As a sound source approaches the listener,the loudness ;as a sound source recedes from the listener the loudness .
A)increases;decreases
B)decreases;increases
C)increases;stays the same

Question

Quizplus · Accepted Answer

As a sound source approaches a listener, the sound waves are compressed, making the sound appear louder. Conversely, as the source moves away, the waves are stretched, making the sound appear quieter.

As a Sound Source Approaches the Listener,the Loudness ;As a Sound