Methods and systems for active sound attenuation in an air...

Details Methods and systems for active sound attenuation in an air... Methods and systems for active sound attenuation in an air...

F - Mech Eng,Light,Heat,Weapons

24

F

F24F 13/24 (2006.01) F04D 25/08 (2006.01) F04D 29/66 (2006.01) G10K 11/178 (2006.01)

Patent

CA 2735754

A system and method for controlling noise produced by an air handling system 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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