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- Beats exist when two waves of
- close frequency interfere with each other.
- The resulting frequency of the wave is an
- average of the frequencies of the waves
- that are interacting. Beats occur with a
- frequency equal to the difference in
- frequencies of the interacting waves.
- The beats themselves are a change in the
- amplitude of the wave. In sound, this
- variation of amplitude is perceived as
- a change in loudness.
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- (1) frequency of resulting wave:
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- (2) frequency of beats:
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