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mute(myo͞ot), in music, device designed to diminish uniformly the loudness of a musical instrument. For example, a trumpet mute is cone-shaped and fits into the instrument's bell, and a violin mute is a wooden or rubber clamp that can be attached to the bridge.
a device on musical instruments that muffles the sound and partially alters the timbre. Mutes are used principally with bowed stringed instruments, horns, and trumpets. In bowed stringed instruments, they consist of a clamp made of hard wood, metal, or plastic placed over the top of the bridge. In trumpets and horns, they are a pear-shaped vessel, usually made of aluminum with a layer of cork around the edges, which fits into the bell of the instrument. In the piano, the function of the mute is fulfilled by the left (soft) pedal.