Friday, August 27, 2004


Acoustical device for reinforcing sound, as the sounding board of a piano, the �belly� of a stringed instrument, the air mass of an organ pipe, and the throat, nose, and mouth cavities of a vocal animal. In addition to augmenting acoustic power, resonators may also, by altering relative intensities of overtones, change the quality of a tone. See also soundboard. The Helmholtz


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