Question

How does a loudspeaker make sound louder

Answer 1

Loudspeakers will play loud when the cone vibrates a large amount, or soft when it moves a small amount. ... In the same way, sending a bigger pulse of electricity into a loudspeaker makesthe cone move further and generates alouder noise. Quieter sounds are madeby smaller pulses of electricity.

Answer 2

Answer:A megaphone increases the volume of sound by increasing the acoustic impedance seen by the vocal cords, matching the impedance of the vocal cords to the air, so that more sound power is radiated.