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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. 发明申请

US20120014514A1 METHOD OF INDICATING PRESENCE OF TRANSIENT NOISE IN A CALL AND APPARATUS THEREOF 有权
标题翻译：表示暂时停留在呼叫中的方法及其设备
公开(公告)号：US20120014514A1
公开(公告)日：2012-01-19
申请号：US13179239
申请日：2011-07-08
申请人： Niklas Enbom , Roar Hagen , Jan Skoglund
发明人： Niklas Enbom , Roar Hagen , Jan Skoglund
IPC分类号： G01R29/26 , H04M3/22
CPC分类号： H04M3/561 , H04M3/18 , H04M2201/12
摘要： A method and an apparatus for indicating presence of a transient noise in a call are provided. The method comprises the steps of determining activity at an endpoint of the call by monitoring presence of a signal input from the endpoint into the call and monitoring presence of a potential source of transient noise at the endpoint. Further, based on the activity determination and the monitoring of the presence of a potential source of transient noise, a signal representative of the presence of a transient noise in the call is sent. The present invention is advantageous in that it enables improvement of the quality of the call.
摘要翻译：提供一种用于指示呼叫中的瞬态噪声的存在的方法和装置。该方法包括以下步骤：通过监视从端点输入到呼叫中的信号的存在来确定呼叫的端点处的活动，并监视端点处潜在的瞬态噪声源的存在。此外，基于活动确定和对潜在的瞬时噪声源的存在的监视，发送表示呼叫中存在瞬态噪声的信号。本发明的优点在于能够提高呼叫的质量。

3. 发明授权

US07756350B2 Lossless encoding and decoding of digital data 有权
标题翻译：数字数据的无损编码和解码
公开(公告)号：US07756350B2
公开(公告)日：2010-07-13
申请号：US11595995
申请日：2006-11-13
申请人： Koen Vos , Jan Skoglund
发明人： Koen Vos , Jan Skoglund
IPC分类号： G06K9/36 , H04N7/12 , G06K9/46
CPC分类号： G10L19/0017 , G10L19/0212 , G10L19/035 , H03M7/4006 , H04N19/13 , H04N19/60 , H04N19/91
摘要： The disclosure relates to encoding and decoding of digital data, and in particular to lossless arithmetic encoding and decoding of digital data representing audio, image or video data. A probability density function used for lossless arithmetic encoding of digital data is controlled by employing one or more parameters that changes over the set of data to be encoded. A parametric model in the form of an envelope function describes the spread of quantization indices derived from the data in a transform domain. By transmitting the one or more parameters together with the arithmetically encoded data, a receiving decoder may decode the data by exploiting the same parametric model as used by the encoder.
摘要翻译：本公开涉及数字数据的编码和解码，特别是涉及表示音频，图像或视频数据的数字数据的无损算术编码和解码。用于数字数据的无损算术编码的概率密度函数通过采用改变要编码的数据集的一个或多个参数来控制。以包络函数形式的参数模型描述了从变换域中的数据导出的量化索引的扩展。通过将一个或多个参数与算术编码数据一起发送，接收解码器可以通过利用由编码器使用的相同参数模型对数据进行解码。

4. 发明授权

US09336791B2 Rearrangement and rate allocation for compressing multichannel audio 有权
标题翻译：用于压缩多声道音频的重排和速率分配
公开(公告)号：US09336791B2
公开(公告)日：2016-05-10
申请号：US13749399
申请日：2013-01-24
申请人： Minyue Li , Jan Skoglund , Willem Bastiaan Kleijn
发明人： Minyue Li , Jan Skoglund , Willem Bastiaan Kleijn
IPC分类号： G10L21/00 , G10L19/008
CPC分类号： G10L21/00 , G10L19/008
摘要： Provided are methods and systems for rearranging a multichannel audio signal into sub-signals and allocating bit rates among them, such that compressing the sub-signals with a set of audio codecs at the allocated bit rates yields an optimal fidelity with respect to the original multichannel audio signal. Rearranging the multichannel audio signal into sub-signals and assigning each sub-signal a bit rate may be optimized according to a criterion. Existing audio codecs may be used to quantize the sub-signals at the assigned bit rates and the compressed sub-signals may be combined into the original format according to the manner in which the original multichannel audio signal is rearranged.
摘要翻译：提供了用于将多声道音频信号重新排列为子信号并在其间分配比特率的方法和系统，使得以所分配的比特率的一组音频编解码器压缩子信号产生相对于原始多声道的最佳保真度音频信号。可以根据标准来将多声道音频信号重新排列成子信号并且分配每个子信号的比特率。可以使用现有的音频编解码器来以分配的比特率对子信号进行量化，并且压缩的子信号可以根据重新排列原始多声道音频信号的方式被组合成原始格式。

5. 发明申请

US20140226829A1 AUDIO CLIPPING DETECTION 有权
标题翻译：音频剪辑检测
公开(公告)号：US20140226829A1
公开(公告)日：2014-08-14
申请号：US13767387
申请日：2013-02-14
申请人： Jan SKOGLUND , Jan Thomas LINDEN
发明人： Jan SKOGLUND , Jan Thomas LINDEN
IPC分类号： H04R29/00
CPC分类号： H04R29/00 , G10L25/69
摘要： Methods and systems for detecting the presence and frequency of clipping in an audio signal are provided. A clipping detection algorithm detects the presence of hard and soft clipping using histograms with intervals of samples, rather than attempting to identify the clipping value. Therefore, it is not essential to the algorithm that there be a large number of bins. Furthermore, the bins may be non-uniformly distributed since the number of samples belonging to lower amplitudes is of little importance. The detection algorithm is also configured to determine the severity and/or perceptual effect of any clipping found to be present in the signal by calculating the ratio of clipped samples to non-clipped samples. Temporal information on the occurrence of clipping in the signal is also used to evaluate perceptual effect.
摘要翻译：提供了用于检测音频信号中的限幅的存在和频率的方法和系统。剪辑检测算法使用具有样本间隔的直方图来检测是否存在硬和软剪辑，而不是尝试识别剪切值。因此，算法不是必须存在大量的分组。此外，由于属于较低振幅的样本数量几乎不重要，因此可能不均匀分布。检测算法还被配置为通过计算剪切样本与非剪切样本的比率来确定发现存在于信号中的任何限幅的严重性和/或感知效果。关于信号中剪辑发生的时间信息也用于评估感知效果。

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

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。

8. 发明申请

US20120296657A1 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通道音频处理的方法和设备
公开(公告)号：US20120296657A1
公开(公告)日：2012-11-22
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： G10L21/00
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。

9. 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。

10. 发明申请

US20120294452A1 METHOD AND APPARATUS FOR REDUCING NOISE PUMPING DUE TO NOISE SUPPRESSION AND ECHO CONTROL INTERACTION 有权
标题翻译：用于减少噪声抑制和噪声控制相互作用的方法和装置
公开(公告)号：US20120294452A1
公开(公告)日：2012-11-22
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的信号一起发送到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。

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