公开(公告)号：US20040220800A1

公开(公告)日：2004-11-04

申请号：US10836207

申请日：2004-05-03

Applicant: Samsung Electronics Co., Ltd

Inventor： Dong-geon Kong ,  Chang-kyu Choi ,  Seok-won Bang ,  Bon-young Lee

IPC: G10L011/00

CPC classification number: G10L21/0208 ,  G10L2021/02166 ,  H04R1/406 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/403

Abstract: A microphone array system including an input unit to receive sound signals using a plurality of microphones; a frequency splitter splitting each sound signal received into a plurality of narrowband signals; an average spatial covariance matrix estimator using spatial smoothing to obtain a spatial covariance matrix for each frequency component of the sound signal, by which spatial covariance matrices for a plurality of virtual sub-arrays, which are configured in the plurality of microphones, are obtained with respect to each frequency component of the sound signal and an average spatial covariance matrix is calculated; a signal source location detector to detect an incidence angle of the sound signal according to the average spatial covariance matrix calculated; a signal distortion compensator to calculates a weight for each frequency component of the sound signal based on the incidence angle of the sound signal and multiply the calculated weight by each frequency component.

Abstract translation: 一种麦克风阵列系统，包括使用多个麦克风接收声音信号的输入单元; 将接收到的每个声音信号分成多个窄带信号的分频器; 使用空间平滑来获得声音信号的每个频率分量的空间协方差矩阵的平均空间协方差矩阵估计器，通过该平均空间协方差矩阵获得在多个麦克风中配置的多个虚拟子阵列的空间协方差矩阵， 计算声音信号的每个频率分量和平均空间协方差矩阵; 信号源位置检测器，用于根据所计算的平均空间协方差矩阵来检测声音信号的入射角; 信号失真补偿器，用于基于声音信号的入射角来计算声音信号的每个频率分量的权重，并将计算出的权重乘以每个频率分量。

公开(公告)号：US20040175006A1

公开(公告)日：2004-09-09

申请号：US10793270

申请日：2004-03-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Jaywoo Kim ,  Dong-geon Kong ,  Chang-kyu Choi

IPC: H04R003/00

CPC classification number: H04R1/406 ,  H04R3/005 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2430/23 ,  H04R2430/25

Abstract: A microphone array, beam forming method and apparatus using the microphone array, and a method and apparatus for estimating an acoustic source direction using the microphone array are provided. The apparatus for forming constant directivity beams comprising: a microphone array, which is comprised of first through n-th microphone sub-arrays, wherein each of the microphone sub-arrays comprises: a first microphone placed at a predetermined location on a flat plate, which commonly belongs to each of the microphone sub-arrays; and second and third microphones placed at locations perpendicularly spaced by a predetermined segment from a straight line connecting the first microphone and the center of the flat plate, the predetermined segment being determined depending on a target frequency allotted to reach of the microphone sub-arrays, a beam formation unit receiving voice signals output from the first through n-th microphone sub-arrays and generating a beam for each of the first through n-th microphone sub-arrays; a filtering unit filtering the beams output from the beam formation unit; and an adding unit adding the filtered signals output from the filtering unit.

Abstract translation: 麦克风阵列，波束形成方法和使用麦克风阵列的装置，以及用于使用麦克风阵列来估计声源方向的方法和装置。 用于形成恒定方向性光束的装置包括：由第一至第n麦克风子阵列组成的麦克风阵列，其中每个麦克风子阵列包括：放置在平板上的预定位置的第一麦克风， 其通常属于每个麦克风子阵列; 以及第二和第三麦克风放置在与连接第一麦克风和平板的中心的直线与预定片段垂直间隔的位置处，该预定片段根据分配给麦克风子阵列的目标频率来确定， 波束形成单元接收从第一至第N麦克风子阵列输出的声音信号，并为第一至第N麦克风子阵列中的每一个生成波束; 滤波单元，滤波从光束形成单元输出的光束; 以及添加单元，将从滤波单元输出的滤波信号相加。