公开(公告)号：US09773491B2

公开(公告)日：2017-09-26

申请号：US14856062

申请日：2015-09-16

Applicant: Bose Corporation

Inventor： Emery Ku ,  Paraskevas Argyropoulos

IPC: A61F11/06 ,  G10K11/16 ,  G10K11/178

CPC classification number: G10K11/178 ,  G10K2210/1282 ,  G10K2210/30232 ,  G10K2210/3028 ,  G10K2210/3055

Abstract: The technology described in this document can be embodied in a computer-implemented method that includes receiving a first plurality of values representing a set of current coefficients of an adaptive filter disposed in an active noise cancellation system. The method also includes computing a second plurality of values each of which represents an instantaneous difference between a current coefficient and a corresponding preceding coefficient of the adaptive filter, and estimating, based on the second plurality of values, one or more instantaneous magnitudes of a transfer function that represents an effect of a secondary path of the active noise cancellation system. The method further includes updating the first plurality of values based on estimates of the one or more instantaneous magnitudes to generate a set of updated coefficients for the adaptive filter, and programming the adaptive filter with the set of updated coefficients.

公开(公告)号：US20190045064A1

公开(公告)日：2019-02-07

申请号：US15667988

申请日：2017-08-03

Applicant: BOSE CORPORATION

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

IPC: H04M9/08 ,  H04B3/23 ,  H04B1/3822

Abstract: Audio systems and methods are provided to reduce echo content in an audio signal. The systems and methods receive an audio signal and sound stage rendering parameter(s), and select a set of filter coefficients to filter the audio signal to provide an estimated echo signal. The estimated echo signal is subtracted from a microphone signal to provide an output signal with reduced echo content. The set of filter coefficients are selected based upon the sound stage rendering parameter(s) from among a plurality of stored sets of filter coefficients.

公开(公告)号：US20180308504A1

公开(公告)日：2018-10-25

申请号：US16016976

申请日：2018-06-25

Applicant: BOSE CORPORATION

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

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

CPC classification number: G10L21/0232 ,  G10L21/0208 ,  G10L21/0364 ,  G10L25/78 ,  G10L2021/02082 ,  G10L2021/02087 ,  G10L2021/02166 ,  H03G5/165 ,  H04R3/005 ,  H04R2499/13 ,  H04S7/301

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：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.