In Reply to: RE: Audibility of group delay posted by TimFox on April 29, 2012 at 15:21:56:
Coaxial cable does in fact produce small, non-linear phase shifts and reflections that vary with frequency, even when properly terminated. This is due, I believe, to variations in physical tolerances along its length and perhaps also chemical makeup. I have measured these anomalies in the past, and while they are insignificant for most purposes, a sensitive nulling mechanism with a dynamic range exceeding 60dB or so can detect the effect of these disturbances as variations in input impedance.
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Follow Ups
- Coaxial Cable - Triode_Kingdom 19:43:23 04/29/12 (1)
- RE: Coaxial Cable - TimFox 05:10:58 04/30/12 (0)