公开(公告)号：US20140349638A1

公开(公告)日：2014-11-27

申请号：US13925555

申请日：2013-06-24

Applicant: Broadcom Corporation

Inventor： Taro Umezawa ,  Franck Beaucoup

IPC: H04M9/08

CPC classification number: H04M9/082 ,  G10L2021/02082 ,  H04B1/109 ,  H04M3/002 ,  H04W24/02

Abstract: Methods, systems, and apparatus for controlling audio signal processing are described herein. In accordance with certain embodiments, a measure of coupling between at least one microphone and one speaker associated with an audio device is obtained. The measure of coupling may be used to control audio signal processing, such as sidetone generation and application of multi-channel decorrelation to the audio signal.

Abstract translation: 本文描述了用于控制音频信号处理的方法，系统和装置。 根据某些实施例，获得了与音频设备相关联的至少一个麦克风和一个扬声器之间的耦合度量。 耦合的措施可以用于控制音频信号处理，例如侧音生成和对音频信号的多声道去相关的应用。

公开(公告)号：US09491306B2

公开(公告)日：2016-11-08

申请号：US13925555

申请日：2013-06-24

Applicant: Broadcom Corporation

Inventor： Taro Umezawa ,  Franck Beaucoup

IPC: H04B1/38 ,  H04M9/08 ,  H04M3/00 ,  H04W24/02 ,  H04B1/10 ,  G10L21/0208

CPC classification number: H04M9/082 ,  G10L2021/02082 ,  H04B1/109 ,  H04M3/002 ,  H04W24/02

Abstract: Methods, systems, and apparatus for controlling audio signal processing are described herein. In accordance with certain embodiments, a measure of coupling between at least one microphone and one speaker associated with an audio device is obtained. The measure of coupling may be used to control audio signal processing, such as sidetone generation and application of multi-channel decorrelation to the audio signal.

Abstract translation: 本文描述了用于控制音频信号处理的方法，系统和装置。 根据某些实施例，获得了与音频设备相关联的至少一个麦克风和一个扬声器之间的耦合度量。 耦合的措施可以用于控制音频信号处理，例如侧音生成和对音频信号的多声道去相关的应用。

公开(公告)号：US20140307882A1

公开(公告)日：2014-10-16

申请号：US13893883

申请日：2013-05-14

Applicant: Broadcom Corporation

Inventor： Wilf LeBlanc ,  Franck Beaucoup

IPC: H04R3/00

CPC classification number: H04S7/305 ,  H04S2400/13

Abstract: Methods, systems, and apparatuses are described for performing acoustic echo cancellation with internal upmixing that allow for a more effective handling of acoustic echo cancellation of audio components that are provided via different channels. In an embodiment in which audio is played back using two loudspeakers, audio components that are panned equally among the loudspeakers form a “phantom center image.” Acoustic echo cancellation is performed by initially upmixing the different channels to internally create modified versions of these channels and a virtual channel representative of the phantom center image. Each of these channels is passed through a respective adaptive filter that is configured to estimate an acoustic echo produced by each respective channel. These estimates are then subtracted from the signal received from one or more microphones (or from a signal obtained by combining multiple microphone signals) to suppress or eliminate the acoustic echo.

Abstract translation: 描述了用于通过内部上混进行声学回声消除的方法，系统和装置，其允许更有效地处理经由不同通道提供的音频分量的声学回声消除。 在使用两个扬声器播放音频的实施例中，在扬声器之间平等地播放的音频组件形成“幻影中心图像”。声学回声消除通过首先将不同频道上混合来内部创建这些频道的修改版本来执行， 虚拟频道代表幻影中心图像。 这些通道中的每一个通过相应的自适应滤波器，其被配置为估计由每个相应通道产生的声学回声。 然后从从一个或多个麦克风接收的信号（或从通过组合多个麦克风信号获得的信号）中减去这些估计值，以抑制或消除声学回声。

公开(公告)号：US09491561B2

公开(公告)日：2016-11-08

申请号：US13893883

申请日：2013-05-14

Applicant: Broadcom Corporation

Inventor： Wilf LeBlanc ,  Franck Beaucoup

IPC: H04B3/20 ,  H04S7/00

CPC classification number: H04S7/305 ,  H04S2400/13

Abstract: Methods, systems, and apparatuses are described for performing acoustic echo cancellation with internal upmixing that allow for a more effective handling of acoustic echo cancellation of audio components that are provided via different channels. In an embodiment in which audio is played back using two loudspeakers, audio components that are panned equally among the loudspeakers form a “phantom center image.” Acoustic echo cancellation is performed by initially upmixing the different channels to internally create modified versions of these channels and a virtual channel representative of the phantom center image. Each of these channels is passed through a respective adaptive filter that is configured to estimate an acoustic echo produced by each respective channel. These estimates are then subtracted from the signal received from one or more microphones (or from a signal obtained by combining multiple microphone signals) to suppress or eliminate the acoustic echo.

Abstract translation: 描述了用于通过内部上混进行声学回声消除的方法，系统和装置，其允许更有效地处理经由不同通道提供的音频分量的声学回声消除。 在使用两个扬声器播放音频的实施例中，在扬声器之间平等地播放的音频组件形成“幻影中心图像”。声学回声消除通过首先将不同频道上混合来内部创建这些频道的修改版本来执行， 虚拟频道代表幻影中心图像。 这些通道中的每一个通过相应的自适应滤波器，其被配置为估计由每个相应通道产生的声学回声。 然后从从一个或多个麦克风接收的信号（或从通过组合多个麦克风信号获得的信号）中减去这些估计值，以抑制或消除声学回声。

公开(公告)号：US20140119552A1

公开(公告)日：2014-05-01

申请号：US13680787

申请日：2012-11-19

Applicant: BROADCOM CORPORATION

Inventor： Franck Beaucoup

IPC: H04B3/23

CPC classification number: H04M9/082

Abstract: Embodiments of the present disclosure provide systems and methods for source localization using a microphone array. Such an embodiment, among others, utilizes circuitry to process audio signals and microphone signals to remove an echo (produced by a nearby loudspeaker) from the microphone signals using a plurality of adaptive echo cancellation filters. Location information is then determined for the loudspeaker based on the plurality of adaptive echo cancellation filters used to remove the echo.

Abstract translation: 本公开的实施例提供了使用麦克风阵列的源定位的系统和方法。 这样的实施例尤其利用电路来处理音频信号和麦克风信号，以使用多个自适应回声消除滤波器从麦克风信号中去除回声（由附近的扬声器产生）。 然后基于用于去除回波的多个自适应回波消除滤波器，确定扬声器的位置信息。