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beats
A phenomenon of importance in acoustics and radio resulting from the interference of two wave-trains of similar frequency in which a new periodicity is set up in the aggregate amplitude having frequency equal to the difference of the two constituent frequencies. Beats between two musical notes of similar pitch can often be heard as an umpleasant throbbing; beating between two ultrasonic tones may result in an audible tone.
Related categories
• WAVES AND WAVE PHENOMENA
• ACOUSTICS AND MUSIC
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