公开(公告)号：US08531917B2

公开(公告)日：2013-09-10

申请号：US12760360

申请日：2010-04-14

申请人： Weiwei Cui ,  Ki Wan Eom ,  Hyung-Joon Lim

发明人： Weiwei Cui ,  Ki Wan Eom ,  Hyung-Joon Lim

IPC分类号： G01S3/802

CPC分类号： G01S3/808

摘要： An apparatus for estimating a Direction of Arrival (DOA) of a wideband includes a first signal receiving unit and a second signal receiving unit to receive a wideband signal while satisfying d≦Mc/2fs, wherein ‘d’ denotes a distance the first signal receiving unit and the second signal receiving unit are spaced apart from each other, ‘c’ denotes the speed of sound, ‘M’ denotes a number of wideband frequencies being a number of fast Fourier transformation (FFT) points of a wideband signal, and ‘fs’ denotes a sampling frequency, and a DOA calculating unit to calculate a DOA (θ) using a normalized frequency ( f) which is obtained by performing an FFT on the respective wideband signals transmitted from the first signal receiving unit and the second signal receiving unit, and using the distance d.

摘要翻译： 用于估计宽带的到达方向（DOA）的装置包括第一信号接收单元和第二信号接收单元，用于在满足d @ Mc / 2fs的同时接收宽带信号，其中“d”表示第一信号接收的距离 单元和第二信号接收单元彼此间隔开，'c'表示声速，'M'表示宽带频率的数量，是宽带信号的快速傅里叶变换（FFT）点的数量， fs'表示采样频率，DOA计算单元使用通过对从第一信号接收单元发送的各个宽带信号执行FFT并且接收到的第二信号而获得的归一化频率（f）来计算DOA（θ） 单位，并使用距离d。

公开(公告)号：US20110082692A1

公开(公告)日：2011-04-07

申请号：US12846041

申请日：2010-07-29

申请人： Hyung Joon LIM ,  Ki Wan Eom ,  Weiwei Cui

发明人： Hyung Joon LIM ,  Ki Wan Eom ,  Weiwei Cui

IPC分类号： G10L21/02

CPC分类号： G10L21/0208 ,  G10L25/18

摘要： A method and apparatus for removing signal noise using multiple bands are provided. The noise removal apparatus may divide the entire frequency band into a plurality of sub-bands using a multiband filter that has characteristics similar to an auditory system of a human being and may effectively remove noise in each of the sub-bands according to a frequency subtraction scheme.

摘要翻译： 提供了一种使用多个频带去除信号噪声的方法和装置。 噪声去除装置可以使用具有与人类的听觉系统相似的特征的多频带滤波器将整个频带划分为多个子带，并且可以根据频率相减有效地去除每个子带中的噪声 方案。

公开(公告)号：US08477962B2

公开(公告)日：2013-07-02

申请号：US12843022

申请日：2010-07-24

申请人： Weiwei Cui ,  Ki Wan Eom ,  Hyung-Joon Lim

发明人： Weiwei Cui ,  Ki Wan Eom ,  Hyung-Joon Lim

IPC分类号： H04B15/00

CPC分类号： H04R3/005

摘要： A microphone signal compensation apparatus includes a plurality of audio input units to respectively receive a target signal, each audio input unit of the plurality of audio input units including a microphone; a constant filter unit to selectively apply a constant filtering calibration scheme to signals output by the plurality of audio input units to compensate for a difference in at least one characteristic among the audio input units, the constant filtering calibration scheme being estimated from an average value of a ratio of a desired signal to a reference signal among the signals output by the plurality of audio input units; and a noise remover to remove noise from the signals processed by the constant filter unit, and to separate the target signal from the signals from which the noise has been removed.

摘要翻译： 麦克风信号补偿装置包括分别接收目标信号的多个音频输入单元，所述多个音频输入单元的每个音频输入单元包括麦克风; 常数滤波器单元，用于选择性地对所述多个音频输入单元输出的信号施加恒定的滤波校准方案，以补偿所述音频输入单元中的至少一个特性的差异，所述恒定滤波校准方案是从平均值 由多个音频输入单元输出的信号中的期望信号与参考信号的比率; 以及噪声去除器，以从由恒定滤波器单元处理的信号中去除噪声，并且将目标信号与已经被去除噪声的信号分离。