US 12,118,975 B2
Feedforward control of an enclosed space with multiple incoherent excitations
Steven Griffin, Kihei, HI (US); and Joshua Martin Montgomery, Seattle, WA (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jul. 22, 2022, as Appl. No. 17/814,284.
Claims priority of provisional application 63/260,297, filed on Aug. 16, 2021.
Prior Publication US 2023/0052886 A1, Feb. 16, 2023
Int. Cl. G10K 11/178 (2006.01); H04R 1/40 (2006.01); H04R 3/00 (2006.01); H04R 19/01 (2006.01)
CPC G10K 11/17857 (2018.01) [G10K 11/17823 (2018.01); G10K 11/17825 (2018.01); G10K 11/17881 (2018.01); H04R 1/406 (2013.01); H04R 3/005 (2013.01); H04R 19/016 (2013.01); G10K 2210/3012 (2013.01); G10K 2210/3026 (2013.01); G10K 2210/3027 (2013.01); G10K 2210/3035 (2013.01); G10K 2210/30351 (2013.01); G10K 2210/3047 (2013.01); G10K 2210/501 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for feedforward noise cancellation in an enclosed space within a structure, the method comprising:
placing a microphone array inside an inner surface of the enclosed space;
conducting modal testing on an outside surface of the enclosed space, wherein the modal testing comprises multiple incoherent noise sources corresponding to locations of microphones in the microphone array;
processing noise generated by the modal testing to create a number of acoustic mathematical models of the enclosed space; and
in response to incoherent noise within the enclosed space, generating a noise canceling signal according to an output of the acoustic mathematical models.