US 12,382,220 B2
Dynamic control of multiple feedforward microphones in active noise reduction devices
Richard L. Pyatt, Fitchburg, MA (US); and Emery M. Ku, Somerville, MA (US)
Assigned to Bose Corporation, Framingham, MA (US)
Filed by Bose Corporation, Framingham, MA (US)
Filed on Oct. 7, 2022, as Appl. No. 17/962,005.
Application 17/962,005 is a continuation of application No. 17/129,615, filed on Dec. 21, 2020, granted, now 11,496,832.
Application 17/129,615 is a continuation of application No. 16/422,239, filed on May 24, 2019, granted, now 10,873,809, issued on Dec. 22, 2020.
Prior Publication US 2023/0026742 A1, Jan. 26, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G10K 11/178 (2006.01); G10L 21/0216 (2013.01); H04R 1/10 (2006.01); H04R 3/04 (2006.01); H04R 5/027 (2006.01); H04R 5/04 (2006.01)
CPC H04R 3/04 (2013.01) [G10L 21/0216 (2013.01); H04R 1/10 (2013.01); H04R 5/027 (2013.01); H04R 5/04 (2013.01); G10K 11/178 (2013.01); G10L 2021/02166 (2013.01); H04R 2460/01 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An earpiece of an active noise reduction (ANR) device, the earpiece comprising:
a driver;
a port;
a plurality of microphones, wherein each of the plurality of microphones is usable for capturing ambient audio to generate input signals for both an ANR mode of operation and a hear-through mode of operation of the ANR device; and
a controller configured to:
process a first subset of microphones from the plurality of microphones to generate input signals for the ANR mode of operation, and
process a second subset of microphones from the plurality of microphones to generate input signals for the hear-through mode of operation, wherein the second subset of microphones excludes a first microphone from the plurality of microphones located closest to a noise pathway of the earpiece,
wherein the first microphone is positioned close enough to the port to cause coupling between the first microphone and the driver.