With just a little more pressure, the string slides off the pick. When the string is plucked with a pick (or finger), the pick initially puts a kink into the string. Letʼs take for an example an open string played on an acoustic guitar. The air in the cavity and the structural members also influence the sound by interacting with the soundboard. The board imposes its own characteristics on the frequencies it receives, suppressing some and enhancing others. The saddle acts as a selective filter, allowing only some frequencies of the vibrating string through to the soundboard. Rather, the strings transmit the energy to the soundboard via the saddle. Very little of the sound heard from a guitar comes directly from the vibrating strings. The string moves few molecules of air – certainly not enough to create pressure waves of a significant magnitude the ear could easily pick up. How does the guitar produce sound? A player plucks a string and sets the string into a complex pattern of vibration that consists of a fundamental and many partials. Acoustic guitars are fundamentally designed to convert the mechanical energy of string vibration into pressure waves that are transmitted to the ear through the air.
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