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1.发明授权Method for determining a noise reference signal for noise compensation and/or noise reduction 有权用于确定用于噪声补偿和/或降噪的噪声参考信号的方法公开(公告)号：US08374358B2
公开(公告)日：2013-02-12
申请号：US12749066
申请日：2010-03-29
申请人： Markus Buck , Tobias Wolff , Toby Christian Lawin-Ore , Samuel Ngouoko Mboungueng , Gerhard Schmidt
发明人： Markus Buck , Tobias Wolff , Toby Christian Lawin-Ore , Samuel Ngouoko Mboungueng , Gerhard Schmidt
CPC分类号： G10K11/002 , G10L21/0208 , G10L2021/02165 , G10L2021/02166 , H04R3/005 , H04R2499/13
摘要： The invention provides a method for determining a noise reference signal for noise compensation and/or noise reduction. A first audio signal on a first signal path and a second audio signal on a second signal path are received. The first audio signal is filtered using a first adaptive filter to obtain a first filtered audio signal. The second audio signal is filtered using a second adaptive filter to obtain a second filtered audio signal. The first and the second filtered audio signal are combined to obtain the noise reference signal. The first and the second adaptive filter are adapted such as to minimize a wanted signal component in the noise reference signal.
摘要翻译： 本发明提供了一种用于确定用于噪声补偿和/或降噪的噪声参考信号的方法。 接收第一信号路径上的第一音频信号和第二信号路径上的第二音频信号。 使用第一自适应滤波器对第一音频信号进行滤波，以获得第一滤波音频信号。 使用第二自适应滤波器对第二音频信号进行滤波，以获得第二滤波音频信号。 第一和第二滤波音频信号被组合以获得噪声参考信号。 第一和第二自适应滤波器适于使噪声参考信号中的有用信号分量最小化。
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2.发明申请Method for Determining a Noise Reference Signal for Noise Compensation and/or Noise Reduction 有权确定用于噪声补偿和/或降噪的噪声参考信号的方法公开(公告)号：US20100246851A1
公开(公告)日：2010-09-30
申请号：US12749066
申请日：2010-03-29
申请人： Markus Buck , Tobias Wolff , Toby Christian Lawin-Ore , Samuel Ngouoko Mboungueng , Gerhard Schmidt
发明人： Markus Buck , Tobias Wolff , Toby Christian Lawin-Ore , Samuel Ngouoko Mboungueng , Gerhard Schmidt
IPC分类号： H04B15/00
CPC分类号： G10K11/002 , G10L21/0208 , G10L2021/02165 , G10L2021/02166 , H04R3/005 , H04R2499/13
摘要： The invention provides a method for determining a noise reference signal for noise compensation and/or noise reduction. A first audio signal on a first signal path and a second audio signal on a second signal path are received. The first audio signal is filtered using a first adaptive filter to obtain a first filtered audio signal. The second audio signal is filtered using a second adaptive filter to obtain a second filtered audio signal. The first and the second filtered audio signal are combined to obtain the noise reference signal. The first and the second adaptive filter are adapted such as to minimize a wanted signal component in the noise reference signal.
摘要翻译： 本发明提供了一种用于确定用于噪声补偿和/或降噪的噪声参考信号的方法。 接收第一信号路径上的第一音频信号和第二信号路径上的第二音频信号。 使用第一自适应滤波器对第一音频信号进行滤波，以获得第一滤波音频信号。 使用第二自适应滤波器对第二音频信号进行滤波，以获得第二滤波音频信号。 第一和第二滤波音频信号被组合以获得噪声参考信号。 第一和第二自适应滤波器适于使噪声参考信号中的有用信号分量最小化。
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3.发明授权Method for determining a set of filter coefficients for an acoustic echo compensator 有权用于确定声学回声补偿器的滤波器系数集合的方法公开(公告)号：US08787560B2
公开(公告)日：2014-07-22
申请号：US12708172
申请日：2010-02-18
申请人： Markus Buck , Gerhard Schmidt , Tobias Wolff
发明人： Markus Buck , Gerhard Schmidt , Tobias Wolff
CPC分类号： H04R3/002 , G10L2021/02082 , H04M9/082 , H04R1/406 , H04R3/005 , H04R2430/20
摘要： The invention provides a method for determining a set of filter coefficients for an acoustic echo compensator in a beamformer arrangement. The acoustic echo compensator compensates for echoes within the beamformed signal. A plurality of sets of filter coefficients for the acoustic echo compensator is provided. Each set of filter coefficients corresponds to one of a predetermined number of steering directions of the beamformer arrangement. The predetermined number of steering directions is equal to or greater than the number of microphones in the microphone array. For a current steering direction, a current set of filter coefficients for the acoustic echo compensator is determined based on the provided sets of filter coefficients.
摘要翻译： 本发明提供一种用于确定波束形成器布置中的声学回波补偿器的滤波器系数集合的方法。 声回波补偿器补偿波束形成信号内的回波。 提供了用于声学回声补偿器的多组滤波器系数。 每组滤波器系数对应于波束形成器装置的预定数量的转向方向之一。 预定数量的转向方向等于或大于麦克风阵列中的麦克风的数量。 对于当前的转向方向，基于所提供的滤波器系数集合来确定用于声学回声补偿器的当前一组滤波器系数。
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公开(公告)号：US20110019835A1
公开(公告)日：2011-01-27
申请号：US12742907
申请日：2008-11-17
CPC分类号： H04R29/00 , G10L21/0272 , G10L2021/02166 , H04R3/005
摘要： The present invention relates to a method for localizing a sound source, in particular, a human speaker, comprising detecting sound generated by the sound source by means of a microphone array comprising more than two microphones and obtaining microphone signals, one for each of the microphones, selecting from the microphone signals a pair of microphone signals for a predetermined frequency range based on the distance of the microphones to each other and estimating the angle of the incidence of the sound on the microphone array based on the selected pair of microphone signals.
摘要翻译： 本发明涉及一种用于定位声源，特别是人类扬声器的方法，包括通过包括两个以上麦克风的麦克风阵列检测声源产生的声音并获得麦克风信号，每个麦克风 基于麦克风彼此的距离，基于所选择的一对麦克风信号估计麦克风阵列上的声音的入射角度，从麦克风选择一个麦克风信号达到预定频率范围。
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公开(公告)号：US08660274B2
公开(公告)日：2014-02-25
申请号：US12504333
申请日：2009-07-16
申请人： Tobias Wolff , Markus Buck , Gerhard Schmidt
发明人： Tobias Wolff , Markus Buck , Gerhard Schmidt
IPC分类号： H04R3/00
CPC分类号： H04R3/005 , H04R2430/20 , H04R2430/23
摘要： Embodiments of the present invention relate to methods, systems, and computer program products for signal processing. A first plurality of microphone signals is obtained by a first microphone array. A second plurality of microphone signals is obtained by a second microphone array different from the first microphone array. The first plurality of microphone signals is beamformed by a first beamformer comprising beamforming weights to obtain a first beamformed signal. The second plurality of microphone signals is beamformed by a second beamformer comprising the same beamforming weights as the first beamformer to obtain a second beamformed signal. The beamforming weights are adjusted such that the power density of echo components and/or noise components present in the first and second plurality of microphone signals is substantially reduced.
摘要翻译： 本发明的实施例涉及用于信号处理的方法，系统和计算机程序产品。 第一麦克风信号由第一麦克风阵列获得。 通过与第一麦克风阵列不同的第二麦克风阵列获得第二多个麦克风信号。 第一组多个麦克风信号由包括波束成形权重的第一波束形成器波束形成，以获得第一波束形成信号。 第二组麦克风信号由包括与第一波束形成器相同的波束形成权重的第二波束形成器波束形成，以获得第二波束形成信号。 调整波束成形权重使得第一和第二多个麦克风信号中存在的回波分量和/或噪声分量的功率密度显着降低。
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公开(公告)号：US08194500B2
公开(公告)日：2012-06-05
申请号：US12547681
申请日：2009-08-26
CPC分类号： G01S3/8083
摘要： A method of locating a sound source based on sound received at an array of microphones comprises the steps of determining a correlation function of signals provided by microphones of the array and establishing a direction in which the sound source is located based on at least one eigenvector of a matrix having matrix elements which are determined based on the correlation function. The correlation function has first and second frequency components associated with a first and second frequency band, respectively. The first frequency component is determined based on signals from microphones having a first distance, and the second frequency component is determined based on signals from microphones having a second distance different from the first distance.
摘要翻译： 基于在麦克风阵列处接收到的声音来定位声源的方法包括以下步骤：确定由阵列的麦克风提供的信号的相关函数，并基于至少一个本征向量建立声源所在的方向 具有基于相关函数确定的矩阵元素的矩阵。 相关函数分别具有与第一和第二频带相关联的第一和第二频率分量。 基于来自具有第一距离的麦克风的信号确定第一频率分量，并且基于来自具有不同于第一距离的第二距离的麦克风的信号来确定第二频率分量。
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公开(公告)号：US08238574B2
公开(公告)日：2012-08-07
申请号：US12636160
申请日：2009-12-11
申请人： Markus Buck , Tobias Wolff , Gerhard Schmidt , Tim Haulick
发明人： Markus Buck , Tobias Wolff , Gerhard Schmidt , Tim Haulick
IPC分类号： H04R3/00
CPC分类号： G01S3/807 , G10L21/02 , H04M9/082 , H04R1/406 , H04R3/005 , H04R3/02 , H04R2410/01 , H04R2430/23 , H04R2430/25 , H04R2499/13 , H04S1/00 , H04S3/00
摘要： The invention provides a computer-implemented method for determining a time delay for time delay compensation of a microphone signal from a microphone array in a beamformer arrangement. For a given time, an instantaneous estimate of a position of a wanted sound source and/or of a direction of arrival of a signal originating from the wanted sound source is determined. The computer system then determines whether the instantaneous estimate deviates from a preset estimate of a position of the wanted sound source and/or of a direction of arrival of a signal originating from the wanted sound source according to a predetermined criterion. The predetermined criterion comprises a check whether the instantaneous estimate deviates from the preset estimate by at least a predetermined deviation threshold. If the predetermined criterion is fulfilled, the instantaneous estimate for the given time is set by the computer system as the preset estimate, and the computer system determines the time delay for time delay compensation of the microphone signal based on the instantaneous estimate.
摘要翻译： 本发明提供了一种计算机实现的方法，用于确定来自波束形成器布置中的麦克风阵列的麦克风信号的时间延迟的时间延迟。 对于给定时间，确定所需声源的位置和/或源自所需声源的信号的到达方向的瞬时估计。 计算机系统然后根据预定标准确定瞬时估计是否偏离预期的所需声源的位置的预设估计和/或源自所需声源的信号的到达方向。 预定标准包括检查瞬时估计是否偏离预设估计至少预定的偏差阈值。 如果满足预定标准，则由计算机系统将给定时间的瞬时估计值设置为预设估计，并且计算机系统基于瞬时估计确定麦克风信号的时间延迟补偿的时间延迟。
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8.发明申请Method for Determining a Set of Filter Coefficients for an Acoustic Echo Compensator 有权用于确定声学回波补偿器的滤波器系数集的方法公开(公告)号：US20100215184A1
公开(公告)日：2010-08-26
申请号：US12708172
申请日：2010-02-18
申请人： Markus Buck , Gerhard Schmidt , Tobias Wolff
发明人： Markus Buck , Gerhard Schmidt , Tobias Wolff
IPC分类号： H04B3/20
CPC分类号： H04R3/002 , G10L2021/02082 , H04M9/082 , H04R1/406 , H04R3/005 , H04R2430/20
摘要： The invention provides a method for determining a set of filter coefficients for an acoustic echo compensator in a beamformer arrangement. The acoustic echo compensator compensates for echoes within the beamformed signal. A plurality of sets of filter coefficients for the acoustic echo compensator is provided. Each set of filter coefficients corresponds to one of a predetermined number of steering directions of the beamformer arrangement. The predetermined number of steering directions is equal to or greater than the number of microphones in the microphone array. For a current steering direction, a current set of filter coefficients for the acoustic echo compensator is determined based on the provided sets of filter coefficients.
摘要翻译： 本发明提供一种用于确定波束形成器布置中的声学回波补偿器的滤波器系数集合的方法。 声回波补偿器补偿波束形成信号内的回波。 提供了用于声学回声补偿器的多组滤波器系数。 每组滤波器系数对应于波束形成器装置的预定数量的转向方向之一。 预定数量的转向方向等于或大于麦克风阵列中的麦克风的数量。 对于当前的转向方向，基于所提供的滤波器系数集合来确定用于声学回声补偿器的当前一组滤波器系数。
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公开(公告)号：US08675890B2
公开(公告)日：2014-03-18
申请号：US12742907
申请日：2008-11-17
IPC分类号： H04R3/00
CPC分类号： H04R29/00 , G10L21/0272 , G10L2021/02166 , H04R3/005
摘要： The present invention relates to a method for localizing a sound source, in particular, a human speaker, comprising detecting sound generated by the sound source by means of a microphone array comprising more than two microphones and obtaining microphone signals, one for each of the microphones, selecting from the microphone signals a pair of microphone signals for a predetermined frequency range based on the distance of the microphones to each other and estimating the angle of the inci-dence of the sound on the microphone array based on the selected pair of micro-phone signals.
摘要翻译： 本发明涉及一种用于定位声源，特别是人类扬声器的方法，包括通过包括两个以上麦克风的麦克风阵列检测声源产生的声音并获得麦克风信号，每个麦克风 基于麦克风彼此的距离，从麦克风选择一个麦克风信号达到预定频率范围，并基于所选择的一对微型麦克风估计麦克风阵列上的声音的角度， 电话信号。
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公开(公告)号：US20100150364A1
公开(公告)日：2010-06-17
申请号：US12636160
申请日：2009-12-11
申请人： Markus Buck , Tobias Wolff , Gerhard Schmidt , Tim Haulick
发明人： Markus Buck , Tobias Wolff , Gerhard Schmidt , Tim Haulick
CPC分类号： G01S3/807 , G10L21/02 , H04M9/082 , H04R1/406 , H04R3/005 , H04R3/02 , H04R2410/01 , H04R2430/23 , H04R2430/25 , H04R2499/13 , H04S1/00 , H04S3/00
摘要： The invention provides a computer-implemented method for determining a time delay for time delay compensation of a microphone signal from a microphone array in a beamformer arrangement. For a given time, an instantaneous estimate of a position of a wanted sound source and/or of a direction of arrival of a signal originating from the wanted sound source is determined. The computer system then determines whether the instantaneous estimate deviates from a preset estimate of a position of the wanted sound source and/or of a direction of arrival of a signal originating from the wanted sound source according to a predetermined criterion. The predetermined criterion comprises a check whether the instantaneous estimate deviates from the preset estimate by at least a predetermined deviation threshold. If the predetermined criterion is fulfilled, the instantaneous estimate for the given time is set by the computer system as the preset estimate, and the computer system determines the time delay for time delay compensation of the microphone signal based on the instantaneous estimate.
摘要翻译： 本发明提供了一种计算机实现的方法，用于确定来自波束形成器布置中的麦克风阵列的麦克风信号的时间延迟的时间延迟。 对于给定时间，确定所需声源的位置和/或源自所需声源的信号的到达方向的瞬时估计。 计算机系统然后根据预定标准确定瞬时估计是否偏离预期的所需声源的位置的预设估计和/或源自所需声源的信号的到达方向。 预定标准包括检查瞬时估计是否偏离预设估计至少预定的偏差阈值。 如果满足预定标准，则由计算机系统将给定时间的瞬时估计值设置为预设估计，并且计算机系统基于瞬时估计确定麦克风信号的时间延迟补偿的时间延迟。
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