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Noise Reduction from Shop Vacuums by the Application of Helmholtz Resonator.
Noise Reduction from Shop Vacuums by the Application of Helmholtz Resonator.
Friday, November 7, 2014
Plaza Foyer (Sheraton)
The effect of acoustic attenuation of a Helmholtz resonator is exemplified with a shop vacuum. By adding a tuned Helmholtz resonator, sound is reflected back to the source when air is blown over the open neck of the resonator, thereby reducing the sound pressure level at a certain frequency.