For a device which detects vibrations from music instruments, see pickup (music).
For a small truck used by both business and consumers, see pickup truck.
For a scene which is filmed after the main production of a film has finished and which will be edited into the rest (commonly called a "pickup"), see film theory.
For the act of attracting another person for a date or sexual encounter, see seduction.
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The vibrations of the instrument's metal strings within the magnetic field of the permanent magnets in the pickups, produce small variations in the magnetic flux threading the coils of the pickups.
Another unusual pickup configuration is found on some of the custom basses that Billy Sheehan uses, where the pickups are found on the neck of the bass, replacing the fret markers.
The placement of the pickup greatly affects the sound, with a pickup near the neck joint thought to sound "fatter" or "warmer" while a pickup near the bridge is thought to sound "tighter" or "sharper." Most basses with multiple pickups allow blending of the output from the pickups, providing for a range of timbres.
A pickup device acts as a transducer that captures mechanical vibrations (usually from suitably equipped stringed instruments such as the electric guitar, electric bass guitar or electric violin) and converts them to an electronic signal which can be amplified and recorded.
A magneticpickup consists of a permanent magnet wrapped with a coil of a few thousand turns of fine copper wire.
Electromagnetic pickups are usually designed to feed a high input impedance, typically a megaohm or more and a low impedance load will reduce the high-frequency response of the pickup because of the filtering effect of the inductance.