Sursound mailing list > > > Sursound@music.vt.edu > > > https://mail.music.vt.edu/mailman/listinfo/sursound > > > > > > _____________________________________________________________________ > > > The University of Derby has a published policy regarding email and > > > reserves the right to monitor email traffic. If you believe this email > > > was sent to you in error, please notify the sender and delete this > > > email. Please direct any concerns to info...@derby.ac.uk. The policy > is > > > available here: http://www.derby.ac.uk/LIS/Email-Policy > > > _______________________________________________ > > > 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 > > > > -- > Marc > _______________________________________________ > Sursound mailing list > Sursound@music.vt.edu > https://mail.music.vt.edu/mailman/listinfo/sursound > -------------- next part -------------- An HTML attachment was scrubbed... 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