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A resonator guitar or resophonic guitar (often generically called a "Dobro" [1]) is an acoustic guitar that produces sound by conducting string vibrations through the bridge to one or more spun metal cones , instead of to the guitar's sounding board (top). Resonator guitars were originally designed to be louder than regular acoustic guitars ...
Experiment using two tuning forks oscillating at the same frequency.One of the forks is being hit with a rubberized mallet. Although the first tuning fork hasn't been hit, the other fork is visibly excited due to the oscillation caused by the periodic change in the pressure and density of the air by hitting the other fork, creating an acoustic resonance between the forks.
A Dobro-style resonator guitar. String instruments such as the bluegrass banjo may also have resonators. Many five-string banjos have removable resonators, so players can use the instrument with a resonator in bluegrass style, or without it in folk music style. The term resonator, used by itself, may also refer to the resonator guitar.
Typically, a guitar's body is a sound box, of which the top side serves as a sound board that enhances the vibration sounds of the strings. In standard tuning the guitar's six strings [2] are tuned (low to high) E 2 A 2 D 3 G 3 B 3 E 4. Guitar strings may be plucked individually with a pick (plectrum) or fingertip, or strummed to play chords.
Dobro (/ d oʊ b r oʊ /) is an American brand of resonator guitars owned by Gibson and manufactured by its subsidiary Epiphone. The term "dobro" is also used as a generic term for any wood-bodied, single-cone resonator guitar. The Dobro was originally a guitar manufacturing company founded by the Dopyera brothers as
The Dobro or resonator guitar is a uniquely American lap steel guitar with a resonator cone designed to make a guitar louder. [15]: 109 It was patented by the Dopyera brothers in 1927, [15]: 109 but the name "Dobro", a portmanteau of DOpyera and BROthers, became a generic term for this type of guitar. [44]
Similar to the flat top guitar in appearance, but with a body that may be made of brass, nickel-silver, or steel as well as wood, the sound of the resonator guitar is produced by one or more aluminum resonator cones mounted in the middle of the top. The physical principle of the guitar is therefore similar to the loudspeaker.
A tuning fork is an acoustic resonator in the form of a two-pronged fork with the prongs formed from a U-shaped bar of elastic metal (usually steel). It resonates at a specific constant pitch when set vibrating by striking it against a surface or with an object, and emits a pure musical tone once the high overtones fade out.