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Acoustic Guitar

An acoustic guitar is a guitar that uses only acoustic (as opposed to electronic) means to transmit the strings' vibrational energy to the air in order to produce a sound. This typically involves the use of a sound board and a sound box to amplify the vibrations of the string. The source of sound in an acoustic guitar is the string, which is plucked with the fingers or with a plectrum. The string vibrates at a fundamental frequency but also creates many harmonics at different frequencies. The frequencies produced depend on string length, mass, and tension. The string causes the soundboard and sound box to vibrate, and as these have their own resonances at certain frequencies, they amplify some string harmonics more strongly than others, hence affecting the timbre produced by the instrument. [Acoustic guitar. Wikipedia]
Acoustic Guitar
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