Resonator

From Free net encyclopedia

For a hollow device that uses resonance to amplify a wave, see Cavity resonator.

A resonator is a device or part that vibrates with and amplifies waves.

1 Automobiles
2 Musical instruments
3 See also
4 External links

Automobiles

A resonator is an independent part found in some exhaust systems that works with the muffler to reduce noise.

A resonator chamber in automobiles is part of a muffler that attempts to force sound waves to "cancel each other out." [1]

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Musical instruments

Most musical instruments include resonators for the sound of the instrument. In string instruments this is the body of the instrument. In many keyboard percussion instruments, below the centre of each note is a tube, which is a cavity resonator, that is referred to simply as the resonator. The length of the tube varies according to the pitch of the note, with higher notes having shorter resonators. The tube is open at the top end and closed at the bottom end, creating a column of air which resonates when the note is struck. This adds depth and volume to the note.

In Camille Saint-Saëns' Danse Macabre, a skeleton's dance is depicted by a xylophone. Since the instrument in Saint-Saëns' day did not have resonators, it is often performed with resonators removed (or covered). This makes sound of the instrument more brittle and bone-like. The vibrato effect of a vibraphone is obtained by a mechanism which opens and shuts the resonators.

Also, by itself, it may be refering to the resonator guitar, dobro.

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