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A vibrato unit is an effects unit used to add tremolo to the sound of an electric instrument, most often an electric guitar. Vibrato units may be individual stomp boxes or built into multi-effects units, but are traditionally built into guitar amplifiers. Vibrato units are particularly used in surf music. The name ''vibrato unit'' is contrary to normal usage of the term ''vibrato'', and in that sense the unit is incorrectly named.〔(Fender '65 Princeton Reverb Reissue | Guitar reviews | MusicRadar.com ''...the effect is misnamed. Vibrato in musical terms means modulation of pitch...'' )〕 The guitaring tradition of using the term "vibrato" to refer to a tremolo effect began in 1956 with Leo Fender's use of the term in naming the Fender Vibrolux. In all other contexts the effect produced by a traditional vibrato unit is known as ''tremolo'' rather than ''vibrato''. A few guitar amplifiers do feature true pitch shifting vibrato, notably some models offered in the late 1950s and into the 60s by Magnatone〔 (【引用サイトリンク】 url = http://magnatoneamps.com/FMvibrato.html )〕〔 〕 and presently by Juke Amplification. Still other amplifier manufacturers describe the effect, in accordance with standard music terminology, as ''tremolo''. ==History== What is now called a ''vibrato unit'' was one of the earliest electronic guitar effects. Danelectro, Gibson, and Premier all produced guitar amplifiers with built-in amplitude modulation units in the late 1940s. The term ''vibrato'' was first applied to the effect in 1956 with the introduction of the Fender Vibrolux. Fender's first amplifier with this effect, the Fender Tremolux model 5E9, had been introduced in the previous year. Despite the different names, the effects circuits were similar, and the effects almost identical. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Vibrato unit」の詳細全文を読む スポンサード リンク
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