Constructive and destructive interference can change the intensity of sound.

Question

Quizplus · Accepted Answer

Constructive interference occurs when two waves of the same frequency and amplitude meet in phase, resulting in an increase in amplitude (and therefore intensity) of the resulting wave. Destructive interference occurs when two waves of the same frequency and amplitude meet out of phase, resulting in a decrease in amplitude (and therefore intensity) of the resulting wave.

Constructive and Destructive Interference Can Change the Intensity of Sound