Active Noise Control

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Active Noise Control

The use of energy-consumptive systems to reduce “white” noise by applying specific algorithms and computer-controlled digital processors, to generate sounds opposite that of the undesired noise(s), effectively cancelling their effects.
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His silencer was crude and only marginally effective, but his "swirling water" theory stumbled on the fringe of the most efficient way for a suppressor to work -- sound cancellation.
is producing a variety of industrial sound cancellation systems including applications for HVAC ducts, material handling fans, and vacuum pumps.