I can confirm the small sweet spot of the Carver device. (or encoding that way). One really has to measure quite exactly where the speakers are and where one is one's self. But it is pretty cool when it is all dialed in, in spite of the things Ralph (correctly) notes. I still have one around and I put it up every once in a while.
I recall the plastic floppy(small LP) disc insert in Audio, where I first heard it. I shall never forget my first listen to "Dry Bones", with sounds all over the place. What a riot! I and my friends ran out and bought up a whole lot of copies of that issue of Audio to get some extras of the disc insert. Eventually I got the device itself. But that first listen to Dry Bones remains really something. Ah the good old days.... Robert On Sun, 13 Mar 2011, Ralph Glasgal wrote:
Sorry I am a little behind on the latest threads. Bob Carver's Sonic Hologram was a pioneering attempt at crosstalk cancelation. Considering the processors he had to work with, is amzing that it works as well as it did. He once told me that the little box version was the best seller he ever had. After hearing an Ambiophonic demonstration he decided to again include the sonic holography feature in his Sunfire home theater products. But it had the following difficulties. It was not recursive so that it only cancelled the initial crosstalk and not the next crosstalk caused by the first cancellation and so on. It had almost no adjustments for speaker angle and the box did not allow for the speakers to be placed much closer together where the results would have been much better especially for the pinna. It also did cancellation at frequencies where there was no crosstalk to cancel. The result was that the sweet area was small and many users could not really get it working with their speakers and rooms. The Lexicon Panorama mode had similar problems. Ralph Glasgal www.ambiophonics.org ________________________________ From: Robert Greene <gre...@math.ucla.edu> To: Surround Sound discussion group <sursound@music.vt.edu> Sent: Thu, February 24, 2011 1:15:40 PM Subject: Re: [Sursound] cross-talk cancellation used in binaural sound reproduction 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20110313/35e6a04b/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
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