sympathetic vibration


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Sympathetic vibration

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 Resonance (acoustics and mechanics), Vibration

sympathetic vibration

[‚sim·pə′thed·ik vī′brā·shən]
(physics)
The driving of a mechanical or acoustical system at its resonant frequency by energy from an adjacent system vibrating at the same frequency.
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One common technique is creating sympathetic vibrations in the strings.
Any sympathetic vibrations in bones or skin are not intense enough to disturb the air around your face and send little sound waves travelling from your cheeks to the ear of your listener.
Singers, especially novice singers, need to understand the difference between sympathetic vibrations in the sinus regions of the face and inappropriate nasal resonance.
Vibration analysis, which analyzes various factors, including sympathetic vibrations, is extremely important technology for the continued stable operation of the pumps.
During the practical session, participants tapped the motor mount with hammers to measure natural frequencies, and operated the motor in order to produce sympathetic vibrations and compare them with the vibration analysis results of normal motor In 1989, the EBARA CORPORATION established the EBARA Hatakeyama Memorial Fund (EHMF) to deepen mutual understanding, mainly with Southeast Asian countries, through international cooperation by means of technical guidance and other efforts.
Thus, it is possible that when an individual has a learning moment in the Philosophic kind of understanding, there are sympathetic vibrations right through into the Somatic understanding--a sort of enriching, harmonious polyphony.
The "lower" register (so called here for the range of pitches it produces, not where sympathetic vibrations occur) has the thyroarytenoids more prominently contracted.
When singing certain pitches, we often feel sympathetic vibrations in our chest or the front and sides of our head.
The author, in dealing with registers, clarifies that the terms "head" and "chest" used for upper and lower registers connote sympathetic vibrations, but not the location of resonance.
Those who can hear the natural overtones and sympathetic vibrations that every note produces, more successfully match tones and learn to create the desired sound