公开(公告)号：US10049686B1

公开(公告)日：2018-08-14

申请号：US15431029

申请日：2017-02-13

Applicant: BOSE CORPORATION

Inventor： Cristian M. Hera ,  Jeffery R. Vautin ,  Elie Bou Daher ,  Paraskevas Argyropoulos ,  Vigneish Kathavarayan

IPC: G10L21/0232 ,  H03G5/16 ,  H04R1/40 ,  G10L21/0364 ,  G10L25/78 ,  H04R1/02 ,  H04R3/04 ,  G10L21/0216 ,  G10L21/0208

Abstract: Audio systems and methods for providing intelligible audio content within a vehicle cabin. In one example, the audio system includes a first speaker to provide first audio content to a first seating position based on an audio signal received from an audio signal source, a second speaker to provide second audio content to a second seating position, a first microphone assembly positioned to detect speech content originating at the second seating position, leaked second audio content from the second speaker, and road noise, and audio signal processing circuitry configured to determine a perturbing signal based at least in part on a combination of the first speech content, the leaked second audio content, and the road noise, and adjust the audio signal to the first speaker to compensate for an effect of the perturbing signal on the first audio content at the first seating position.

公开(公告)号：US12154585B2

公开(公告)日：2024-11-26

申请号：US17680559

申请日：2022-02-25

Applicant: Bose Corporation

Inventor： Elie Bou Daher ,  Vigneish Kathavarayan ,  Cristian Marius Hera

IPC: G10L25/84 ,  G10L21/0224 ,  G10L25/78 ,  G10L21/0208 ,  G10L21/0216

Abstract: Methods, systems, and computer-readable media are provided for detecting voice activity. A primary signal is configured to include a speech component representative of a user's speech when the user is speaking in a detection region, or environment. A reference signal is configured to include a reduced speech component relative to the primary signal. One or more conditions of the detection region is/are detected, and a threshold value is selected (or, optionally, calculated) based upon the detected condition(s). The primary signal is compared to the reference signal, with respect to the selected threshold value. An indication of whether the user is speaking is selectively output, based at least in part upon the comparison.

公开(公告)号：US11514922B1

公开(公告)日：2022-11-29

申请号：US17339332

申请日：2021-06-04

Applicant: Bose Corporation

Inventor： Elie Bou Daher ,  Cristian M. Hera ,  Vigneish Kathavarayan

IPC: G10L21/0232 ,  H04R1/02 ,  H04R1/40 ,  H04R3/12 ,  H04R1/08 ,  G10L21/028 ,  G10L21/0208 ,  G10L21/0216

Abstract: A method for preparing reference signals for an echo cancellation system disposed in a vehicle, comprising the steps of: receiving a plurality of drive signals, each drive signal being provided to an associated transducer of a plurality of acoustic transducers such that the associated acoustic transducer transduces the drive signal into an acoustic signal, filtering each drive signal with a respective filter of a plurality of filters to produce a plurality of filtered signals, wherein each of the plurality of filters approximates a transfer function from an associated acoustic transducer to a microphone disposed within the vehicle such that the plurality of filtered signals each estimate a respective acoustic signal at the microphone; summing together at least a subset of the plurality of filtered signals to produce a summed reference signal; and outputting the summed reference signal to an echo cancellation system.

公开(公告)号：US11044556B2

公开(公告)日：2021-06-22

申请号：US16456570

申请日：2019-06-28

Applicant: Bose Corporation

Inventor： Cristian M. Hera ,  Elie Bou Daher ,  Tobe Z. Barksdale ,  Vigneish Kathavarayan ,  Ankita D. Jain

IPC: H04R3/02 ,  G10L21/0208

Abstract: An audio system, including an echo canceler being configured to receive a first reference signal and a microphone signal, and to minimize an echo signal of the microphone signal, according to the first reference signal, the echo signal being a component of the microphone signal correlated to the first reference signal, to produce a residual signal; a post filter configured to receive a second reference signal and the residual signal, and to suppress at least one residual component correlated to the second reference signal, according to the second reference signal, to produce an estimated voice signal, wherein the first reference signal is received from a first location of an audio processing chain and the second reference signal is received from a second location of the audio processing chain, the first location and the second location being separated by at least one audio processing module of the audio processing chain.

公开(公告)号：US11017792B2

公开(公告)日：2021-05-25

申请号：US16443292

申请日：2019-06-17

Applicant: Bose Corporation

Inventor： Cristian M. Hera ,  Elie Bou Daher ,  Jeffery R. Vautin ,  Vigneish Kathavarayan ,  Ankita D. Jain ,  Tobe Z. Barksdale

IPC: G10L21/0216 ,  G10L21/0308 ,  G10L21/0208

Abstract: An audio system includes: a head unit comprising at least a first processor, the head unit being configured to generate a plurality of program content signals, one of the plurality of program content signals being a phone program content signal being received from a phone, wherein the plurality of program content signals are transduced by an acoustic transducer into an acoustic signal within a vehicle cabin; a microphone disposed within the vehicle cabin such that the microphone receives the acoustic signal and produces a microphone signal comprising a plurality of echo signals; and a multichannel echo-cancellation unit being implemented by a second processor, the multichannel echo-cancellation unit being configured to receive a plurality of reference signals and to minimize the plurality of echo signals, according to the plurality of reference signals, to produce an estimated voice signal, and to provide the estimated voice signal to the head unit.

公开(公告)号：US20190104360A1

公开(公告)日：2019-04-04

申请号：US16149658

申请日：2018-10-02

Applicant: BOSE CORPORATION

Inventor： Elie Bou Daher ,  Cristian M. Hera ,  Vigneish Kathavarayan ,  Tobe Z. Barksdale

IPC: H04R3/00 ,  H04R1/40 ,  G10L25/21 ,  G10L25/78

Abstract: Double-talk detection systems and methods are provided that include a plurality of microphones and array processing to detect when a vehicle occupant is speaking. One or more array processors combine the microphone signals to provide a primary signal and a reference signal. The responses of the primary signal and the reference signal are different in the direction of an occupant location. A comparison of energy content is made between the primary signal and reference signal to selectively indicate double-talk based on the comparison.