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1. 发明授权

US09210504B2 Processing audio signals 有权
标题翻译：处理音频信号
公开(公告)号：US09210504B2
公开(公告)日：2015-12-08
申请号：US13341607
申请日：2011-12-30
申请人： Karsten Vandborg Sorensen
发明人： Karsten Vandborg Sorensen
IPC分类号： H04R3/00 , H04B3/20 , H04M9/08 , H04R3/02 , H04M3/00
CPC分类号： H04R3/005 , H04M3/002 , H04M9/082 , H04R3/02 , H04R2430/20
摘要： In an embodiment, a method of processing audio signals at a device includes receiving audio signals at a plurality of microphones of the device; processing at least one of the audio signals received by the plurality of microphones to generate a first characteristic; a beamformer applying beamformer coefficients to the received audio signals, thereby generating a beamformer output; processing the beamformer output to generate a second characteristic. An echo canceller is applied to the beamformer output, thereby suppressing, from the beamformer output, an echo resulting from audio signals output from an audio output. An operating parameter of the echo canceller is determined, using a relationship between the first and second characteristics.
摘要翻译：在一个实施例中，在设备处处理音频信号的方法包括在设备的多个麦克风处接收音频信号; 处理由所述多个麦克风接收的所述音频信号中的至少一个以产生第一特征; 波束形成器将波束形成器系数应用于所接收的音频信号，由此产生波束形成器输出; 处理波束形成器输出以产生第二特性。将回波消除器应用于波束形成器输出，从而从波束形成器输出抑制从音频输出输出的音频信号产生的回波。使用第一和第二特性之间的关系来确定回波消除器的操作参数。

2. 发明授权

US08891785B2 Processing signals 有权
标题翻译：处理信号
公开(公告)号：US08891785B2
公开(公告)日：2014-11-18
申请号：US13308106
申请日：2011-11-30
申请人： Karsten Vandborg Sorensen
发明人： Karsten Vandborg Sorensen
IPC分类号： H04R3/00 , G10L21/0208 , G01S3/14 , G01S3/805 , G01S3/86 , G10L21/0216 , H04R1/40
CPC分类号： G10L21/0208 , G01S3/14 , G01S3/805 , G01S3/86 , G10L2021/02166 , H04R1/406 , H04R3/005 , H04R2499/11
摘要： Signals are received, over a range of angles, at an input of a device. The signals include a primary signal with a principal direction of arrival and an interfering signal with a respective interfering direction of arrival at the input. Measurements are determined for the received signals over the range of angles. Each measurement relates to a particular angle and indicating the energy of the received signals which are received from the particular angle. For each angle over the range of angles, a value is removed from the measurement for that angle, the value being based on the minimum of: (i) the energy of the measurement for that angle, and (ii) the energy of a corresponding measurement for a corresponding angle mirrored around the principal direction of arrival, whereby the remaining values of the plurality of measurements are indicative of said at least one interfering direction of arrival.
摘要翻译：在设备的输入端处，在角度范围内接收信号。信号包括具有主要到达方向的主信号和具有到达输入的相应干扰方向的干扰信号。对角度范围内的接收信号进行测量。每个测量涉及特定角度并且指示从特定角度接收的接收信号的能量。对于角度范围内的每个角度，从该角度的测量中去除一个值，该值基于以下的最小值：（i）该角度的测量能量，以及（ii）相应的测量对于在主要到达方向周围镜像的相应角度，由此多个测量的剩余值指示所述至少一个干扰到达方向。

3. 发明授权

US08775171B2 Noise suppression 有权
标题翻译：噪声抑制
公开(公告)号：US08775171B2
公开(公告)日：2014-07-08
申请号：US12803295
申请日：2010-06-23
申请人： Karsten Vandborg Sorensen , Jon Bergenheim , Koen Vos
发明人： Karsten Vandborg Sorensen , Jon Bergenheim , Koen Vos
IPC分类号： G10L21/02
CPC分类号： G10L19/012 , G10L21/0208
摘要： A method and computing system for suppressing noise in an audio signal, comprising: receiving the audio signal at signal processing means; determining that another signal is input to the signal processing means, the input signal resulting from an activity which generates noise in the audio signal; and selectively suppressing noise in the audio signal in dependence on the determination that the input signal is input to the signal processing means to thereby suppress the generated noise in the audio signal.
摘要翻译：一种用于抑制音频信号中的噪声的方法和计算系统，包括：在信号处理装置处接收音频信号; 确定另一信号被输入到所述信号处理装置，所述输入信号是由在音频信号中产生噪声的活动产生的; 并且根据输入信号被输入到信号处理装置的确定来选择性地抑制音频信号中的噪声，从而抑制音频信号中产生的噪声。

4. 发明申请

US20120163612A1 Communication System 有权
标题翻译：通讯系统
公开(公告)号：US20120163612A1
公开(公告)日：2012-06-28
申请号：US13336547
申请日：2011-12-23
申请人： Karsten Vandborg Sorensen , Jon Bergenheim , Koen Vos
发明人： Karsten Vandborg Sorensen , Jon Bergenheim , Koen Vos
IPC分类号： H04B3/20
CPC分类号： H04M9/085
摘要： An echo component of a first signal received at an audio input device is removed. A second signal is output from an audio output device. The echo component in the first signal is the result of the second signal traversing an echo path. The characteristics of the first and second signals are compared, and if the first signal only comprises the echo, an estimate of the echo path is determined by comparing the first and second signals. The echo path estimate is applied to the first signal to determine an equalised first signal, which is is compared with the second signal to determine an estimate of the echo component. The echo component from the first signal is removed in dependence on the estimate of the echo component.
摘要翻译：去除在音频输入装置处接收的第一信号的回波分量。从音频输出装置输出第二信号。第一个信号中的回波分量是第二个信号穿过回波路径的结果。比较第一和第二信号的特性，并且如果第一信号仅包括回波，则通过比较第一和第二信号来确定回波路径的估计。将回波路径估计应用于第一信号以确定均衡的第一信号，其与第二信号进行比较以确定回波分量的估计。来自第一信号的回波分量根据回波分量的估计被去除。

5. 发明授权

US09042574B2 Processing audio signals 有权
标题翻译：处理音频信号
公开(公告)号：US09042574B2
公开(公告)日：2015-05-26
申请号：US13308210
申请日：2011-11-30
申请人： Karsten Vandborg Sorensen
发明人： Karsten Vandborg Sorensen
IPC分类号： H04R3/00 , G10L21/02 , H04M9/08 , G10L21/0216 , G10L21/0208
CPC分类号： G10L21/02 , G10L2021/02082 , G10L2021/02166 , H04M9/082
摘要： Audio signals are processed for use in a communication event. A data store may be queried to obtain an indication of an echo direction, which relates to a direction from which audio signals output from the audio output are likely to be received at a microphone array (plurality of microphones) of a device. Beamformer coefficients of an adaptive beamformer of the device are determined in dependence upon the received indication of the echo direction. Audio signals are received at the microphone array. The adaptive beamformer applies the determined beamformer coefficients to the received audio signals, thereby generating a beamformer output for use in the communication event. The beamformer coefficients are determined such that echo suppression is applied to audio signals received at the microphone array from the indicated echo direction.
摘要翻译：音频信号被处理用于通信事件。可以查询数据存储以获得回波方向的指示，其涉及从设备的麦克风阵列（多个麦克风）可能从音频输出输出的音频信号可能被接收的方向。根据接收到的回波方向的指示来确定设备的自适应波束形成器的波束形成系数。在麦克风阵列处接收音频信号。自适应波束形成器将确定的波束形成器系数应用于所接收的音频信号，从而生成用于通信事件的波束形成器输出。确定波束形成系数，使得回波抑制被应用于从指示的回波方向在麦克风阵列接收的音频信号。

6. 发明授权

US08718562B2 Processing audio signals 有权
标题翻译：处理音频信号
公开(公告)号：US08718562B2
公开(公告)日：2014-05-06
申请号：US13112529
申请日：2011-05-20
申请人： Karsten Vandborg Sorensen , Jon Bergenheim
发明人： Karsten Vandborg Sorensen , Jon Bergenheim
IPC分类号： H04B1/00
CPC分类号： H03G3/3089 , H04M1/6008 , H04M1/6016
摘要： A method of processing an audio signal transmitted from a remote transmitter and received at a local receiver of an acoustic system, includes at the receiver receiving with the audio signal an indication of remote transmitter gain, determining an overall system gain of the acoustic system from the remote transmitter gain and a local receiver gain and selectively applying a system gain reduction step to the audio signal if it is determined that the overall system gain exceeds a threshold.
摘要翻译：一种处理从远程发射机发送并在声学系统的本地接收机处接收的音频信号的方法包括在接收机处接收与该音频信号的远程发射机增益的指示，从该系统的整体系统增益确定远程发射机增益和本地接收机增益，并且如果确定整个系统增益超过阈值，则选择性地将系统增益降低步骤应用于音频信号。

7. 发明授权

US08571039B2 Encoding and decoding speech signals 有权
标题翻译：编码和解码语音信号
公开(公告)号：US08571039B2
公开(公告)日：2013-10-29
申请号：US12803271
申请日：2010-06-23
申请人： Stefan Strommer , Karsten Vandborg Sorensen , Soren Skak Jensen , Koen Vos , Jon Bergenheim
发明人： Stefan Strommer , Karsten Vandborg Sorensen , Soren Skak Jensen , Koen Vos , Jon Bergenheim
IPC分类号： H04L12/56
CPC分类号： G10L19/26 , G10L19/24 , G10L21/0364
摘要： A method and apparatus for transmitting an audio signal over a communication channel comprising encoding the audio signal with an encoder 204 using a first sampling rate, filtering the audio signal using a first cut off frequency, the first cut off frequency being chosen in dependence upon the first sampling rate, and transmitting the encoded and filtered audio signal over the communication channel. The presence of a condition in which the sampling rate of the encoder 204 is to be switched to a second sampling rate at a switching time is determined and if the condition has been determined to be present, the cut off frequency used in the filtering step is gradually changed from the first cut off frequency to a second cut off frequency, the second cut off frequency being chosen in dependence upon the second sampling rate, such that the audio bandwidth of the transmitted signal changes gradually when the sampling rate is switched to the second sampling rate.
摘要翻译：一种用于通过通信信道发送音频信号的方法和装置，包括使用第一采样率对编码器204对音频信号进行编码，使用第一截止频率对音频信号进行滤波，第一截止频率根据第一采样率，并且通过通信信道发送编码和滤波的音频信号。确定在切换时刻将编码器204的采样率切换到第二采样率的条件的存在，如果已经确定存在条件，则在滤波步骤中使用的截止频率为从第一截止频率逐渐变化到第二截止频率，根据第二采样率选择第二截止频率，使得当采样速率切换到第二截止频率时，发送信号的音频带宽逐渐变化采样率。

8. 发明授权

US08358600B2 Method of transmitting data in a communication system 有权
标题翻译：在通信系统中传输数据的方法
公开(公告)号：US08358600B2
公开(公告)日：2013-01-22
申请号：US12004494
申请日：2007-12-20
申请人： Michael Bevin , Karsten Vandborg Sorensen , Antonio Varanda , Tiago Loureiro
发明人： Michael Bevin , Karsten Vandborg Sorensen , Antonio Varanda , Tiago Loureiro
IPC分类号： H04L12/16 , H04Q11/00
CPC分类号： H04M3/56 , G10L25/78 , H04M3/2236 , H04M3/565 , H04M3/569 , H04M7/006
摘要： A method of transmitting a combined audio signal to at least one of a plurality of participants in a communication event comprising; receiving an audio signal from each of said plurality of participants together with audio activity information associated with each of said received audio signals; analysing a measure of audio activity for each received audio signal based on the audio activity information associated with each of said received signals, wherein said measure of audio activity allows audio signals comprising audio activity to be compared; selecting a set of audio signals from said received audio signals based on the analysed measure of audio activity for each signal; decoding said set of audio signals; and combining said set of audio signals to generate said combined audio signal to be transmitted to said at least one of said plurality of participants.
摘要翻译：一种将组合音频信号发送到通信事件中的多个参与者中的至少一个的方法，包括：从所述多个参与者中的每一个接收音频信号以及与每个所述接收到的音频信号相关联的音频活动信息; 基于与每个所述接收信号相关联的音频活动信息来分析每个接收到的音频信号的音频活动的度量，其中所述音频活动量度允许比较包括音频活动的音频信号; 基于所分析的每个信号的音频活动度量，从所述接收到的音频信号中选择一组音频信号; 解码所述一组音频信号; 以及组合所述一组音频信号以产生要发送到所述多个参与者的所述至少一个参与者的所述组合音频信号。

9. 发明申请

US20120207327A1 Processing Audio Signals 有权
标题翻译：处理音频信号
公开(公告)号：US20120207327A1
公开(公告)日：2012-08-16
申请号：US13327330
申请日：2011-12-15
申请人： Karsten Vandborg Sorensen , Jesus de Vicente Peña
发明人： Karsten Vandborg Sorensen , Jesus de Vicente Peña
IPC分类号： H04B15/00
CPC分类号： G10L21/0208
摘要： According to an embodiment, a method of reducing noise in a signal received at a processing stage of an acoustic system includes, at the processing stage identifying at least one frequency which causes a system gain of the acoustic system to be above an average system gain of the acoustic system; providing a noise attenuation factor for reducing noise in the signal for the at least one frequency, the noise attenuation factor for the at least one frequency based on the system gain for that frequency; and applying the noise attenuation factor to a component of the signal at that frequency.
摘要翻译：根据实施例，一种降低在声学系统的处理阶段接收的信号中的噪声的方法包括：在处理阶段，识别至少一个使声学系统的系统增益高于系统增益的频率声学系统; 提供用于减少所述至少一个频率的所述信号中的噪声的噪声衰减因子，所述噪声衰减因子是基于所述频率的系统增益的所述至少一个频率的噪声衰减因子; 以及将噪声衰减因子应用于该频率处的信号分量。

10. 发明申请

US20110112668A1 Gain control for an audio signal 有权
标题翻译：为音频信号增益控制
公开(公告)号：US20110112668A1
公开(公告)日：2011-05-12
申请号：US12803291
申请日：2010-06-23
申请人： Karsten Vandborg Sorensen , Jon Bergenheim , Koen Vos
发明人： Karsten Vandborg Sorensen , Jon Bergenheim , Koen Vos
IPC分类号： G06F17/00
CPC分类号： H03G3/32 , G10L21/0208
摘要： A method and system for modifying an audio signal, the method comprising: receiving the audio signal at signal processing means; analysing the received audio signal to identify characteristic signal components in the audio signal;determining that another signal is input to the signal processing means, the input signal resulting from an activity which generates noise in the audio signal; and selectively applying an adjusted gain to the audio signal based on the determination that the input signal is input to the signal processing means, wherein the adjusted gain is generated in dependence upon the signal strength of the identified signal components.
摘要翻译：一种用于修改音频信号的方法和系统，所述方法包括：在信号处理装置处接收音频信号; 分析所接收的音频信号以识别音频信号中的特征信号分量; 确定另一信号被输入到所述信号处理装置，所述输入信号是由在音频信号中产生噪声的活动产生的; 以及基于所述输入信号被输入到所述信号处理装置的确定来选择性地对所述音频信号施加调整的增益，其中根据所识别的信号分量的信号强度产生所述调整后的增益。

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