The Swarmatron was created to produce eight tones tuned approximately to one
note, each tone slightly different in pitch to produce a complex and natural
choral effect.
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These eight oscillators can be played with a single ribbon controller
(variable resistor) to move the pitch center up or down.
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The span control expands the sound of a swarm of eight notes spread just a
few cents apart into a wide chord of equidistant pitches spread over the
entire spectrum. The player can "taffy pull" the resulting chord by using
the span control and pitch ribbon in tandem.
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Swarms of sine waves evoke swarms of angels congregating. Swarms of sawtooth
waves evoke the swarming of bees. The sound of a host of voices, earthly or
unearthly, has a unique character recognized by the ear even when they are
folded together in unison.