In acoustics, a "beat" refers to a phenomenon that occurs when two sound waves of slightly different frequencies interfere with each other. When these waves are played together, they produce fluctuations in amplitude that can be perceived as a periodic variation in loudness. This effect arises because the waves periodically align and misalign due to their frequency difference. The beat frequency is equal to the absolute difference between the frequencies of the two sound waves.
New to topics? Read the docs here!