In the US the "signal" would be a 60hz sign wave and at 120v
The concept of a dielectric conducting any signal in the audible spectrum of 20-20hz is ridiculous
As frequency increases, the Dielectric starts exhibiting shunt resistive losses which can be measured and quantified as signal loss across the termination load. Fortunately for our application (audio) these shunt losses don't begin to surface until frequencies much higher than the audio bandwidth.
The concept of a dielectric conducting any signal in the audible spectrum of 20-20hz is ridiculous
As frequency increases, the Dielectric starts exhibiting shunt resistive losses which can be measured and quantified as signal loss across the termination load. Fortunately for our application (audio) these shunt losses don't begin to surface until frequencies much higher than the audio bandwidth.