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The Swarmatron is an analogue synthesizer or electronic musical instrument that uses a ribbon controller rather than a keyboard. It is noted for its use of multiple oscillators that are linked through a 'swarm' control, giving its distinctive sound and method of playing. == Operation == The Swarmatron is a fingerboard synthesizer like the Trautonium or Tannerin. A finger is placed or slid from side to side along a ribbon controller, controlling the pitch. Glissandi are obviously easily achieved, or careful finger placement may be used to play discrete notes. The distinctive feature of the Swarmatron is its use of eight individual oscillators, under a single control. These oscillators produce an equidistant chord, where their spacing is under the player's immediate control. There are two ribbon controllers: the larger controls the pitch in the obvious manner, the second is used to control the spacing of the oscillators when in 'Swarm' mode. A large central knob on a rotary control may also be used to control this swarm.〔 The oscillators may also be switched on and off individually by a row of switches. With all but one switched off, the instrument becomes a simple ribbon-controlled monophonic synth, capable of the usual glissandi. Using combinations, and adjustment of the range control, allows a non-equidistant swarmed chord to be produced. The oscillators may also be preset to the usual chord intervals of major thirds etc. The pitch control also controls a low-pass filter. This may either track the main pitch, or may be controlled by the second ribbon.〔In this mode, swarming is controlled by the central knob.〕〔 With the sawtooth wave of the oscillators, this tracking filter controls the sound of the instrument. As for many other analogue synths, there is also an ADSR envelope control.〔 Like the Persephone, the tuning controls for the ribbon's base frequency and overall range have such a wide span that the ribbon controller itself is unlabelled, although some players mark note positions on the ribbons for a piece.〔 There are no facilities for MIDI. However there are three analogue 0-10V Control Voltage (CV) inputs for pitch, filter cutoff and swarm.〔 With the use of a standard MIDI to CV converter, the instrument may be controlled from a sequencer or other MIDI controller. 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「Swarmatron」の詳細全文を読む スポンサード リンク
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