公开(公告)号：US08116478B2

公开(公告)日：2012-02-14

申请号：US12013875

申请日：2008-01-14

申请人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

发明人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  G10L21/0208 ,  G10L2021/02166 ,  H04R1/406 ,  H04R2430/20

摘要： Disclosed are an apparatus and a method for beamforming in consideration of characteristics of an actual noise environment. The apparatus includes a microphone array having at least microphone, the microphone array outputting a signal input through the microphone; a coherence function generation unit for calculating coherences for input signals according to each space between microphones, calculating averages of the coherences for the same distance, and filtering the calculated averages of the coherences and outputting the resultant values, when an input signal is input; a spatial filter factor calculation unit for calculating and outputting a spatial filter factor by using the filtered average coherences; and a beamforming execution unit for performing a beamforming for the input signals by using the spatial filter factor, thereby outputting a noise-processed signal.

摘要翻译： 公开了考虑到实际噪声环境的特性的波束成形的装置和方法。 该装置包括至少具有麦克风的麦克风阵列，麦克风阵列输出通过麦克风输入的信号; 相干函数产生单元，用于根据麦克风之间的每个空间计算输入信号的相干度，计算相同距离的相干的平均值，以及当输入输入信号时滤波所计算的相干的平均值并输出结果值; 空间滤波器因子计算单元，用于通过使用滤波的平均相位来计算和输出空间滤波因子; 以及波束形成执行单元，用于通过使用空间滤波器因子对输入信号执行波束成形，由此输出经噪声处理的信号。

公开(公告)号：US20080187152A1

公开(公告)日：2008-08-07

申请号：US12013875

申请日：2008-01-14

申请人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

发明人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  G10L21/0208 ,  G10L2021/02166 ,  H04R1/406 ,  H04R2430/20

摘要： Disclosed are an apparatus and a method for beamforming in consideration of characteristics of an actual noise environment. The apparatus includes a microphone array having at least microphone, the microphone array outputting a signal input through the microphone; a coherence function generation unit for calculating coherences for input signals according to each space between microphones, calculating averages of the coherences for the same distance, and filtering the calculated averages of the coherences and outputting the resultant values, when an input signal is input; a spatial filter factor calculation unit for calculating and outputting a spatial filter factor by using the filtered average coherences; and a beamforming execution unit for performing a beamforming for the input signals by using the spatial filter factor, thereby outputting a noise-processed signal.

摘要翻译： 公开了考虑到实际噪声环境的特性的波束成形的装置和方法。 该装置包括至少具有麦克风的麦克风阵列，麦克风阵列输出通过麦克风输入的信号; 相干函数产生单元，用于根据麦克风之间的每个空间计算输入信号的相干度，计算相同距离的相干的平均值，以及当输入输入信号时滤波所计算的相干的平均值并输出结果值; 空间滤波器因子计算单元，用于通过使用滤波的平均相位来计算和输出空间滤波因子; 以及波束形成执行单元，用于通过使用空间滤波器因子对输入信号执行波束成形，由此输出经噪声处理的信号。

公开(公告)号：US08577677B2

公开(公告)日：2013-11-05

申请号：US12460473

申请日：2009-07-20

申请人： Hyun-Soo Kim ,  Hanseok Ko ,  Jounghoon Beh ,  Taekjin Lee

发明人： Hyun-Soo Kim ,  Hanseok Ko ,  Jounghoon Beh ,  Taekjin Lee

IPC分类号： G10L21/02

CPC分类号： G10L21/0272 ,  G10L2021/02166

摘要： A system and method for sound source separation. The system and method use a beamforming technique. The sound source separation system includes a windowing processor; a DFT transformer; a transfer function estimator; and a noise estimator. The system also includes a voice signal extractor that cancels individual voice signals, except an individual voice signal that is desired to be extracted among individual voice signals, from the integrated voice signals. The system further includes a voice signal detector that cancels a noise part provided through the noise estimator from a transfer function of an individual voice signal which is desired to be detected and extracts a noise-canceled individual voice signal. Even when two or more sound sources are simultaneously input, the sound sources can be separated from each other and separately stored and managed, or an initial sound source can be stored and managed.

摘要翻译： 一种声源分离的系统和方法。 该系统和方法使用波束成形技术。 声源分离系统包括开窗处理器; DFT变压器; 传递函数估计器; 和噪声估计器。 该系统还包括语音信号提取器，除了从各个语音信号中提取的单个语音信号之外，还可以从集成语音信号中消除各个语音信号。 该系统还包括语音信号检测器，该语音信号检测器根据期望被检测的单独语音信号的传递函数来消除通过噪声估计器提供的噪声部分，并提取噪声消除的个体语音信号。 即使当同时输入两个或更多个声源时，声源可以彼此分开并分开存储和管理，或者可以存储和管理初始声源。

公开(公告)号：US08135586B2

公开(公告)日：2012-03-13

申请号：US12053144

申请日：2008-03-21

申请人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

发明人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

IPC分类号： G10L19/10

CPC分类号： G10L21/0208

摘要： Disclosed is a method and an apparatus for estimating noise included in a sound signal during sound signal processing. The method includes estimating harmonics components in a frame of an input sound signal; using the estimated harmonics components, computing a Voice Presence Probability (VPP) on the frame of the input sound signal; determining a weight of an equation necessary to estimate a noise spectrum, depending on the computed VPP; and using the determined weight and the equation necessary to estimate a noise spectrum, estimating the noise spectrum, and updating the noise spectrum.

摘要翻译： 公开了一种用于在声音信号处理期间估计包括在声音信号中的噪声的方法和装置。 该方法包括估计输入声音信号的帧中的谐波分量; 使用估计的谐波分量，在输入声音信号的帧上计算声音概率（VPP）; 根据所计算的VPP确定估计噪声谱所必需的方程的权重; 并且使用所确定的权重和所需的等式来估计噪声谱，估计噪声谱和更新噪声谱。

公开(公告)号：US08774952B2

公开(公告)日：2014-07-08

申请号：US12455873

申请日：2009-06-09

申请人： Hyun-Soo Kim ,  Hanseok Ko ,  Jounghoon Beh ,  Taekjin Lee

发明人： Hyun-Soo Kim ,  Hanseok Ko ,  Jounghoon Beh ,  Taekjin Lee

IPC分类号： G06F17/00

CPC分类号： G10K11/178 ,  G10K2210/111

摘要： An adaptive mode control apparatus and method for adaptive beamforming based on detection of a user direction sound are provided. The adaptive mode control apparatus includes a signal intensity detector that searches for signal intensity of each designated direction to detect signal intensity having a maximum value when a voice signal of each direction is input through at least one microphone; and an adaptive mode controller that compares the signal intensity having the maximum value detected through the signal intensity detector with a threshold value and determines whether to perform an adaptive mode of a Generalized Sidelobe Canceller (GSC) according to the comparison results. Therefore, a lack of control of adaptation of an adaptive filter of the conventional art is solved. That is, as one condition for guaranteeing performance of adaptive beamforming, adaptation of an adaptive filter is not performed when noise of a sound with a high autocorrelation is cancelled.

摘要翻译： 提供了一种基于用户方向声音检测的自适应波束成形的自适应模式控制装置和方法。 自适应模式控制装置包括信号强度检测器，当通过至少一个麦克风输入每个方向的语音信号时，搜索每个指定方向的信号强度以检测具有最大值的信号强度; 以及自适应模式控制器，其将具有通过信号强度检测器检测到的最大值的信号强度与阈值进行比较，并且根据比较结果确定是否执行广义旁瓣消除器（GSC）的自适应模式。 因此，解决了传统技术的自适应滤波器的适应性缺乏控制。 也就是说，作为用于保证自适应波束形成的性能的一个条件，当取消具有高自相关性的声音的噪声时，不执行自适应滤波器的自适应。

公开(公告)号：US20100017206A1

公开(公告)日：2010-01-21

申请号：US12460473

申请日：2009-07-20

申请人： Hyun-Soo Kim ,  Hanseok Ko ,  Jounghoon Beh ,  Taekjin Lee

发明人： Hyun-Soo Kim ,  Hanseok Ko ,  Jounghoon Beh ,  Taekjin Lee

IPC分类号： G10L15/20

CPC分类号： G10L21/0272 ,  G10L2021/02166

摘要： A system and method for sound source separation. The system and method use a beamforming technique. The sound source separation system includes a windowing processor; a DFT transformer; a transfer function estimator; and a noise estimator. The system also includes a voice signal extractor that cancels individual voice signals, except an individual voice signal that is desired to be extracted among individual voice signals, from the integrated voice signals. The system further includes a voice signal detector that cancels a noise part provided through the noise estimator from a transfer function of an individual voice signal which is desired to be detected and extracts a noise-canceled individual voice signal. Even when two or more sound sources are simultaneously input, the sound sources can be separated from each other and separately stored and managed, or an initial sound source can be stored and managed.

摘要翻译： 一种声源分离的系统和方法。 该系统和方法使用波束成形技术。 声源分离系统包括开窗处理器; DFT变压器; 传递函数估计器; 和噪声估计器。 该系统还包括语音信号提取器，除了从各个语音信号中提取的单个语音信号之外，还可以从集成语音信号中消除各个语音信号。 该系统还包括语音信号检测器，该语音信号检测器根据期望被检测的单独语音信号的传递函数来消除通过噪声估计器提供的噪声部分，并提取噪声消除的个体语音信号。 即使当同时输入两个或更多个声源时，声源可以彼此分开并分开存储和管理，或者可以存储和管理初始声源。

公开(公告)号：US20080235013A1

公开(公告)日：2008-09-25

申请号：US12053144

申请日：2008-03-21

申请人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

发明人： Hyun-Soo Kim ,  Hanseok Ko ,  Sung-Joo Ahn ,  Jounghoon Beh ,  Hyun-Jin Yoon

IPC分类号： G10L15/20

CPC分类号： G10L21/0208

摘要： Disclosed is a method and an apparatus for estimating noise included in a sound signal during sound signal processing. The method includes estimating harmonics components in a frame of an input sound signal; using the estimated harmonics components, computing a Voice Presence Probability (VPP) on the frame of the input sound signal; determining a weight of an equation necessary to estimate a noise spectrum, depending on the computed VPP; and using the determined weight and the equation necessary to estimate a noise spectrum, estimating the noise spectrum, and updating the noise spectrum.

摘要翻译： 公开了一种用于在声音信号处理期间估计包括在声音信号中的噪声的方法和装置。 该方法包括估计输入声音信号的帧中的谐波分量; 使用估计的谐波分量，在输入声音信号的帧上计算声音概率（VPP）; 根据所计算的VPP确定估计噪声谱所必需的方程的权重; 并且使用所确定的权重和所需的等式来估计噪声谱，估计噪声谱和更新噪声谱。