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changed the subject line..finally

DB: ""is this relevant to musical program material?""

A scenario:

My stereo is playing a record..
I'm sitting in the sweet spot, eyes closed.
Two vocalists, next to each other, leaning in so their mouths are 12 inches apart.
The delay, L-R, is just below my ability to discern, so I hear only 1 source...two voices, but I cannot tell that one is to the right of the other, as I cannot lateralize the individual locations.
Now, I flip a switch...the circuit it controls suddenly applies a 600 nanosecond bipolar jitter to both channels..
Suddenly, I can now lateralize two sources that are 1/2 inch apart...so now I can tell who is on the right...who is on the left..
Suddenly, I can image the soundstage better.

That is the ramification of Nordmark's paper. That I can do something to bring the soundstage into focus better. Or, conversly, something to make it worse.

But the problem is...now I can discern 1.5 uSec changes in the musical content R-L...Is my power amp capable of keeping the audio slews that accurate? Is my CD player??(silly question, isn't it?)

Is my speaker cable capable of that?

What in the ear/hearing mechanism is responsible for this lateralization capability? Nordmark was thinking it's zero crossing..
If that's the case, then where the audio signal zero crossing difference R-L can be altered by the addition of a signal in one channel, we would perceive that as shifting the image location of the common signal. Or, since they are not correlated (this being music), it may just blur the image location...

Lots of questions..

Cheers, John



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