Can beats be created by two waves with different amplitudes? How will they look like?
Beats are created when two waves have slightly different frequencies. The amplitudes are not critical in making beats, however.
The amplitude of the resulting beats is the sum of the two waves. In other words, if one wave has maximum value 2 and one has maximum value 1, the maximum value of the combined wave will be 3.
The minimum of the resulting beats is always zero, since the two waves will always cancel at some points.
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