Keywords: Helmholtz resonator 2.jpg A Helmholtz resonator in an experimental tone generator designed by Hermann Helmholtz The resonator is the cylindrical object i Most musical tones are composed of many frequencies called harmonics The purpose of this device was to generate a pure tone of one frequency The electromagnet b vibrates the tuning fork a The Helmholtz resonator i is tuned to the fundamental frequency of the tuning fork amplifying its sound For more information see http //books google com/books id x_A5AAAAIAAJ pg PA121 Hermann L F Helmholtz 1912 On the Sensations of Tone as a Physiological Basis for the Theory of Music 4th Ed translated from his 1877 work by Alexander J Ellis Longmans Greene Co London p 120-121 Historisk Fysik bind I 1896 Poul la Cour Jacob Appel Helmholtz resonators Helmholtz's apparatus for the synthesis of sound Hermann von Helmholtz History of technology Acoustics PD-old |