[Scott Dorsey]

In article , Paul wrote:
RF engineers use the stand wave ratio (SWR) to find the least
amount of reflected power with a given termination load.

Not sure if audio frequency people use these techniques....

They do, only when cable lengths are long enough for transmission line effects
to be significant. Which is to say many miles.

Back in the days of the analogue telephone plant, looking at long distance
lines with a tdr would let you see discontinuities like loading coils and
line damage. These days you seldom see even telephone loops more than a
few miles before the signal is digitized.

Most of the time audio people view cables as lumped-sum networks because
cables are far shorter than a quarter-wave.

And, as Phil notes, microphone cables aren't even specified for characteristic
impedance, and usually the diameter and dielectric thickness aren't controlled
as tightly as a cable intended to be constant-Z.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."