Methods and systems for active sound attenuation in a fan unit

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United States of America Patent

PATENT NO 9872104
SERIAL NO

14790543

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Importance

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Abstract

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A system and method for controlling noise produced by an air handling system, for example, is provided. The system includes a source microphone to collect sound measurements from the air handling system and a processor to define a cancellation signal that at least partially cancels out the sound measurements. The system also includes a speaker to generate the cancellation signal. The sound measurements are at least partially canceled out within a region of cancellation. Accordingly, the system further includes a response microphone to collect response sound measurements at the region of cancellation. The processor tunes the cancellation signal based on the response sound measurements.

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Patent Owner(s)

  • CES GROUP, LLC;NORTEK AIR SOLUTIONS, LLC;HUNTAIR, INC.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hopkins, Lawrence G Happy Valley, US 29 382

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