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The Roland Rhythm 55 (sometimes known by its model number, the Roland TR-55), is a preset drum machine (or "beatbox"), produced by Roland in 1972. It was one of a trio of drum machines released by Roland that year, offering features intermediate between those of Rhythm 33 (TR-33) and Rhythm 77 (TR-77). "TR" stands for "transistor rhythm". The Rhythm 55 had analogue voice circuits to produce its drum sounds, and offered approximately 20 permutations of preset rhythms. ==Drum sounds== The Rhythm 55's drum voices are listed below. (They are the same as for the Rhythm 33.) The sounds are generated by analogue synthesis techniques, and, as is typical with this technology, the sounds themselves, although possessing a certain musical charm, are not particularly realistic imitations of their acoustic namesakes. The following voices are generated by "tuned resonance" type circuits: *bass drum *low conga *high conga *cow bell *rim shot *claves The following voices are generated by shaped white noise: *snare drum *hi hat *maraca *cymbal The only control on the front panel for adjusting the sounds is a balance control, which alters the relative levels of the bass drum and the cymbal/hi hat/maracas sounds. 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「Roland Rhythm 55」の詳細全文を読む スポンサード リンク
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