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Re: Yep

Yes, we are talking about inter-aural delays.

Yes, we'd have to show an amplitude dependent delay of some kind.

Yes, that would require a head vice if one wants to lock the image in absolute space relative to the head.. But, if an image location is blurred as a result of variations in the delay, then it would be shifting relative at some rate, so head position and movement is relatively unimportant..you could "see" the image blurring regardless of the absolute head angle..within reason of course..

Ten feet away center stage, 20 uSec represents about a foot shift right to left..Seriously, I could not think of image accuracy to 1/2 inch, which is about 1.5 uSec, ten feet away...one foot, yes..and that is 20 uS. Way beyond what a CD should reasonably maintain w/r to origional analog content.

He used headphones.

Inter aural crosstalk? Don't know, Nordmark did not discuss the ramifications of that, from what I recall..but I'll be honest, my image blurred as I was reading past page 5..

My premise for Nordmark is that speaker wires, with the inductance and capacitance, may have less than desireable effect on the passing through of slew based lateralization info..and I'm not sure if there needs to be a non linear wire effect (violation of superposition) for the different frequency currents involved..Skin effect does seem to be a reasonable candidate, with the inductance vs frequency relation, assuming the 1.5 uSec based speeds..

He provided 1.5 uSec measured capability from about 1.5Khz up to about 12 Khz. So, for a non perfect wire to be heard, it would have to be able to delay the 12 Khz info more than 1.5 uSEc more than it did the 1.2 Khz information, or visa versa..

Since that should be measureable using SOTA equipment, and it has not, (to the best of my knowledge), I don't know what to make of that.

Cheers, John


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