1. sound post (e.g. of a violin)
Wikipedia definition
2. Sound postIn a string instrument, the sound post or soundpost is a small 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 back plate and alters the tone of the instrument by changing the vibrational modes of the plates. The sound post is sometimes referred to as the âme, a French word meaning "soul".
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