US 12,262,168 B2
Active noise reduction earbud
Andrew Donald Munro, Northborough, MA (US); Lei Cheng, Wellesley, MA (US); Ole Nielsen, Cambridge (GB); Emery Ku, Sudbury, MA (US); and Cedrik Bacon, Ashland, MA (US)
Assigned to Bose Corporation, Framingham, MA (US)
Filed by Bose Corporation, Framingham, MA (US)
Filed on Nov. 1, 2023, as Appl. No. 18/386,125.
Application 18/386,125 is a continuation of application No. 18/073,699, filed on Dec. 2, 2022, granted, now 11,838,719.
Application 18/073,699 is a continuation of application No. 17/362,625, filed on Jun. 29, 2021, granted, now 11,540,043, issued on Dec. 27, 2022.
Prior Publication US 2024/0064454 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G10K 11/178 (2006.01); H04R 1/10 (2006.01)
CPC H04R 1/1083 (2013.01) [G10K 11/17857 (2018.01); G10K 11/17873 (2018.01); G10K 11/17881 (2018.01); H04R 1/1016 (2013.01); G10K 2210/1081 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
receiving a first input signal developed by a first feedforward microphone associated with an active noise reduction (ANR) earbud with a housing, wherein the first feedforward microphone is configured to sense external sound that is conducted through a first sound inlet opening in the housing, and wherein the first sound inlet opening is configured to sit within a concha cavum of a user's ear and faces toward an auricle of the user's ear when the earbud is worn; and
processing the first input signal using a first filter, to generate a first output signal for an acoustic transducer of the ANR earbud,
wherein the ANR earbud further comprises a second feedforward microphone configured to develop a second input signal, and a second sound inlet opening in the housing and configured to conduct external sound to be sensed by the second feedforward microphone.