[itcrowd]

Another fun fact: this actually happens with (cell) phone calls.

You don't send your speech over the line, instead you send some parameters over the line which are then, at the receiving end, fed into a white(-ish) noise generator to recover the speech.

Edit: not by using a neural net or deep learning, of course.

[JonnieCache]

In case anyone is wondering, the technique is called linear predictive coding.

[AstralStorm]

Predictive coding. Linear is a specific variant of it used in older codecs.

[VikingCoder]

What's the difference in bandwidth?