In Reply to: Audibility of group delay posted by op48no1 on April 28, 2012 at 07:44:53:
If you take a reasonable length of good coaxial cable, properly terminated, it has a constant delay time from DC to very high frequency. The phase shift from the signal at one end to the signal at the other end is therefore zero at DC, and increases linearly with frequency. This constant derivative of phase with respect to frequency is the ideal response for many signals, since it only delays the signal while not affecting the shape, etc. However, 40 years of coax at 1.5 nsec per foot (27 light-years of length) and 0.2 dB per 100 feet (1 MHz) would give a lot of attenuation, even at audio.
Edits: 04/30/12
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Follow Ups
- RE: Audibility of group delay - TimFox 15:21:56 04/29/12 (3)
- Coaxial Cable - Triode_Kingdom 19:43:23 04/29/12 (1)
- RE: Coaxial Cable - TimFox 05:10:58 04/30/12 (0)
- RE: Audibility of group delay - op48no1 15:30:46 04/29/12 (0)