| Search | Login/Register
   Home » Playback Listening » The open project: a lateral cross-injection. (25 posts, 2 pages)
  Print Thread | 1st Post |  
Page 2 of 2 (25 items) Select Pages:  « 1 2
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  Preamplifiers: keys to mystery. (Lamm L1, L2)..  In analog domain...  Audio Discussions  Forum     2  44700  11-14-2004
10-20-2018 Post does not mapped to Knowledge Tree
rowuk


Germany
Posts 229
Joined on 07-05-2012

Post #: 21
Post ID: 25131
Reply to: 19195
Cross Phase or simply head correct?
When listening to stereo, we initially have 4 images to deal with. Th right speaker to the right ear, the right speaker to the left ear, the left speaker to the right ear and the left speaker to the left ear. Broader images can be made when we “cancel” the cross talk. Most of the attempts to do so had such serious problems elsewhere that the experiment could not be considered valid.
We can at least partly “cancel” cross talk. Polk Audio did this acoustically many years ago. Bob Carver made his contribution electrically with “sonic holography”.
I do not know of any real high quality experiments but rereading this thread gives me some ambition to try. The initial L-R and R-L will be created acoustically. The speakers will be located about an ears width from the main speakers and I will play with level. Perhaps there is something to learn here and it is certainly cheap enough.


Whenever I feel blue, I start breathing again.
10-20-2018 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,157
Joined on 10-12-2006

Post #: 22
Post ID: 25132
Reply to: 25131
Attempts to Correct Presentation
Robin, there have been many and varied attempts to present a "realistic", "3-D" version of recorded music.  The late Jame Bongiorno adamantly insisted that it could not be done with two channels, and he came up with his Trinaural Processor to "correct" the problems.  This device takes into account just what you mentioned about the R/L/L/R thing, with an algorithm that directs  a "scaled" combination of R & L to a center channel and "scaled" amounts of R to L & L to R.  There isn't much of worth out there about this device, but I cynically suppose anything gained is offset by electronic "issues".  Another "problem" is that original recordings might be... anything, so any given fixed "treatment" might have any sort of final outcome one could imagine, even without other variables.


Paul S
10-20-2018 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,157
Joined on 10-12-2006

Post #: 23
Post ID: 25133
Reply to: 25132
The Art of Memory
(with apologies to Giordano Bruno)

OK, had I re-read this entire thread from the top before posting again (above) I would likely not have repeated myself.  However, IMO, this subject is not thought about nearly enough going in, at the recording end, to make for a simple, one-size-fits-all fix.  I'm thinking as I sit here typing that "Sound" and "Presentation" are juxtaposed.


Paul S
10-20-2018 Post does not mapped to Knowledge Tree
rowuk


Germany
Posts 229
Joined on 07-05-2012

Post #: 24
Post ID: 25134
Reply to: 25132
The desired result?
Paul,at least from my moronic standpoint, using a couple of closed boxes with wide band drivers (I have some JBL LE-8T2 without the aluminum domes) in a L-R/R-L connection, should give me the power to widen the stereo basis. Adjustable level could make the amount of widening fine tunable based on the recording. I have pretty much an equilateral triangle between the listening spot and the speakers so I get somewhere around 60° now.

If it works as intended, this could be my injection channel...


Whenever I feel blue, I start breathing again.
10-20-2018 Post does not mapped to Knowledge Tree
Paul S
San Diego, California, USA
Posts 2,157
Joined on 10-12-2006

Post #: 25
Post ID: 25135
Reply to: 25134
If It "Works",
then it works!  Of course, nobody really wants a 12' piano keyboard, or 2' bells on the French horns, so (obviously) we want both more and less than rote "widening" of the event.  Likewise with solo performers; we want a "more accurate" recreation of the "venue", and some of this also has to do with "subtle" sound cues that can actually be blurred by combing, etc..


Best regards,
Paul
Page 2 of 2 (25 items) Select Pages:  « 1 2
   Target    Threads for related reading   Most recent post in related threads   Forum  Replies   Views   Started 
  »  New  Preamplifiers: keys to mystery. (Lamm L1, L2)..  In analog domain...  Audio Discussions  Forum     2  44700  11-14-2004
Home Page  |  Last 24Hours  | Search  |  SiteMap  | Questions or Problems | Copyright Note
The content of all messages within the Forums Copyright © by authors of the posts