公开(公告)号：US20130191120A1

公开(公告)日：2013-07-25

申请号：US13748949

申请日：2013-01-24

Applicant: Broadcom Corporation

Inventor： Robert W. Zopf ,  Juin-Hwey Chen

IPC: G10L19/005

CPC classification number: G10L19/005 ,  G10L19/12

Abstract: Methods, systems, and apparatuses for performing packet loss concealment are disclosed. In response to determining that an encoded frame representing a segment of a signal is bad, an encoded parameter within the encoded frame is decoded based on bit information (such as soft bit information) associated with the encoded parameter to obtain a decoded parameter. Whether the decoded parameter violates a parameter constraint is determined. If a parameter constraint violation is detected, an estimate of the decoded parameter is generated. Either the decoded parameter or estimate of the decoded parameter is passed to a decoder for use in decoding the encoded frame.

Abstract translation: 公开了用于执行分组丢失隐藏的方法，系统和装置。 响应于确定表示信号的段的编码帧是坏的，基于与编码参数相关联的比特信息（诸如软比特信息）来对编码帧内的编码参数进行解码以获得解码参数。 确定解码参数是否违反参数约束。 如果检测到参数约束违规，则生成解码参数的估计。 解码的参数或解码参数的估计被传递到解码器以用于解码编码帧。

公开(公告)号：US20130142037A1

公开(公告)日：2013-06-06

申请号：US13754313

申请日：2013-01-30

Applicant: BROADCOM CORPORATION

Inventor： Juin-Hwey Chen

IPC: H04L12/56

CPC classification number: H04L47/365 ,  H04L47/10 ,  H04L47/12 ,  H04L47/24 ,  H04L47/36 ,  H04L65/1083 ,  H04L65/80 ,  H04W28/06

Abstract: A system and method for modifying the size of data packets transmitted over a packet network in a manner that avoids overloading of the network. The system and method involves monitoring one or more parameters indicative of an amount of bandwidth being utilized on the packet network, responsive to the monitoring, determining that a level of bandwidth utilization on the packet network has changed, responsive to the determination that the level of bandwidth utilization on the packet network has changed, issuing a command to change the size of packets used for carrying data from a first packet size to a second packet size.

Abstract translation: 一种系统和方法，用于以避免网络过载的方式修改通过分组网络传输的数据分组的大小。 该系统和方法涉及监视指示在分组网络上正在使用的带宽量的一个或多个参数，响应于监视，确定分组网络上的带宽利用水平已经改变，响应于确定水平 分组网络上的带宽利用率已经改变，发出用于将用于从第一分组大小携带数据的分组的大小改变为第二分组大小的命令。

公开(公告)号：US09361901B2

公开(公告)日：2016-06-07

申请号：US14145775

申请日：2013-12-31

Applicant: Broadcom Corporation

Inventor： Wilfrid LeBlanc ,  Jes Thyssen ,  Juin-Hwey Chen

IPC: G10L21/0208 ,  G10L19/012 ,  G10L21/0232

CPC classification number: G10L21/0208 ,  G10L19/012 ,  G10L21/0232

Abstract: A system and method is described that improves the intelligibility of a far-end telephone speech signal to a user of a telephony device in the presence of near-end background noise. As described herein, the system and method improves the intelligibility of the far-end telephone speech signal in a manner that does not require user input and that minimizes the distortion of the far-end telephone speech signal. The system is integrated with an acoustic echo canceller and shares information therewith.

Abstract translation: 描述了一种在存在近端背景噪声的情况下提高远端电话语音信号给​​电话设备的用户的可懂度的系统和方法。 如这里所述，该系统和方法以不需要用户输入并使远端电话语音信号的失真最小化的方式提高了远端电话语音信号的可懂度。 该系统与声学回声消除器集成并与其共享信息。

公开(公告)号：US09036826B2

公开(公告)日：2015-05-19

申请号：US13720672

申请日：2012-12-19

Applicant: Broadcom Corporation

Inventor： Jes Thyssen ,  Huaiyu Zeng ,  Nelson Sollenberger ,  Juin-Hwey Chen

IPC: H04B3/20 ,  H04M9/08

CPC classification number: H04M9/082

Abstract: A system that utilizes closed-form solutions to perform echo cancellation is described. The system includes a filter, filter parameter determination logic and a combiner. The filter is configured to process a far-end audio signal in accordance with one or more filter parameters to generate an estimated echo signal. The filter parameter determination logic is configured to update estimated statistics associated with the far-end audio signal and a microphone signal based on instantaneous statistics associated with the far-end audio signal and the microphone signal, and calculate the one or more filter parameters based upon the updated estimated statistics. The combiner is configured to generate an estimated near-end audio signal by subtracting the estimated echo signal from the microphone signal.

Abstract translation: 描述了利用闭式解决方案来执行回波消除的系统。 该系统包括滤波器，滤波器参数确定逻辑和组合器。 滤波器被配置为根据一个或多个滤波器参数处理远端音频信号以产生估计回波信号。 滤波器参数确定逻辑被配置为基于与远端音频信号和麦克风信号相关联的瞬时统计信息来更新与远端音频信号相关联的估计统计量和麦克风信号，并且基于以下方式计算一个或多个滤波器参数 更新的估计统计数据。 组合器被配置为通过从麦克风信号中减去估计的回波信号来产生估计的近端音频信号。

公开(公告)号：US20140286497A1

公开(公告)日：2014-09-25

申请号：US14216769

申请日：2014-03-17

Applicant: Broadcom Corporation

Inventor： Jes Thyssen ,  Ashutosh Pandey ,  Bengt J. Borgstrom ,  Daniele Giacobello ,  Juin-Hwey Chen

IPC: G10K11/16 ,  H04R3/00

CPC classification number: H04R3/005 ,  H04R29/006 ,  H04R2203/12 ,  H04R2410/01 ,  H04R2430/21 ,  H04R2430/23 ,  H04R2430/25

Abstract: Methods, systems, and apparatuses are described for improved multi-microphone source tracking and noise suppression. In multi-microphone devices and systems, frequency domain acoustic echo cancellation is performed on each microphone input, and microphone levels and sensitivity are normalized. Methods, systems, and apparatuses are also described for improved acoustic scene analysis and source tracking using steered null error transforms, on-line adaptive acoustic scene modeling, and speaker-dependent information. Switched super-directive beamforming reinforces desired audio sources and closed-form blocking matrices suppress desired audio sources based on spatial information derived from microphone pairings. Underlying statistics are tracked and used to updated filters and models. Automatic detection of single-user and multi-user scenarios, and single-channel suppression using spatial information, non-spatial information, and residual echo are also described.

Abstract translation: 描述了改进的多麦克风源跟踪和噪声抑制的方法，系统和装置。 在多麦克风设备和系统中，在每个麦克风输入端执行频域声学回声消除，并对麦克风电平和灵敏度进行归一化。 还描述了用于改进的声场分析和源跟踪的方法，系统和装置，其使用转向零误差变换，在线自适应声场建模和与扬声器相关的信息。 开关超方向波束成形加强了所需的音频源，并且封闭形式的阻塞矩阵基于从麦克风配对得到的空间信息来抑制所需音频源。 跟踪统计信息，并用于更新过滤器和模型。 还描述了单用户和多用户场景的自动检测，以及使用空间信息，非空间信息和残余回声的单信道抑制。

公开(公告)号：US20140188466A1

公开(公告)日：2014-07-03

申请号：US14145775

申请日：2013-12-31

Applicant: BROADCOM CORPORATION

Inventor： Wilfrid LeBlanc ,  Jes Thyssen ,  Juin-Hwey Chen

IPC: G10L19/012

CPC classification number: G10L21/0208 ,  G10L19/012 ,  G10L21/0232

Abstract: A system and method is described that improves the intelligibility of a far-end telephone speech signal to a user of a telephony device in the presence of near-end background noise. As described herein, the system and method improves the intelligibility of the far-end telephone speech signal in a manner that does not require user input and that minimizes the distortion of the far-end telephone speech signal. The system is integrated with an acoustic echo canceller and shares information therewith.

Abstract translation: 描述了一种在存在近端背景噪声的情况下提高远端电话语音信号给​​电话设备的用户的可懂度的系统和方法。 如这里所述，该系统和方法以不需要用户输入并使远端电话语音信号的失真最小化的方式提高了远端电话语音信号的可懂度。 该系统与声学回声消除器集成并与其共享信息。

公开(公告)号：US20130216057A1

公开(公告)日：2013-08-22

申请号：US13720672

申请日：2012-12-19

Applicant: Broadcom Corporation

Inventor： Jes Thyssen ,  Huaiyu Zeng ,  Nelson Sollenberger ,  Juin-Hwey Chen

IPC: H04M9/08

CPC classification number: H04M9/082

Abstract: A system that utilizes closed-form solutions to perform echo cancellation is described. The system includes a filter, filter parameter determination logic and a combiner. The filter is configured to process a far-end audio signal in accordance with one or more filter parameters to generate an estimated echo signal. The filter parameter determination logic is configured to update estimated statistics associated with the far-end audio signal and a microphone signal based on instantaneous statistics associated with the far-end audio signal and the microphone signal, and calculate the one or more filter parameters based upon the updated estimated statistics. The combiner is configured to generate an estimated near-end audio signal by subtracting the estimated echo signal from the microphone signal.

Abstract translation: 描述了利用闭式解决方案来执行回波消除的系统。 该系统包括滤波器，滤波器参数确定逻辑和组合器。 滤波器被配置为根据一个或多个滤波器参数处理远端音频信号以产生估计回波信号。 滤波器参数确定逻辑被配置为基于与远端音频信号和麦克风信号相关联的瞬时统计信息来更新与远端音频信号相关联的估计统计量和麦克风信号，并且基于以下方式计算一个或多个滤波器参数 更新的估计统计数据。 组合器被配置为通过从麦克风信号中减去估计的回波信号来产生估计的近端音频信号。