US 11,736,853 B2
Active noise reduction in open ear directional acoustic devices
Ankita D. Jain, Westborough, MA (US); Ryan C. Struzik, Hopkinton, MA (US); Dale McElhone, Marlborough, MA (US); and Daniel M. Gauger, Jr., Berlin, MA (US)
Assigned to Bose Corporation, Framingham, MA (US)
Filed by Bose Corporation, Framingham, MA (US)
Filed on Dec. 3, 2021, as Appl. No. 17/541,466.
Application 17/541,466 is a continuation of application No. 16/534,016, filed on Aug. 7, 2019, granted, now 11,197,083.
Prior Publication US 2022/0167072 A1, May 26, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04R 1/10 (2006.01)
CPC H04R 1/105 (2013.01) [H04R 2460/01 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An acoustic device comprising:
an eyeglass frame comprising two arms;
at least one acoustic transducer disposed such that, in a head-worn state, the at least one acoustic transducer is in an open-ear configuration in which an ear canal of a user of the acoustic device is unobstructed;
an array of two or more first microphones disposed along the same arm of the eyeglass frame, the array capturing audio preferentially from a first direction as compared to at least a second direction different from the first direction, wherein the audio captured using the array is processed using a beamforming process to capture audio preferentially from the first direction and is played back through the at least one acoustic transducer, and wherein the first direction is fixed in a direction substantially parallel to the arms of the eyeglass frame;
one or more second microphones that are distinct from the array of two or more first microphones, the one or more second microphones capturing additional audio from a direction of a mouth of the user; and
an active noise reduction (ANR) engine comprising one or more processing devices, the ANR engine configured to generate a driver signal for the at least one acoustic transducer, the driver signal having phases that reduce effects of audio captured from at least the second direction; and
an interface configured to receive a command from the user, wherein the acoustic device is configured to perform one or more functions in response to the received command.