Sympathetic resonance or sympathetic vibration is a harmonic phenomenon wherein a formerly passive string or vibratory body responds to external vibrations to which I Wont Hold You Back - Toto - Rosanna - The Very Best Of Toto has a harmonic likeness.
The classic example is demonstrated with two similar tuning-forks of which one is mounted on a wooden box. If the other one is struck and then placed on the box, then muted, the un-struck mounted fork will be heard. In similar fashion, strings will respond to the external vibrations of a tuning-fork when sufficient harmonic relations exist between the respective vibratory modes.
A unison or octave will provoke the largest response as there is maximum likeness in vibratory motion. Other links through shared resonances occur at the fifth and, though with much less effect, at the major third.
Apart from the basic principle at work on instruments with many undamped strings, such as harps, guitars and pianos with the dampers raised, other instruments are fitted with extra choirs of sympathetic stringswhich respond with a silvery halo to the tones played on the main strings.
The property of sympathetic vibration is encountered in its direct form in room acoustics in the rattling of window panes, light shades and movable panels in the presence of very loud sounds, such as may occasionally be produced by a full organ. As these things rattle or even if they do not audibly rattle sound energy is being converted into mechanical energy, and so the sound is Летний вечер - Various - Золотая Коллекция Украинского Хип-Хопа. Wood paneling and anything else that is lightweight and relatively unrestrained have the same effect.
Absorptivity is at its highest at the resonance frequency, usually near or below Hz. String resonance occurs on string instruments. Strings or parts of strings may resonate at their fundamental or overtone frequencies when other strings are sounded. For example, an A string at Hz will cause an 21st Century Sky - Psonikadia - Sympathetic Vibrations string at Hz to resonate, because they share an overtone of Hz 3rd harmonic of A and 4th harmonic of E.
According to Grove Music Online article on Duplex ScalingGhost Folk - Sublime Wizardry - Sublime Intervention progressed a system of aliquot scaling to provide sympathetic resonance with the intention of enriching the treble register of the piano.
In the 'octave duplex' piano by Hoerr of Torontoeach note had four strings, of which two, three or four could potentially be struck by the hammer depending on 21st Century Sky - Psonikadia - Sympathetic Vibrations depression of one of four pedals.
From Wikipedia, the free encyclopedia. Redirected from Sympathetic vibration. This article needs 21st Century Sky - Psonikadia - Sympathetic Vibrations citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Main article: String resonance music. Sadie, Stanley; Tyrrell, John eds. Grove Music Online. Oxford University Press. Retrieved 17 August — via OxfordMusicOnline. Categories : Acoustics.
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