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.
This post is made possible by the generous support of people like you and our sponsors:
Follow Ups
- Coaxial Cable - Triode_Kingdom 19:43:23 04/29/12 (1)
- RE: Coaxial Cable - TimFox 05:10:58 04/30/12 (0)