What effect does constructive interference have on sound?

Constructive interference occurs when two or more sound waves meet and combine in such a way that their amplitudes add together. This typically happens when the waves are in phase, meaning their peaks (crests) and troughs align. The resulting wave has a greater amplitude than the individual waves alone, which translates to increased sound intensity or loudness.

This amplification effect is particularly noticeable when multiple sound sources are producing the same frequency of sound, such as in a concert hall where the sound waves from various instruments overlap. The combined effect not only enhances the overall volume of the sound but can also enrich the quality of the sound by reinforcing certain frequencies, leading to a fuller and more vibrant auditory experience.

The other options do not accurately describe the nature of constructive interference in sound.