Article
Article
Sympathetic vibration
Article By:
Kinsler, Lawrence E. Formerly, U.S. Naval Postgraduate School, Monterey, California.
Last reviewed:January 2021
DOI:https://doi.org/10.1036/1097-8542.673800
The driving of a mechanical or acoustical system at its resonant frequency by energy from an adjacent system vibrating at this same frequency. Examples include the vibration of wall panels by sounds issuing from a loudspeaker, vibration of machinery components at specific frequencies as the speed of a motor increases, and the use of tuned air resonators under the bars of a xylophone to enhance the acoustic output. Increasing the damping of a vibrating system will decrease the amplitude of its sympathetic vibration but at the same time widen the band of frequencies over which it will partake of sympathetic vibration. See also: Mechanical vibration; Resonance (acoustics and mechanics); Vibration
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