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Re: Let's compare numbers and see why mine are different from yours

If the two channels were frequency shift multiplexed, I'd agree you'd have a strong case for a phase shift as a function of frequency due to slew rate limiting or any other FR anomoly. But they aren't. They are entirely separate signals. If there is any multiplexing at all, it's in the miserable geometry of the pivoted tracking phonograph stylus with the time displacement distortions I cited. Even in FM multiplexing, it is not clear that there would be a problem as the L-R signal would affect both channels simultaneously in the same way.

"Your stylus example...why did you not do the trig calcs and post the numbers? I woulda..:-)"

It's been over 40 years but as I recall, d(A*sine theta*t)/dt = A*cosine theta*t which is at a maximum at t=0 where the value of cosine(0) = 1. That's the worst case for the slew rate. I hope you will reconsider your theory about bandwidth and time related phase shifts affecting the perception of directionality. When both channels are affected identically there is no relative change between them and the directional cues are stable. Only their strength changes, not the relative times between two channels or two ears they occur at.


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