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A cello is able to produce a sound because friction on the bow hair (created by the rosin) allows a grip on the strings. This produces a sound which travels down the bridge and is amplified by the cello's wooden body. The soundpost within the hollow of the instrument connects the two planes of wood and thus help conduct sound through the entire cello. The 4 strings are of different thickness, and when stopped at different lengths, produce sounds of different pitches. These pitches are maintained by a constant grip from the bow, and a firm stopping of the string (esp. by the fingers). As compared to a violin, a cello is able to have its fuller and stronger sound due to the larger body. The end pin connecting the cello to the ground also aids in conducting the sound within the room/hall.

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17y ago

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