US 12,451,111 B2
Wearable audio device with feedback instability control
Benjamin Jason Krosner, Bedford, MA (US)
Assigned to Bose Corporation, Framingham, MA (US)
Filed by Bose Corporation, Framingham, MA (US)
Filed on Mar. 18, 2024, as Appl. No. 18/608,019.
Application 18/608,019 is a continuation of application No. 18/234,067, filed on Aug. 15, 2023, granted, now 11,961,502.
Prior Publication US 2025/0061876 A1, Feb. 20, 2025
This patent is subject to a terminal disclaimer.
Int. Cl. G10K 11/178 (2006.01); H04R 1/10 (2006.01)
CPC G10K 11/178 (2013.01) [H04R 1/1083 (2013.01); G10K 2210/503 (2013.01); G10K 2210/506 (2013.01); H04R 2460/01 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of controlling feedback instability in a wearable audio device with an active noise reduction (ANR) system, the method comprising:
determining a current feedback instability by combining outputs from multiple instability detectors,
applying latch logic to the current feedback instability to determine a current mitigation value,
wherein applying the latch logic comprises:
applying a baseline mitigation value associated with a baseline instability as the current mitigation value, and
modifying the current mitigation value in response to determining that the current feedback instability exceeds the baseline instability as controlled by a latch mechanism; and
adjusting a driver command signal based on the current mitigation value to mitigate feedback instability, wherein the baseline mitigation value is a lowest available multiplier that can be applied to the driver command signal.