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string resonance
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 440 Hz will cause an E string at 330 Hz to resonate, because they share an overtone of 1320 Hz (3rd overtone of A and 4th overtone of E).
Electric guitars can have string trees near the tuning pegs to mute this type of reverberation. The string length behind the bridge also must be as short as possible to prevent the resonance.
String resonance is a factor in the timbre of a string instrument. Tailed bridge guitars like the Fender Jaguar differ in timbre from guitars with short bridges, because of their (extended) floating bridge. The Japanese Koto is also an example of an instrument with occurring string resonance.
==String resonance in instrument building==
Sometimes string resonance is used in the construction of the instrument, like for instance the Sympathetic strings in many Eastern instruments.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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