ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,444,399, issued on Oct. 14, was assigned to Bose Corp. (Framingham, Mass.).
"Active damping of resonant canal modes" was invented by John Allen Rule (Berlin, Mass.) and David J. Warkentin (Framingham, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "An active noise reduction (ANR) device includes an acoustic transducer, a first sensor, and a second sensor. The acoustic transducer is configured to generate output audio. The first sensor is configured to capture audio originating from an external environment of the ANR device. The second sensor is configured to generate a signal indicative of (1) the audio originating from the external environment and...