Simple question, or is it...


What exactly is an audio signal made of, and what exactly is the medium it travels through in a cable??
128x128thecarpathian
mapmanIt’s an electromagnetic field. Read all about it:

https://en.m.wikipedia.org/wiki/Electromagnetic_field

>>>>D-

And people say I enjoy shooting fish in a barrel. 
Audio signal is electrical waves that represents sound waves in analog in digital it's binary.
Bravo Millercarbon!
Too many of us , myself included, are afraid to recognize the miraculous in the mundane or sometimes maybe just too preoccupied with the trivial.