When those engineers and professors discuss waveguides and their implications in audio cables, they usually just show characteristic impedance, LCR filter effect losses, impedance losses, etc. They rarely mention phase effects, group delay, etc, and I've never seen any mention of the interaction between the electromagnetic wave traveling at a few meters per second in the conductor material, and the electromagnetic wave traveling at nearly the speed of light in the dielectric.
This article is a "readers digest" version which discusses much of this and has been printed in Stereophile and HiFiNRR in the UK:
http://www.essex.ac.uk/ese/research/audio_lab/malcolmspubdocs/G3%20HFN%20Essex_Echo_(cables_1985).pdf
Here is a much more in-depth and technical paper (long - 12mb):
http://www.essex.ac.uk/ese/research/audio_lab/malcolmspubdocs/G6-9%20Unification%20(4%20parts).pdf
Best Regards,
Jeffrey Smith
Silversmith Audio
This article is a "readers digest" version which discusses much of this and has been printed in Stereophile and HiFiNRR in the UK:
http://www.essex.ac.uk/ese/research/audio_lab/malcolmspubdocs/G3%20HFN%20Essex_Echo_(cables_1985).pdf
Here is a much more in-depth and technical paper (long - 12mb):
http://www.essex.ac.uk/ese/research/audio_lab/malcolmspubdocs/G6-9%20Unification%20(4%20parts).pdf
Best Regards,
Jeffrey Smith
Silversmith Audio