Answer
As a person walks in between a pair of loudspeakers which produces tones of the same amplitude and frequency, he hears a varying sound intensity, since the sound produced by two speakers are not in phase. So if we superimpose the waves, they do not match exactly even though the frequency and amplitude of the sound waves are same.
Work Step by Step
As a person walks in between a pair of loudspeakers which produces tones of the same amplitude and frequency, he hears a varying sound intensity, since the sound produced by two speakers are not in phase. So if we superimpose the waves, they do not match exactly even though the frequency and amplitude of the sound waves are same.
