公开(公告)号：US11812217B2

公开(公告)日：2023-11-07

申请号：US17714561

申请日：2022-04-06

Applicant: Bose Corporation

Inventor： Alaganandan Ganeshkumar

IPC: H04R1/10 ,  G10K11/178

CPC classification number: H04R1/1083 ,  G10K11/17815 ,  G10K11/17873 ,  G10K11/17875 ,  G10K2210/1081 ,  G10K2210/3026 ,  G10K2210/3027

Abstract: Various implementations include systems for processing inner microphone audio signals. In particular implementations, a system includes an external microphone configured to be acoustically coupled to an environment outside an ear canal of a user; an inner microphone configured to be acoustically coupled to an environment inside the ear canal of the user; and an adaptive noise cancelation system configured to process an internal signal captured by the inner microphone and generate a noise reduced internal signal, wherein the noise reduced internal signal is adaptively generated in response to an external signal captured by the external microphone.

公开(公告)号：US11671777B2

公开(公告)日：2023-06-06

申请号：US17126630

申请日：2020-12-18

Applicant: Bose Corporation

Inventor： Douglas Warren Young ,  Nathan A. Blagrove ,  Rasmus Abildgren ,  Casper Stork Bonde ,  Alaganandan Ganeshkumar

IPC: H04R29/00 ,  H04W4/38 ,  H04W76/14 ,  G10L25/21 ,  G10L25/51 ,  G10L25/78 ,  H04R1/40 ,  H04R3/00

CPC classification number: H04R29/005 ,  G10L25/21 ,  G10L25/51 ,  G10L25/78 ,  H04R1/406 ,  H04R3/005 ,  H04W4/38 ,  H04W76/14

Abstract: A system and method for selecting audio capture sensors of wearable devices in obtaining voice data. The method provides obtaining signals associated with the user's voice at first and second wearable devices, comparing energy levels of the first and second signals, and selecting one or more audio capture sensors based on the energy levels of each signal. Due to the symmetry of the acoustic energy produced by the user's voice to a first and second wearable device, any difference in energy level between the total energy obtained by the first wearable device and the total energy obtained by the second wearable device can be attributed solely to ambient noise. Thus, the device with the higher total energy has a lower signal-to-noise ratio and selection of an audio capture sensor of the other wearable device with a higher signal-to-noise ratio is provided to obtain voice data moving forward.

公开(公告)号：US11058165B2

公开(公告)日：2021-07-13

申请号：US16571425

申请日：2019-09-16

Applicant: Bose Corporation

Inventor： Matthew Christopher Smith ,  Alaganandan Ganeshkumar ,  Thomas David Chambers ,  Richard Lionel Lanoue, III

IPC: A42B3/30 ,  G10L25/48 ,  H04R1/08 ,  H04R1/10

Abstract: Various implementations include a wearable audio device for enhancing the acoustic response proximate a user, for example, in the direction of the user's mouth. In particular implementations, a wearable audio device includes: a head mount having: a crown portion for resting on a head of a user, and a brim extending from the crown portion in a forward-oriented direction; and a plurality of microphones coupled to the brim of the head mount.

公开(公告)号：US20200349962A1

公开(公告)日：2020-11-05

申请号：US16930557

申请日：2020-07-16

Applicant: Bose Corporation

Inventor： Alaganandan Ganeshkumar ,  Xiang-Ern Yeo ,  Mehmet Ergezer

IPC: G10L21/02 ,  G10L21/0232 ,  H04R1/40 ,  H04R1/10 ,  G10L21/0216 ,  H04R5/033 ,  G10L21/0208

Abstract: A headphone, headphone system, and speech enhancing method is provided to enhance speech pick-up from the user of a headphone and includes receiving a plurality of signals from a set of microphones and generating a primary signal by array processing the microphone signals to steer a beam toward the user's mouth. A noise reference signal is also derived from one or more microphones via a delay-and-sum technique, and a voice estimate signal is generated by filtering the primary signal to remove components that are correlated to the noise reference signal.

公开(公告)号：US10762915B2

公开(公告)日：2020-09-01

申请号：US16442956

申请日：2019-06-17

Applicant: BOSE CORPORATION

Inventor： Xiang-Ern Yeo ,  Mehmet Ergezer ,  Alaganandan Ganeshkumar

IPC: G10L25/78 ,  H04R1/10 ,  H04R3/00 ,  G10L25/21 ,  G10L25/51 ,  H04R1/40 ,  G10L25/93

Abstract: A headphone system is provided that includes a first earpiece, a first front microphone coupled to the first earpiece to receive a first acoustic signal, a first rear microphone coupled to the first earpiece to receive a second acoustic signal, the second acoustic signal being toward the rear of a user's head relative to the first acoustic signal, and a detection circuit coupled to the first front and rear microphones and configured to compare a front signal derived from the first front microphone to a rear signal derived from the first rear microphone and to selectively indicate that the user is speaking based at least in part upon the comparison.

公开(公告)号：US10575085B1

公开(公告)日：2020-02-25

申请号：US16056046

申请日：2018-08-06

Applicant: Bose Corporation

Inventor： Alaganandan Ganeshkumar ,  Ricardo Carreras

IPC: H04R1/10 ,  G10L21/0224 ,  G10L25/84 ,  H04R1/40 ,  H04R3/00 ,  H04R5/033 ,  H04R5/04 ,  H04R29/00 ,  G10L21/0216

Abstract: An audio device with at least one microphone adapted to receive sound from a sound field and create an output, and a processing system that is responsive to the output of the microphone. The processing system is configured to use a signal processing algorithm to detect speech in the output, detect a predefined trigger event indicating a possible change in the sound field, and modify the signal processing algorithm upon the detection of the predefined trigger event.

公开(公告)号：US10366708B2

公开(公告)日：2019-07-30

申请号：US15463259

申请日：2017-03-20

Applicant: BOSE CORPORATION

Inventor： Xiang-Ern Yeo ,  Mehmet Ergezer ,  Alaganandan Ganeshkumar

IPC: H04R29/00 ,  G10L25/78 ,  H04R1/10 ,  H04R3/00 ,  G10L25/21 ,  G10L25/51 ,  H04R1/40 ,  G10L25/93

Abstract: A headphone system is provided that includes a left and right earpiece having a left and right microphone, respectively, to receive left and right acoustic signals and provide left and right signals for processing. The left and right signals are added to provide a principal signal, and the left and right signals are subtracted to provide a reference signal. A detection circuit compares the principal signal to the reference signal and selectively indicates whether a user is speaking.

公开(公告)号：US20190130885A1

公开(公告)日：2019-05-02

申请号：US15800909

申请日：2017-11-01

Applicant: BOSE CORPORATION

Inventor： Jeremy Kemmerer ,  Alaganandan Ganeshkumar

IPC: G10K11/16 ,  H04R3/00

CPC classification number: G10K11/16 ,  G10K2210/3028 ,  G10L15/22 ,  G10L21/0208 ,  G10L2021/02082 ,  G10L2021/02161 ,  G10L2021/02165 ,  G10L2021/02166 ,  H04R3/005

Abstract: Audio pickup systems and methods are provided to enhance an audio signal by removing noise components related to an acoustic environment. The systems and methods receive a primary signal and a reference signal. The reference signal is adaptively filtered and subtracted from the primary signal to minimize an energy content of a resulting output signal.

公开(公告)号：US20180270565A1

公开(公告)日：2018-09-20

申请号：US15925211

申请日：2018-03-19

Applicant: BOSE CORPORATION

Inventor： Alaganandan Ganeshkumar

IPC: H04R1/10 ,  G10L21/0232 ,  G10L25/21 ,  H03G5/16 ,  H04R1/40 ,  H04R3/00 ,  G10L25/84 ,  G10L21/02

Abstract: Audio device systems and methods are provided to enhance speech pick-up from a user. The systems and methods receive signals from a plurality of microphones coupled to one or more earpieces. The signals are processed using a first array processing technique to enhance their acoustic response from a selected direction, such as a direction of the user's mouth, to provide a primary signal. The signals are also processed using a second array processing technique to enhance response from the selected direction, to provide a secondary signal. The primary signal and the secondary signal are compared, and a selected signal is provided based upon the primary signal, the secondary signal, and the comparison.

公开(公告)号：US09679552B2

公开(公告)日：2017-06-13

申请号：US15098863

申请日：2016-04-14

Applicant: Bose Corporation

Inventor： Alaganandan Ganeshkumar ,  Dennis D. Klug

IPC: A61F11/06 ,  G10K11/178 ,  H04R3/00

CPC classification number: G10K11/178 ,  G10K2210/1282 ,  G10K2210/3028 ,  G10K2210/3032 ,  G10K2210/3054 ,  H04R3/002 ,  H04R2499/13

Abstract: A system and method for reducing harmonic noise caused by two or more noise sources by causing one or more loudspeakers to produce sounds that are at about the same frequencies as the noise and of substantially opposite phase. There is a noise canceller associated with each noise source. Each noise canceller includes a harmonic sine wave generator that generates an output sine wave. Each noise canceller also has an adaptive filter that uses a sine wave to create a noise reduction signal that is used to drive one or more transducers with their outputs directed to reduce noise caused by the noise sources. There is an overlap detector that compares the harmonic frequencies and, based on their proximity, alters the operation of one or more adaptive filters.