Electromagnetic fields. Be forewarned, this involves science...

EMW you say. What pray tell are EMW?

I presume ElectroMagnetic Waves. 

@artemus_5

My apologies. Was out of order.

EMF - electromagnet waves.

Spend too much time texting w 14yr old daughter. Short form is king, and doesn’t always work. 
You can see in the movie how an ac signal generates waves in a predictable pattern along the conductor. With the complex waves being generated by an audio signal going through a wire, those waves are going to, in turn, have an impact on the signal passing through the wire. That “feedback loop”, is going to change the signal. Not measurable I suspect because we are not yet measuring the right parts of the signal.

Yes well it helps to be a little more specific than a teenage girl.

Whatever. Thanks. That is what I been saying for like years now.

Didn't read the article.Didn't need to..Ask ANY Master or LONG time J-man electrician about Electromagnetic fields around high voltage transformers & their unique ability to find the TINIEST grounded path within arms reach...

Thanks perki thats an excellent video. Even though the video is 10 years old it makes clear quantum physics, superconductors and electron manipulation are where the current science is. Electro-magnetics have been studied for literally a 100 years. Transformers are based on electro-magnetic fields, for instance. I think people forget audio is simply electrical signals operating at different frequencies.