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Pickup (music technology)
A pickup device is a transducer that captures mechanical vibrations from stringed instruments such as the electric guitar, electric bass guitar, Chapman Stick, or electric violin, and converts them to an electrical signal that is amplified, recorded, or broadcast.
== Magnetic pickups ==
A magnetic pickup consists of a permanent magnet with a core of material such as alnico or ferrite, wrapped with a coil of several thousand turns of fine enameled copper wire. The pickup is most often mounted on the body of the instrument, but can be attached to the bridge, neck or pickguard, as on many electro-acoustic archtop jazz guitars and string basses. The permanent magnet creates a magnetic field; the motion of the vibrating steel strings disturbs the field, and the changing magnetic flux induces a voltage in the coil. This signal is then carried to amplification or recording equipment via a cable. There may also be an internal preamplifier stage between the pickup and cable.
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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