利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

62 条记录 (耗时 0.042 秒)

    SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR DEREVERBERATION OF MULTICHANNEL SIGNAL
    41.
    发明申请
    SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR DEREVERBERATION OF MULTICHANNEL SIGNAL 审中-公开
    系统，方法，设备和用于多通道信号分析的计算机可读介质

    公开(公告)号：US20110058676A1

    公开(公告)日：2011-03-10

    申请号：US12876163

    申请日：2010-09-05

    申请人： Erik Visser

    发明人： Erik Visser

    IPC分类号： H04R5/00

    CPC分类号： G10L2021/02082 ,  G10L2021/02166

    摘要： Systems, methods, apparatus, and computer-readable media for dereverberation of a multimicrophone signal combine use of a directionally selective processing operation (e.g., beamforming) with an inverse filter trained on a separated reverberation estimate that is obtained using a decorrelation operation (e.g., a blind source separation operation).

    摘要翻译： 用于复听器的混响的系统，方法，装置和计算机可读介质组合使用定向选择性处理操作（例如，波束形成）与使用解相关操作获得的分离混响估计训练的逆滤波器（例如， 盲源分离操作）。

    Robust separation of speech signals in a noisy environment
    42.
    发明授权
    Robust separation of speech signals in a noisy environment 有权
    语音信号在嘈杂环境中的鲁棒分离

    公开(公告)号：US07464029B2

    公开(公告)日：2008-12-09

    申请号：US11187504

    申请日：2005-07-22

    申请人： Erik Visser ,  Jeremy Toman ,  Kwokleung Chan

    发明人： Erik Visser ,  Jeremy Toman ,  Kwokleung Chan

    IPC分类号： G10L19/14 ,  G10L11/06 ,  G10L21/02 ,  G10L15/20

    CPC分类号： G10L25/78 ,  G10L21/0272 ,  G10L2021/02165 ,  H04R2410/07

    摘要： A method for improving the quality of a speech signal extracted from a noisy acoustic environment is provided. In one approach, a signal separation process is associated with a voice activity detector. The voice activity detector is a two-channel detector, which enables a particularly robust and accurate detection of voice activity. When speech is detected, the voice activity detector generates a control signal. The control signal is used to activate, adjust, or control signal separation processes or post-processing operations to improve the quality of the resulting speech signal. In another approach, a signal separation process is provided as a learning stage and an output stage. The learning stage aggressively adjusts to current acoustic conditions, and passes coefficients to the output stage. The output stage adapts more slowly, and generates a speech-content signal and a noise dominant signal. When the learning stage becomes unstable, only the learning stage is reset, allowing the output stage to continue outputting a high quality speech signal.

    摘要翻译： 提供了一种用于改善从噪声声环境提取的语音信号的质量的方法。 在一种方法中，信号分离过程与语音活动检测器相关联。 语音活动检测器是双通道检测器，能够对语音活动进行特别鲁棒和准确的检测。 当检测到语音时，语音活动检测器产生控制信号。 控制信号用于激活，调整或控制信号分离处理或后处理操作，以提高所得语音信号的质量。 在另一种方法中，提供信号分离过程作为学习阶段和输出阶段。 学习阶段积极地调整到当前的声学条件，并将系数传递到输出级。 输出级更慢地适应，并产生语音内容信号和噪声主导信号。 当学习阶段变得不稳定时，只有学习阶段被复位，允许输出级继续输出高质量的语音信号。

    System and method for speech processing using independent component analysis under stability restraints
    43.
    发明申请
    System and method for speech processing using independent component analysis under stability restraints 有权
    在稳定性约束下使用独立分量分析进行语音处理的系统和方法

    公开(公告)号：US20060053002A1

    公开(公告)日：2006-03-09

    申请号：US10537985

    申请日：2003-12-11

    申请人： Erik Visser ,  Te-Won Lee

    发明人： Erik Visser ,  Te-Won Lee

    IPC分类号： G10L11/00

    CPC分类号： G10L21/0272

    摘要： A system and method for separating a mixture of audio signal into desired audio signals (430) (e.g., speech) and a noise sign (440) is disclosed. Microphones (310, 320) are positioned to receive the mixed audio signals, and an independent component analysis (ICA) processes (212) the sound mixture using stability constraints. The ICA process (508) uses predefined characteristics of the desired speech signal to identify and isolate a target sound signal (430). Filter coefficients are adapted with a learning rule and filter weight update dynamics are stabilized to assist convergence to a stable separated ICA signal result. The separated signals may be peripherally-processed to further reduce noise effects using post-processing (214) and pre-processing (220, 230) techniques and information. The proposed system is designed and easily adaptable for implementation on DSP units or CPUs in audio communication hardware environments.

    摘要翻译： 公开了一种用于将音频信号的混合分离成所需音频信号（430）（例如语音）和噪声信号（440）的系统和方法。 麦克风（310,320）被定位成接收混合音频信号，并且独立分量分析（ICA）使用稳定性约束来处理（212）声音混合。 ICA处理（508）使用所需语音信号的预定特征来识别和隔离目标声音信号（430）。 滤波器系数适应于学习规则，并且滤波器权重更新动态被稳定以辅助收敛到稳定的分离的ICA信号结果。 可以对分离的信号进行外围处理，以进一步减少使用后处理（214）和预处理（220,230）技术和信息的噪声影响。 所提出的系统设计和易于适应于在音频通信硬件环境中的DSP单元或CPU上的实现。

    Systems, method, apparatus, and computer-readable media for decomposition of a multichannel music signal
    44.
    发明授权
    Systems, method, apparatus, and computer-readable media for decomposition of a multichannel music signal 有权
    用于分解多声道音乐信号的系统，方法，装置和计算机可读介质

    公开(公告)号：US09111526B2

    公开(公告)日：2015-08-18

    申请号：US13280309

    申请日：2011-10-24

    申请人： Erik Visser ,  Lae-Hoon Kim ,  Jongwon Shin

    发明人： Erik Visser ,  Lae-Hoon Kim ,  Jongwon Shin

    IPC分类号： H04R29/00 ,  H04R3/00 ,  G06F17/00 ,  G10L19/008 ,  G10L21/0272 ,  G10L19/02

    CPC分类号： G10L19/008 ,  G10L19/0204 ,  G10L21/0272

    摘要： A method of decomposing a multichannel audio signal is described. The method includes, for each of a plurality of frequency components of a segment in time of the multichannel audio signal, calculating a corresponding indication of a direction of arrival. The method also includes, based on the calculated direction indications, selecting a subset of the plurality of frequency components. The method further includes, based on the selected subset and on a plurality of basis functions, calculating a vector of activation coefficients. Each activation coefficient of the vector corresponds to a different basis function of the plurality of basis functions.

    摘要翻译： 描述分解多声道音频信号的方法。 该方法包括对于多声道音频信号的时间段的多个频率分量中的每一个，计算出到达方向的相应指示。 该方法还包括基于所计算的方向指示，选择多个频率分量的子集。 该方法还包括基于所选择的子集和多个基函数来计算激活系数的向量。 矢量的每个激活系数对应于多个基函数的不同基函数。

    SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR FAR-FIELD MULTI-SOURCE TRACKING AND SEPARATION
    48.
    发明申请
    SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR FAR-FIELD MULTI-SOURCE TRACKING AND SEPARATION 有权
    用于田间多源跟踪和分离的系统，方法，装置和计算机可读介质

    公开(公告)号：US20120099732A1

    公开(公告)日：2012-04-26

    申请号：US13243492

    申请日：2011-09-23

    申请人： Erik Visser

    发明人： Erik Visser

    IPC分类号： H04R5/00

    CPC分类号： H04R3/005 ,  G10L21/0272 ,  G10L2021/02166 ,  H04R2430/23

    摘要： An apparatus for multichannel signal processing separates signal components from different acoustic sources by initializing a separation filter bank with beams in the estimated source directions, adapting the separation filter bank under specified constraints, and normalizing an adapted solution based on a maximum response with respect to direction. Such an apparatus may be used to separate signal components from sources that are close to one another in the far field of the microphone array.

    摘要翻译： 用于多信道信号处理的装置通过在估计的源方向上用波束初始化分离滤波器组来分离来自不同声源的信号分量，使得分离滤波器组在规定的约束条件下适应，并且基于相对于方向的最大响应来归一化适应的解 。 这样的装置可以用于将信号分量与麦克风阵列的远场中彼此靠近的源分离。

    Systems, methods, and apparatus for signal separation using data driven techniques
    49.
    发明授权
    Systems, methods, and apparatus for signal separation using data driven techniques 有权
    使用数据驱动技术进行信号分离的系统，方法和装置

    公开(公告)号：US08160273B2

    公开(公告)日：2012-04-17

    申请号：US12197924

    申请日：2008-08-25

    申请人： Erik Visser ,  Kwokleung Chan ,  Hyun Jin Park

    发明人： Erik Visser ,  Kwokleung Chan ,  Hyun Jin Park

    IPC分类号： H04B15/00

    CPC分类号： G10L21/0272

    摘要： Methods, apparatus, and systems for source separation include a converged plurality of coefficient values that is based on each of a plurality of M-channel signals. Each of the plurality of M-channel signals is based on signals produced by M transducers in response to at least one information source and at least one interference source. In some examples, the converged plurality of coefficient values is used to filter an M-channel signal to produce an information output signal and an interference output signal.

    摘要翻译： 用于源分离的方法，装置和系统包括基于多个M信道信号中的每一个的会聚的多个系数值。 多个M信道信号中的每一个基于由M个换能器响应于至少一个信息源和至少一个干扰源产生的信号。 在一些示例中，收敛的多个系数值用于滤波M信道信号以产生信息输出信号和干扰输出信号。