Mandolin
Construction

Mandolins have a body that acts as a resonator, attached to a neck. The resonating body may be shaped as a bowl (necked bowl lutes) or a box (necked box lutes). Traditional Italian mandolins, such as the Neapolitan mandolin, meet the necked bowl description. The necked box instruments include archtop mandolins and the flatback mandolins.

Strings run between mechanical tuning machines at the top of the neck to a tailpiece that anchors the other end of the strings. The strings are suspended over the neck and soundboard and pass over a floating bridge. The bridge is kept in contact with the soundboard by the downward pressure from the strings. The neck is either flat or has a slight radius, and is covered with a fingerboard with frets. The action of the strings on the bridge causes the soundboard to vibrate, producing sound.

Like any plucked instrument, mandolin notes decay to silence rather than sound out continuously as with a bowed note on a violin, and mandolin notes decay faster than larger chordophones like the guitar. This encourages the use of tremolo (rapid picking of one or more pairs of strings) to create sustained notes or chords. The mandolin's paired strings facilitate this technique: the plectrum (pick) strikes each of a pair of strings alternately, providing a more full and continuous sound than a single string would.

Various design variations and amplification techniques have been used to make mandolins comparable in volume with louder instruments and orchestras, including the creation of mandolin-banjo hybrids with the drum-like body of the louder banjo, adding metal resonators (most notably by Dobro and the National String Instrument Corporation) to make a resonator mandolin, and amplifying electric mandolins through amplifiers.
detectable_format:number_highlighted_sections[2]