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The sound post is the piece marked 5. In a string instrument, the sound post or soundpost is a dowel inside the instrument under the treble end of the bridge, spanning the space between the top and back plates and held in place by friction. It serves as a structural support for an archtop instrument, transfers sound from the top plate to the ...
Sound post & bridge foot. The sound post or "soul post" fits precisely between the back and top, just to the tailward side of the treble bridge foot. It helps support the top under string pressure and has a variable effect on the instrument's tone, depending on its position and the tension of its fit.
Closeup of a violin tailpiece, with a fleur-de-lis Front and back views of violin bridge Sound post seen through f-hole. The bridge is a precisely cut piece of maple that forms the lower anchor point of the vibrating length of the strings and transmits the vibration of the strings to the body of the instrument. Its top curve holds the strings ...
The Post Instrument was introduced in an era when sound locating was still common, and some techniques for measuring the angle by sound were developed. This basically consisted of moving the horizontal slider until the indicator pointer was over the "sound line", a circle on the map representing a 5 miles (8.0 km) distance around the post.
Moving the sound post has very complex consequences on the sound; in the end, it is the ear of the person doing the adjusting that determines the desired location of the post. Here are some rough guides to how sound post placement influences the sound quality of the instrument: If the sound is too thin and shrill, the post may be too near the f ...
This behaviour enhances the violin tone quality: if the sound post's position is adjusted, or if the forces acting on it are changed, the sound produced by the violin can be adversely affected. [36] Together they make the shape of the violin body asymmetrical, which allows different vibrations to occur, which causing the timbre to become more ...
The double bass features many parts that are similar to members of the violin family, including a wooden, carved bridge to support the strings, two f-holes, a tailpiece into which the ball ends of the strings are inserted (with the tailpiece anchored around the endpin mount), an ornamental scroll near the pegbox, a nut with grooves for each ...
Internally, the cello has two important features: a bass bar, which is glued to the underside of the top of the instrument, and a round wooden sound post, a solid wooden cylinder which is wedged between the top and bottom plates. The bass bar, found under the bass foot of the bridge, serves to support the cello's top and distribute the ...