公开(公告)号：US20150154977A1

公开(公告)日：2015-06-04

申请号：US14175794

申请日：2014-02-07

Applicant: Microsoft Corporation

Inventor： Lars Anders Ekman ,  Jesus de Vicente Peña

IPC: G10L21/02 ,  G10K11/175

CPC classification number: G10K11/175 ,  G10L21/0208 ,  G10L25/03 ,  G10L2021/02082 ,  H04M9/082

Abstract: Disclosed is a computer system comprising an audio processing module, an echo cancellation module and a control module. The audio processing module is configured to process an audio signal and output the processed audio signal to e.g. a speaker (or similar) of the system. The echo cancellation module is configured to cancel echo from an audio signal received via e.g. a microphone (or similar) of the system. The control module is configured to detect a condition indicative of nonlinear amplitude processing by the audio processing module and control said echo cancellation by the echo cancellation module based on the detected condition.

Abstract translation: 公开了一种包括音频处理模块，回声消除模块和控制模块的计算机系统。 音频处理模块被配置为处理音频信号并将经处理的音频信号输出到例如音频信号。 系统的扬声器（或类似的）。 回波消除模块被配置为从例如接收到的音频信号中消除回波。 系统的麦克风（或类似的）。 控制模块被配置为检测由音频处理模块指示非线性幅度处理的条件，并且基于检测到的条件来控制回声消除模块的所述回波消除。

公开(公告)号：US08971522B2

公开(公告)日：2015-03-03

申请号：US14013919

申请日：2013-08-29

Applicant: Microsoft Corporation

Inventor： Jesus de Vicente Peña ,  Per Ahgren

IPC: H04M9/08 ,  G10K11/16

CPC classification number: G10K11/16 ,  G10L21/0208 ,  H04M9/082

Abstract: A method of reducing noise in an acoustic system, the method comprising at a first user terminal: receiving an audio signal from at least one further user terminal over a network; executing a communication client on a processing unit, the client configured so as when executed to: supply the audio signal to an audio signal processing module of the first user terminal, wherein the processing module processes the audio signal, whereby a level of gain is applied to the audio signal, and outputs a processed audio signal to a speaker; estimate a noise level of the audio signal and the processed audio signal and estimate the gain applied by the processing module taking into account both the noise level estimates; selectively apply a system gain reduction step to at least one of the audio signal and an audio signal received via a microphone, based on at least the estimated gain.

Abstract translation: 一种降低声学系统噪声的方法，所述方法包括在第一用户终端：通过网络从至少一个另外的用户终端接收音频信号; 在处理单元上执行通信客户端，所述客户端被配置为当被执行时：将所述音频信号提供给所述第一用户终端的音频信号处理模块，其中所述处理模块处理所述音频信号，由此应用增益水平 将音频信号输出到扬声器; 估计音频信号和经处理的音频信号的噪声水平，并且考虑到噪声水平估计两者来估计由处理模块应用的增益; 至少基于估计的增益，选择性地将系统增益降低步骤应用于经由麦克风接收的音频信号和音频信号中的至少一个。

公开(公告)号：US20150110134A1

公开(公告)日：2015-04-23

申请号：US14184492

申请日：2014-02-19

Applicant: MICROSOFT CORPORATION

Inventor： Ermin Kozica ,  Wei Chen ,  David Yuheng Zhao ,  Christoffer Asgaard Rödbro ,  Jesus de Vicente Peña

IPC: H04L7/00 ,  H04N5/04 ,  H04L29/06

CPC classification number: H04L7/0041 ,  H04L7/00 ,  H04L7/0033 ,  H04L65/601 ,  H04L65/80 ,  H04N5/04 ,  H04N21/4307 ,  H04N21/4392 ,  H04N21/44004

Abstract: A receiver receives a first data stream and a second data stream from a transmitting device over a packet-based communication network, the first data stream being of a first media type (e.g. audio) and the second data stream being of a second media type (e.g. video). The first jitter buffer will buffer each of a plurality of portions of the first data stream as they are received via the receiver, and apply a de-jittering delay before outputting each portion of the first data stream (e.g. audio stream) to be played out through the receiving device. The jitter buffer controller receives information on the second data stream (e.g. video stream), and adapts the de-jittering delay of the first jitter buffer (e.g. audio jitter buffer) in dependence on the information on the second data stream (e.g. information on the video stream).

Abstract translation: 接收机通过基于分组的通信网络从发送设备接收第一数据流和第二数据流，第一数据流是第一媒体类型（例如，音频），第二数据流是第二媒体类型（ 例如视频）。 第一抖动缓冲器将经由接收器接收第一数据流的多个部分中的每一个，并在输出要播放的第一数据流（例如音频流）的每个部分之前应用去抖动延迟 通过接收设备。 抖动缓冲器控制器接收关于第二数据流（例如，视频流）的信息，并且根据关于第二数据流的信息（例如关于第二数据流的信息）来适应第一抖动缓冲器（例如，音频抖动缓冲器）的去抖动延迟 视频流）。

公开(公告)号：US20140334631A1

公开(公告)日：2014-11-13

申请号：US14013919

申请日：2013-08-29

Applicant: Microsoft Corporation

Inventor： Jesus de Vicente Peña ,  Per Ahgren

IPC: G10K11/16

CPC classification number: G10K11/16 ,  G10L21/0208 ,  H04M9/082

Abstract: A method of reducing noise in an acoustic system, the method comprising at a first user terminal: receiving an audio signal from at least one further user terminal over a network; executing a communication client on a processing unit, the client configured so as when executed to: supply the audio signal to an audio signal processing module of the first user terminal, wherein the processing module processes the audio signal, whereby a level of gain is applied to the audio signal, and outputs a processed audio signal to a speaker; estimate a noise level of the audio signal and the processed audio signal and estimate the gain applied by the processing module taking into account both the noise level estimates; selectively apply a system gain reduction step to at least one of the audio signal and an audio signal received via a microphone, based on at least the estimated gain.

Abstract translation: 一种降低声学系统噪声的方法，所述方法包括在第一用户终端：通过网络从至少一个另外的用户终端接收音频信号; 在处理单元上执行通信客户端，所述客户端被配置为当被执行时：将所述音频信号提供给所述第一用户终端的音频信号处理模块，其中所述处理模块处理所述音频信号，由此应用增益水平 将音频信号输出到扬声器; 估计音频信号和经处理的音频信号的噪声水平，并且考虑到噪声水平估计两者来估计由处理模块应用的增益; 至少基于估计的增益，选择性地将系统增益降低步骤应用于经由麦克风接收的音频信号和音频信号中的至少一个。