Any one up for a discussion?

[Ether]

Originally Posted by plnyyanks

sound waves move a magnet surrounded by a coil, producing a current.

Typically, sound waves move the coil. The magnet is stationary.

By the way, the fact that these two cases had separate physical interpretations was a burr under Einstein's saddle that was a motivating factor for his 1905 paper On The Electrodynamics of Moving Bodies.

Microphones can also use capacitance (sound waves move a diaphragm which changes its capacitive coupling to a second diaphragm) and the piezoelectric effect (sound waves distort a crystal which creates a voltage).