公开(公告)号：US20070150268A1

公开(公告)日：2007-06-28

申请号：US11316002

申请日：2005-12-22

申请人： Alejandro Acero ,  Ivan Tashev ,  Michael Seltzer

发明人： Alejandro Acero ,  Ivan Tashev ,  Michael Seltzer

IPC分类号： G10L21/02

CPC分类号： G10L21/0208 ,  G10L2021/02166

摘要： A microphone array having at least three microphones provides a captured signal. Spatial noise suppression estimates a desired signal from a captured signal using spatio-temporal distribution of the speech and the noise. In particular, spatial information indicative of at least two quantities of direction are used. A first quantity is based on a first combination of the signals from the at least three microphones, a second quantity is based on a second combination of the signals of the at least three microphones.

摘要翻译： 具有至少三个麦克风的麦克风阵列提供捕获的信号。 空间噪声抑制使用语音和噪声的时空分布从捕获的信号估计期望的信号。 特别地，使用指示至少两个方向量的空间信息。 第一数量是基于来自至少三个麦克风的信号的第一组合，第二数量是基于至少三个麦克风的信号的第二组合。

公开(公告)号：US20110274291A1

公开(公告)日：2011-11-10

申请号：US13187618

申请日：2011-07-21

申请人： Ivan Tashev ,  Alejandro Acero ,  Byung-Jun Yoon

发明人： Ivan Tashev ,  Alejandro Acero ,  Byung-Jun Yoon

IPC分类号： H04B15/00

CPC分类号： G01S3/86 ,  H04B7/0854 ,  H04R3/005 ,  H04R2430/20

摘要： A novel adaptive beamforming technique with enhanced noise suppression capability. The technique incorporates the sound-source presence probability into an adaptive blocking matrix. In one embodiment the sound-source presence probability is estimated based on the instantaneous direction of arrival of the input signals and voice activity detection. The technique guarantees robustness to steering vector errors without imposing ad hoc constraints on the adaptive filter coefficients. It can provide good suppression performance for both directional interference signals as well as isotropic ambient noise.

摘要翻译： 一种具有增强噪声抑制能力的新型自适应波束成形技术。 该技术将声源存在概率纳入自适应阻塞矩阵。 在一个实施例中，基于输入信号的瞬时到达方向和语音活动检测来估计声源存在概率。 该技术保证对导向矢量误差的鲁棒性，而不会对自适应滤波器系数施加自组织约束。 它可以为双向干扰信号以及各向同性环境噪声提供良好的抑制性能。

公开(公告)号：US09054764B2

公开(公告)日：2015-06-09

申请号：US13187235

申请日：2011-07-20

申请人： Ivan Tashev ,  Alejandro Acero

发明人： Ivan Tashev ,  Alejandro Acero

IPC分类号： H04R3/00 ,  H04B7/08

CPC分类号： H04B7/0854

摘要： A novel beamforming post-processor technique with enhanced noise suppression capability. The present beamforming post-processor technique is a non-linear post-processing technique for sensor arrays (e.g., microphone arrays) which improves the directivity and signal separation capabilities. The technique works in so-called instantaneous direction of arrival space, estimates the probability for sound coming from a given incident angle or look-up direction and applies a time-varying, gain based, spatio-temporal filter for suppressing sounds coming from directions other than the sound source direction, resulting in minimal artifacts and musical noise.

摘要翻译： 一种具有增强噪声抑制能力的新型波束成形后处理器技术。 本波束形成后处理器技术是用于传感器阵列（例如麦克风阵列）的非线性后处理技术，其改善了方向性和信号分离能力。 该技术在所谓的瞬时到达空间方向上工作，估计来自给定入射角或查找方向的声音的概率，并且应用时间变化的基于增益的时空滤波器来抑制来自其他方向的声音 比声源方向，导致最小的伪影和音乐噪音。

公开(公告)号：US08818002B2

公开(公告)日：2014-08-26

申请号：US13187618

申请日：2011-07-21

申请人： Ivan Tashev ,  Alejandro Acero ,  Byung-Jun Yoon

发明人： Ivan Tashev ,  Alejandro Acero ,  Byung-Jun Yoon

IPC分类号： H04B15/00 ,  G01S3/86 ,  H04R3/00 ,  H04B7/08

CPC分类号： G01S3/86 ,  H04B7/0854 ,  H04R3/005 ,  H04R2430/20

摘要： A novel adaptive beamforming technique with enhanced noise suppression capability. The technique incorporates the sound-source presence probability into an adaptive blocking matrix. In one embodiment the sound-source presence probability is estimated based on the instantaneous direction of arrival of the input signals and voice activity detection. The technique guarantees robustness to steering vector errors without imposing ad hoc constraints on the adaptive filter coefficients. It can provide good suppression performance for both directional interference signals as well as isotropic ambient noise.

摘要翻译： 一种具有增强噪声抑制能力的新型自适应波束成形技术。 该技术将声源存在概率纳入自适应阻塞矩阵。 在一个实施例中，基于输入信号的瞬时到达方向和语音活动检测来估计声源存在概率。 该技术保证对导向矢量误差的鲁棒性，而不会对自适应滤波器系数施加自组织约束。 它可以为双向干扰信号以及各向同性环境噪声提供良好的抑制性能。

公开(公告)号：US20080288219A1

公开(公告)日：2008-11-20

申请号：US11750319

申请日：2007-05-17

申请人： Ivan Tashev ,  Alejandro Acero

发明人： Ivan Tashev ,  Alejandro Acero

IPC分类号： H04B15/00 ,  G06F15/00

CPC分类号： H04B7/0854

摘要： A novel beamforming post-processor technique with enhanced noise suppression capability. The present beam forming post-processor technique is a non-linear post-processing technique for sensor arrays (e.g., microphone arrays) which improves the directivity and signal separation capabilities. The technique works in so-called instantaneous direction of arrival space, estimates the probability for sound coming from a given incident angle or look-up direction and applies a time-varying, gain based, spatio-temporal filter for suppressing sounds coming from directions other than the sound source direction resulting in minimal artifacts and musical noise.

摘要翻译： 一种具有增强噪声抑制能力的新型波束成形后处理器技术。 本发明的波束形成后处理器技术是用于提高方向性和信号分离能力的传感器阵列（例如，麦克风阵列）的非线性后处理技术。 该技术在所谓的瞬时到达空间方向上工作，估计来自给定入射角或查找方向的声音的概率，并且应用时间变化的基于增益的时空滤波器来抑制来自其他方向的声音 比声源方向导致最小的伪像和音乐噪声。

公开(公告)号：US20110274289A1

公开(公告)日：2011-11-10

申请号：US13187235

申请日：2011-07-20

申请人： Ivan Tashev ,  Alejandro Acero

发明人： Ivan Tashev ,  Alejandro Acero

IPC分类号： H04R3/00

CPC分类号： H04B7/0854

摘要： A novel beamforming post-processor technique with enhanced noise suppression capability. The present beamforming post-processor technique is a non-linear post-processing technique for sensor arrays (e.g., microphone arrays) which improves the directivity and signal separation capabilities. The technique works in so-called instantaneous direction of arrival space, estimates the probability for sound coming from a given incident angle or look-up direction and applies a time-varying, gain based, spatio-temporal filter for suppressing sounds coming from directions other than the sound source direction, resulting in minimal artifacts and musical noise.

摘要翻译： 一种具有增强噪声抑制能力的新型波束成形后处理器技术。 本波束形成后处理器技术是用于传感器阵列（例如麦克风阵列）的非线性后处理技术，其改善了方向性和信号分离能力。 该技术在所谓的瞬时到达空间方向上工作，估计来自给定入射角或查找方向的声音的概率，并且应用时间变化的基于增益的时空滤波器来抑制来自其他方向的声音 比声源方向，导致最小的伪影和音乐噪音。

公开(公告)号：US08005238B2

公开(公告)日：2011-08-23

申请号：US11689628

申请日：2007-03-22

申请人： Ivan Tashev ,  Alejandro Acero ,  Byung-Jun Yoon

发明人： Ivan Tashev ,  Alejandro Acero ,  Byung-Jun Yoon

IPC分类号： H04B15/00

CPC分类号： G01S3/86 ,  H04B7/0854 ,  H04R3/005 ,  H04R2430/20

摘要： A novel adaptive beamforming technique with enhanced noise suppression capability. The technique incorporates the sound-source presence probability into an adaptive blocking matrix. In one embodiment the sound-source presence probability is estimated based on the instantaneous direction of arrival of the input signals and voice activity detection. The technique guarantees robustness to steering vector errors without imposing ad hoc constraints on the adaptive filter coefficients. It can provide good suppression performance for both directional interference signals as well as isotropic ambient noise.

摘要翻译： 一种具有增强噪声抑制能力的新型自适应波束成形技术。 该技术将声源存在概率纳入自适应阻塞矩阵。 在一个实施例中，基于输入信号的瞬时到达方向和语音活动检测来估计声源存在概率。 该技术保证对导向矢量误差的鲁棒性，而不会对自适应滤波器系数施加自组织约束。 它可以为双向干扰信号以及各向同性环境噪声提供良好的抑制性能。

公开(公告)号：US08005237B2

公开(公告)日：2011-08-23

申请号：US11750319

申请日：2007-05-17

申请人： Ivan Tashev ,  Alejandro Acero

发明人： Ivan Tashev ,  Alejandro Acero

IPC分类号： H04R3/00

CPC分类号： H04B7/0854

摘要： A novel beamforming post-processor technique with enhanced noise suppression capability. The present beam forming post-processor technique is a non-linear post-processing technique for sensor arrays (e.g., microphone arrays) which improves the directivity and signal separation capabilities. The technique works in so-called instantaneous direction of arrival space, estimates the probability for sound coming from a given incident angle or look-up direction and applies a time-varying, gain based, spatio-temporal filter for suppressing sounds coming from directions other than the sound source direction resulting in minimal artifacts and musical noise.

摘要翻译： 一种具有增强噪声抑制能力的新型波束成形后处理器技术。 本发明的波束形成后处理器技术是用于提高方向性和信号分离能力的传感器阵列（例如，麦克风阵列）的非线性后处理技术。 该技术在所谓的瞬时到达空间方向上工作，估计来自给定入射角或查找方向的声音的概率，并且应用时间变化的基于增益的时空滤波器来抑制来自其他方向的声音 比声源方向导致最小的伪像和音乐噪声。

公开(公告)号：US08583428B2

公开(公告)日：2013-11-12

申请号：US12815408

申请日：2010-06-15

申请人： Ivan Tashev ,  Lae-Hoon Kim ,  Alejandro Acero ,  Jason Scott Flaks

发明人： Ivan Tashev ,  Lae-Hoon Kim ,  Alejandro Acero ,  Jason Scott Flaks

IPC分类号： G10L21/02 ,  G10L15/20 ,  G10L15/00 ,  G10L11/06

CPC分类号： G10L21/028 ,  G10L2021/02166

摘要： Described is a multiple phase process/system that combines spatial filtering with regularization to separate sound from different sources such as the speech of two different speakers. In a first phase, frequency domain signals corresponding to the sensed sounds are processed into separated spatially filtered signals including by inputting the signals into a plurality of beamformers (which may include nullformers) followed by nonlinear spatial filters. In a regularization phase, the separated spatially filtered signals are input into an independent component analysis mechanism that is configured with multi-tap filters, followed by secondary nonlinear spatial filters. Separated audio signals are the provided via an inverse-transform.

摘要翻译： 描述了将空间滤波与正则化组合的多相处理/系统，以分离来自不同来源的声音，例如两个不同扬声器的语音。 在第一阶段，对应于感测到的声音的频域信号被处理成分离的空间滤波信号，包括通过将信号输入到多个波束形成器（其可以包括零点形成器），随后是非线性空间滤波器。 在正则化阶段，分离的空间滤波信号被输入到配置有多抽头滤波器的独立分量分析机构，其次是次级非线性空间滤波器。 分离的音频信号是通过逆变换提供的。

公开(公告)号：US20110307251A1

公开(公告)日：2011-12-15

申请号：US12815408

申请日：2010-06-15

申请人： Ivan Tashev ,  Lae-Hoon Kim ,  Alejandro Acero ,  Jason Scott Flaks

发明人： Ivan Tashev ,  Lae-Hoon Kim ,  Alejandro Acero ,  Jason Scott Flaks

IPC分类号： G10L15/00

CPC分类号： G10L21/028 ,  G10L2021/02166

摘要： Described is a multiple phase process/system that combines spatial filtering with regularization to separate sound from different sources such as the speech of two different speakers. In a first phase, frequency domain signals corresponding to the sensed sounds are processed into separated spatially filtered signals including by inputting the signals into a plurality of beamformers (which may include nullformers) followed by nonlinear spatial filters. In a regularization phase, the separated spatially filtered signals are input into an independent component analysis mechanism that is configured with multi-tap filters, followed by secondary nonlinear spatial filters. Separated audio signals are the provided via an inverse-transform.

摘要翻译： 描述了将空间滤波与正则化组合的多相处理/系统，以分离来自不同来源的声音，例如两个不同扬声器的语音。 在第一阶段，对应于感测到的声音的频域信号被处理成分离的空间滤波信号，包括通过将信号输入到多个波束形成器（其可以包括零点形成器），随后是非线性空间滤波器。 在正则化阶段，分离的空间滤波信号被输入到配置有多抽头滤波器的独立分量分析机构，其次是次级非线性空间滤波器。 分离的音频信号是通过逆变换提供的。