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1. 发明授权

US08724823B2 Method and apparatus for reducing noise pumping due to noise suppression and echo control interaction 有权
标题翻译：用于减少由噪声抑制和回波控制相互作用引起的噪声抽吸的方法和装置
公开(公告)号：US08724823B2
公开(公告)日：2014-05-13
申请号：US13112962
申请日：2011-05-20
申请人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
发明人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
IPC分类号： H04B3/20
CPC分类号： G10L21/0208 , G10L25/18 , G10L2021/02082 , H04M9/082
摘要： An input signal is processed through noise suppression (NS) and echo control (EC) via a multipath model that reduces noise pumping effects while maintaining EC performance. A copy of a “noisy” input signal is sent to an EC component before the noisy signal is sent to a NS component, which processes the signal first, when there is a consistent noise level for estimation. The copy of the pre-processing noisy signal is sent to the EC component along with a “clean” or “noise-suppressed” signal output from the NS component. The EC component analyzes the noisy signal as if the EC was the first component in the signal chain to determine what actions to take. The EC component then applies these actions to the clean signal received from the NS component.
摘要翻译：通过噪声抑制（NS）和回波控制（EC）通过多径模型处理输入信号，可以在保持EC性能的同时降低噪声泵浦效应。在噪声信号被发送到NS分量之前，“噪声”输入信号的副本被发送到EC分量，该NS分量首先处理信号，当存在用于估计的一致的噪声电平时。预处理噪声信号的副本与从NS分量输出的“干净”或“噪声抑制”信号一起发送到EC分量。 EC组件分析噪声信号，就好像EC是信号链中的第一个组件，以确定采取什么行动。 EC组件然后将这些动作应用于从NS组件接收的干净信号。

2. 发明授权

US08320577B1 Method and apparatus for multi-channel audio processing using single-channel components 有权
标题翻译：使用单通道组件进行多声道音频处理的方法和装置
公开(公告)号：US08320577B1
公开(公告)日：2012-11-27
申请号：US13112958
申请日：2011-05-20
申请人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
发明人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
IPC分类号： H03B29/00 , H04M9/08 , H04B3/20
CPC分类号： H04M9/08 , G10L19/008 , G10L2021/02082
摘要： Processing multi-channel audio streams using one or more arrangements of single-channel components. Components that only process the near-end, or capture stream, such as noise suppression (NS) components, are limited in how they can be suitably arranged for processing multi-channel streams. However, components that process the near-end stream using one or more inputs from the far-end, or render stream, such as acoustic echo cancellation (AEC) and automatic gain control (AGC) components, are arranged in one or more of the ways suitable for use with multiple channels.
摘要翻译：使用单通道组件的一个或多个排列来处理多声道音频流。仅处理近端或捕获流（例如噪声抑制（NS））组件的组件在如何适当地布置用于处理多信道流的方面受到限制。然而，使用来自远端的一个或多个输入或诸如声学回声消除（AEC）和自动增益控制（AGC））组件的渲染流来处理近端流的组件被布置在一个或多个适合多个渠道使用的方式。

3. 发明授权

US08983085B2 Method and apparatus for reducing noise pumping due to noise suppression and echo control interaction 有权
标题翻译：用于减少由噪声抑制和回波控制相互作用引起的噪声抽吸的方法和装置
公开(公告)号：US08983085B2
公开(公告)日：2015-03-17
申请号：US13345351
申请日：2012-01-06
申请人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
发明人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
IPC分类号： H04B3/20 , G10L21/0208 , H04M9/08 , G10L25/18
CPC分类号： G10L21/0208 , G10L25/18 , G10L2021/02082 , H04M9/082
摘要： An input signal is processed through noise suppression (NS) and echo control (EC) via a multipath model that reduces noise pumping effects while maintaining EC performance. A copy of a “noisy” input signal is sent to an EC component before the noisy signal is sent to a NS component, which processes the signal first, when there is a consistent noise level for estimation. The copy of the pre-processing noisy signal is sent to the EC component along with a “clean” or “noise-suppressed” signal output from the NS component. The EC component analyzes the noisy signal as if the EC was the first component in the signal chain to determine what actions to take. The EC component then applies these actions to the clean signal received from the NS component.
摘要翻译：通过噪声抑制（NS）和回波控制（EC）通过多径模型处理输入信号，可以在保持EC性能的同时降低噪声泵浦效应。在噪声信号被发送到NS分量之前，“噪声”输入信号的副本被发送到EC分量，该NS分量首先处理信号，当存在用于估计的一致的噪声电平时。预处理噪声信号的副本与从NS分量输出的“干净”或“噪声抑制”信号一起发送到EC分量。 EC组件分析噪声信号，就好像EC是信号链中的第一个组件，以确定采取什么行动。 EC组件然后将这些动作应用于从NS组件接收的干净信号。

4. 发明授权

US08233632B1 Method and apparatus for multi-channel audio processing using single-channel components 有权
公开(公告)号：US08233632B1
公开(公告)日：2012-07-31
申请号：US13244816
申请日：2011-09-26
申请人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
发明人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
IPC分类号： H03B29/00 , H04M9/08 , H04B3/20
CPC分类号： H04M9/08 , G10L19/008 , G10L2021/02082
摘要： Processing multi-channel audio streams using one or more arrangements of single-channel components. Components that only process the near-end, or capture stream, such as noise suppression (NS) components, are limited in how they can be suitably arranged for processing multi-channel streams. However, components that process the near-end stream using one or more inputs from the far-end, or render stream, such as acoustic echo cancellation (AEC) and automatic gain control (AGC) components, are arranged in one or more of the ways suitable for use with multiple channels.

5. 发明申请

US20120294453A1 METHOD AND APPARATUS FOR REDUCING NOISE PUMPING DUE TO NOISE SUPPRESSION AND ECHO CONTROL INTERACTION 有权
公开(公告)号：US20120294453A1
公开(公告)日：2012-11-22
申请号：US13345351
申请日：2012-01-06
申请人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
发明人： Andrew John MacDonald , Jan Skoglund , Björn Volcker
IPC分类号： H04B3/20
CPC分类号： G10L21/0208 , G10L25/18 , G10L2021/02082 , H04M9/082
摘要： An input signal is processed through noise suppression (NS) and echo control (EC) via a multipath model that reduces noise pumping effects while maintaining EC performance. A copy of a “noisy” input signal is sent to an EC component before the noisy signal is sent to a NS component, which processes the signal first, when there is a consistent noise level for estimation. The copy of the pre-processing noisy signal is sent to the EC component along with a “clean” or “noise-suppressed” signal output from the NS component. The EC component analyzes the noisy signal as if the EC was the first component in the signal chain to determine what actions to take. The EC component then applies these actions to the clean signal received from the NS component.

6. 发明授权

US08428277B1 Clipping protection in fixed-width audio mixing 有权
标题翻译：剪切保护在固定宽度音频混合
公开(公告)号：US08428277B1
公开(公告)日：2013-04-23
申请号：US13271139
申请日：2011-10-11
申请人： Jan Skoglund , Andrew John MacDonald
发明人： Jan Skoglund , Andrew John MacDonald
IPC分类号： H03G3/00
CPC分类号： H03G11/00 , H03G7/002 , H03G7/007
摘要： A mixing system provides both clipping protection and signal level conservation while the system operates in the original width type. The mixing system includes a first input multiplier multiplying a first digital input signal by a first gain value to provide a first scaled signal, a second input multiplier multiplying a second digital input signal by the first gain value to provide a second scaled signal, a combiner combining the first scaled signal and the second scaled signal to provide a combined signal, a soft limiter soft limiting the combined signal by reducing some of the amplitudes of the combined signal to provide a soft limited signal, and an output multiplier multiplying the soft limited signal by a second gain value to provide a mixed output signal, wherein the first gain value is a value that is equal to an inverse value of the second gain value.
摘要翻译：当系统以原始宽度类型运行时，混合系统提供削波保护和信号电平保护。混合系统包括第一输入乘法器，将第一数字输入信号乘以第一增益值以提供第一缩放信号，第二输入乘法器将第二数字输入信号乘以第一增益值以提供第二缩放信号，组合器组合所述第一缩放信号和所述第二缩放信号以提供组合信号;软限幅器，通过减小所述组合信号的一些幅度以提供软限制信号来限制所述组合信号，以及输出乘法器将所述软限制信号通过第二增益值提供混合输出信号，其中第一增益值是等于第二增益值的反相值的值。

7. 发明授权

US09118296B2 Clipping protection in fixed-width audio mixing 有权
标题翻译：剪切保护在固定宽度音频混合
公开(公告)号：US09118296B2
公开(公告)日：2015-08-25
申请号：US13754555
申请日：2013-01-30
申请人： Jan Skoglund , Andrew John MacDonald
发明人： Jan Skoglund , Andrew John MacDonald
IPC分类号： H03G5/00 , H03G11/00
CPC分类号： H03G11/00 , H03G7/002 , H03G7/007
摘要： An apparatus provides both clipping protection and signal level conservation while the system operates in the original width type. The apparatus includes a first shifting unit right shifting a first digital input signal to provide a first shifted signal; a second shifting unit right shifting a second digital input signal to provide a second shifted signal; a combiner combining the first shifted signal and the second shifted signal to provide a combined signal; a soft limiter soft limiting the combined signal by reducing some of the amplitudes of the combined signal to provide a soft limited signal; and a third shifting unit left shifting the soft limited signal to provide an output signal.
摘要翻译：一种装置在系统以原始宽度类型运行时提供削波保护和信号电平保护。该装置包括第一移位单元，右移第一数字输入信号以提供第一移位信号; 第二移位单元右移第二数字输入信号以提供第二移位信号; 组合器，其组合第一移位信号和第二移位信号以提供组合信号; 软限幅器软通过减少组合信号的一些幅度来限制组合信号以提供软限制信号; 并且第三移位单元向左移动软限制信号以提供输出信号。

8. 发明授权

US08831249B1 Clipping protection in fixed-width audio mixing 有权
标题翻译：剪切保护在固定宽度音频混合
公开(公告)号：US08831249B1
公开(公告)日：2014-09-09
申请号：US13271123
申请日：2011-10-11
申请人： Jan Skoglund , Andrew John MacDonald
发明人： Jan Skoglund , Andrew John MacDonald
IPC分类号： H04B1/00 , H03G3/00
CPC分类号： H03G7/007
摘要： A mixing system provides both clipping protection and signal level conservation while the system operates in the original width type. The mixing system includes a first input multiplier multiplying a first digital input signal by a first gain value to provide a first scaled signal, a second input multiplier multiplying a second digital input signal by the first gain value to provide a second scaled signal, a combiner combining the first scaled signal and the second scaled signal to provide a combined signal, a soft limiter soft limiting the combined signal by reducing some of the amplitudes of the combined signal to provide a soft limited signal, and an output multiplier multiplying the soft limited signal by a second gain value to provide a mixed output signal, wherein the first gain value is a value that is equal to an inverse value of the second gain value.
摘要翻译：当系统以原始宽度类型运行时，混合系统提供削波保护和信号电平保护。混合系统包括第一输入乘法器，将第一数字输入信号乘以第一增益值以提供第一缩放信号，第二输入乘法器将第二数字输入信号乘以第一增益值以提供第二缩放信号，组合器组合所述第一缩放信号和所述第二缩放信号以提供组合信号;软限幅器，通过减小所述组合信号的一些幅度以提供软限制信号来限制所述组合信号，以及输出乘法器将所述软限制信号通过第二增益值提供混合输出信号，其中第一增益值是等于第二增益值的反相值的值。

9. 发明授权

US08749612B1 Reduced bandwidth usage in video conferencing 有权
标题翻译：减少视频会议中的带宽使用
公开(公告)号：US08749612B1
公开(公告)日：2014-06-10
申请号：US13309141
申请日：2011-12-01
申请人： Lars Henrik Ellner , Andrew John MacDonald
发明人： Lars Henrik Ellner , Andrew John MacDonald
IPC分类号： H04N7/15
CPC分类号： H04N7/15 , H04L65/403 , H04L65/605
摘要： Video conferencing with reduced bandwidth usage is disclosed. One method comprises receiving an audio stream at a server station connected to a plurality of participants in the video conference, at least one participant being a client station connected to the server station by a network and supplying the audio stream, the server station including a first memory and processor, and the client station including a second memory and processor. A mixing algorithm is performed that determines which video streams of the participants to mix to form a conference video stream for display by at least one of the participants. A video stream from the client station is selectively transmitted to the server station responsive to the mixing algorithm, and the server station transmits the conference video stream and/or the streams to be mixed to the participant(s).
摘要翻译：公开了减少带宽使用的视频会议。一种方法包括在连接到视频会议中的多个参与者的服务器站处接收音频流，至少一个参与者是通过网络连接到服务器站并提供音频流的客户站，服务器站包括第一存储器和处理器，以及包括第二存储器和处理器的客户端站。执行混合算法，其确定要混合的参与者的哪些视频流以形成会议视频流以供至少一个参与者显示。响应于混合算法，来自客户站的视频流被选择性地发送到服务器站，并且服务器站将会议视频流和/或要混合的流发送给参与者。

10. 发明申请

US20110118938A1 VEHICLE CONTROL SYSTEM 审中-公开
标题翻译：车辆控制系统
公开(公告)号：US20110118938A1
公开(公告)日：2011-05-19
申请号：US12947620
申请日：2010-11-16
申请人： Andrew John MacDonald , David Robert Reeve , Campbell Robert Morrison
发明人： Andrew John MacDonald , David Robert Reeve , Campbell Robert Morrison
IPC分类号： G05D1/10 , G05D1/00
CPC分类号： G01C21/16 , A01B69/008 , A01B79/005 , G01S5/0252 , G01S17/023 , G01S19/03 , G05D1/0223 , G05D1/024 , G05D1/0255 , G05D1/0259 , G05D1/027 , G05D1/0278 , G05D2201/0201
摘要： A vehicle control system having a controller and a spatial database adapted to provide spatial data to the controller at control speed. The spatial data provided from the spatial database to the controller can be any kind of data or information that has some relationship or association with “real world” geographical location, or if it is stored somehow with reference to geographical location. The spatial data received by the controller from the database forms at least part of the control inputs that the controller operates on to control the vehicle. The fact that the controller operates directly on information that is inherently associated with “real world” geographic location represents a change in thinking compared with existing vehicle control systems. In particular, it means that the control system of the present invention “thinks” directly in terms of spatial location. A vehicle control system in accordance with one particular embodiment of the invention comprises a task path generator, a spatial database, at least one external spatial data receiver, a vehicle attitude compensation module, a position error generator, a controller, and actuators to control the vehicle.
摘要翻译：一种具有控制器和空间数据库的车辆控制系统，其适于以控制速度向控制器提供空间数据。从空间数据库提供给控制器的空间数据可以是与“真实世界”地理位置有某种关系或关联的任何种类的数据或信息，或者如果以某种方式参考地理位置存储的话。控制器从数据库接收的空间数据形成控制器操作以控制车辆的控制输入的至少一部分。控制器直接对与“现实世界”地理位置相关联的信息进行操作的事实代表了与现有车辆控制系统相比的思维变化。特别地，这意味着本发明的控制系统就空间位置直接“思考”。根据本发明的一个具体实施例的车辆控制系统包括任务路径生成器，空间数据库，至少一个外部空间数据接收器，车辆姿态补偿模块，位置误差发生器，控制器和用于控制车辆。

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