I WONDER - How Are Radio Waves Transmitted On The Radio?

The video explains how an antenna picks up signals and spreads them in all directions. These signals are then sent to a receiver, which separates the electric signals from the radio waves. Finally, the electric signals are converted back into sound by the speakers, allowing the sound to be heard.

Describe the process of turning electric signals back into sound.

Why is it important for the sound to be heard?