公开(公告)号：US07181026B2

公开(公告)日：2007-02-20

申请号：US10486784

申请日：2001-08-13

申请人： Ming Zhang ,  Zhuliang Yu ,  Hui Lan

发明人： Ming Zhang ,  Zhuliang Yu ,  Hui Lan

IPC分类号： H04R3/00

CPC分类号： H04R3/005 ,  H04R2410/01

摘要： The present invention provides an adaptive directional microphone system for enhancing an acoustic signal from a second direction and for reducing an acoustic signal from at least a first direction different from the second direction, the system comprising: an omni-directional microphone and a directional microphone being arranged in a closely acoustically-coupled way; an adaptive filtering circuit system for generating a first error signal e1(n) corresponding to an acoustic signal in which the acoustic signal from the first direction is reduced; and a post-processing filter system for producing a second error signal e2(n) corresponding to an acoustic signal in which the acoustic signal from the second direction is enhanced as compared to the acoustic signal related to the first error signal e1(n).

摘要翻译： 本发明提供了一种用于增强来自第二方向的声信号并用于从至少不同于第二方向的第一方向减少声信号的自适应定向麦克风系统，该系统包括：全向麦克风和定向麦克风， 以紧密的声耦合方式布置; 自适应滤波电路系统，用于产生与其中来自第一方向的声信号减小的声信号相对应的第一误差信号e 1（n） 以及后处理滤波器系统，用于与与第一误差信号e 1（n）相关的声信号相比较，产生与来自第二方向的声信号相对应的声信号的第二误差信号e 2（n） ）。

公开(公告)号：US06917688B2

公开(公告)日：2005-07-12

申请号：US10238867

申请日：2002-09-11

申请人： Zhuliang Yu ,  Wee Ser

发明人： Zhuliang Yu ,  Wee Ser

IPC分类号： G10K11/178 ,  H04M9/08 ,  H04B15/00

CPC分类号： H04M9/08 ,  G10K11/178 ,  G10K2210/108 ,  G10K2210/1082 ,  G10K2210/3018

摘要： An adaptive noise canceling microphone system for extracting a desired signal, in particular a desired speech signal, comprising two microphones being arranged at a predefined distance from each other; a signal forming system (SFS) being adapted to receive a first and second input signals resulting from sounds received by the two microphones wherein an acoustical signal component in the first input signal is determined, wherein an acoustical signal component in the second input signal is determined, wherein the acoustical signal component in the first input signal is enhanced to generate a speech enhanced signal, and wherein the acoustical signal component in the second input signal is suppressed to generate a speech nulled signal; an adaptive noise cancellation filtering circuit being adapted to receive the speech enhanced signal and the speech nulled signal, wherein the noise in the speech enhanced signal is cancelled using the speech nulled signal as reference, thereby generating an output filtered signal representing the desired signal.

摘要翻译： 一种自适应噪声消除麦克风系统，用于提取期望的信号，特别是期望的语音信号，包括彼此以预定距离布置的两个麦克风; 信号形成系统（SFS）适于接收由两个麦克风接收的声音产生的第一和第二输入信号，其中确定第一输入信号中的声学信号分量，其中确定第二输入信号中的声音信号分量 其中，增强所述第一输入信号中的所述声学信号分量以产生语音增强信号，并且其中抑制所述第二输入信号中的所述声学信号分量以产生语音无效信号; 自适应噪声消除滤波电路，其适于接收所述语音增强信号和所述语音无效信号，其中使用所述语音无效信号作为参考来消除所述语音增强信号中的所述噪声，由此产生表示所述期望信号的输出滤波信号。

公开(公告)号：US20110257536A1

公开(公告)日：2011-10-20

申请号：US13063964

申请日：2008-09-15

申请人： Wee Ser ,  Zhuliang Yu ,  Fan Yang

发明人： Wee Ser ,  Zhuliang Yu ,  Fan Yang

IPC分类号： A61B5/0205

CPC分类号： A61B5/0205 ,  A61B5/024 ,  A61B5/0507 ,  A61B5/0816 ,  A61B5/7257

摘要： A method for detecting heartbeat and/or respiration is provided. The method provided includes receiving a wave signal, and analyzing the received wave signal using a heartbeat and/or respiratory model, thereby providing a result signal indicating whether the received wave signal represents heartbeat and/or respiration.

摘要翻译： 提供了一种用于检测心跳和/或呼吸的方法。 所提供的方法包括接收波信号，以及使用心跳和/或呼吸模型分析所接收的波信号，从而提供指示所接收的波信号是否表示心跳和/或呼吸的结果信号。

公开(公告)号：US07092529B2

公开(公告)日：2006-08-15

申请号：US10285641

申请日：2002-11-01

申请人： Zhuliang Yu ,  Ming Zhang ,  Hui Lan ,  Susanto Rahardja

发明人： Zhuliang Yu ,  Ming Zhang ,  Hui Lan ,  Susanto Rahardja

IPC分类号： A61F11/06 ,  H03B29/00 ,  G10K11/16

CPC分类号： G10L21/0208 ,  G10L2021/02165

摘要： An adaptive noise canceling system for extracting a desired signal, comprising an adaptive noise cancellation filtering circuit for suppressing noise from a first input signal using a second input signal as a reference signal, and generating an output filtered signal representing the desired signal; and an adaptive noise cancellation controller for receiving the first and second input signals and the output filtered signal, and generating an output control signal for controlling coefficients of at least one adaptive filter of the adaptive noise cancellation filtering circuit, comprising a silence detector unit for detecting whether an acoustical signal is present in the input signals and the output filtered signal, and generating a first output signal which indicates whether the acoustical signal is present; a signal detector unit for detecting whether the desired signal is present in the input signals and the output filtered signal, and generating a second output signal which indicates whether the desired signal is present; and an adaptive noise cancellation filter (ANCF) controller unit for receiving the first and second output signal to determine the characteristic of the input signals, and generating the output control signal which represents an updated coefficient parameter for updating the coefficients of the at least one adaptive filter of the adaptive noise cancellation filtering circuit.

摘要翻译： 一种用于提取期望信号的自适应噪声消除系统，包括：使用第二输入信号作为参考信号来抑制来自第一输入信号的噪声的自适应噪声消除滤波电路，以及产生表示所述期望信号的输出滤波信号; 以及自适应噪声消除控制器，用于接收第一和第二输入信号和输出滤波信号，并且产生用于控制自适应噪声消除滤波电路的至少一个自适应滤波器的系数的输出控制信号，包括用于检测的静音检测器单元 输入信号和输出滤波信号中是否存在声信号，以及产生指示声信号是否存在的第一输出信号; 信号检测器单元，用于检测所述输入信号和所述输出滤波信号中是否存在所述期望信号，并产生指示所述期望信号是否存在的第二输出信号; 以及自适应噪声消除滤波器（ANCF）控制器单元，用于接收第一和第二输出信号以确定输入信号的特性，并且产生表示更新的系数参数的输出控制信号，用于更新至少一个自适应 滤波器的自适应噪声消除滤波电路。