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    Separation of target acoustic signals in a multi-transducer arrangement
    41.
    发明申请
    Separation of target acoustic signals in a multi-transducer arrangement 有权
    在多换能器布置中分离目标声信号

    公开(公告)号：US20070038442A1

    公开(公告)日：2007-02-15

    申请号：US11463376

    申请日：2006-08-09

    申请人： Erik Visser ,  Te-Won Lee

    发明人： Erik Visser ,  Te-Won Lee

    IPC分类号： G10L15/20

    CPC分类号： H04R3/005 ,  G10L21/0208 ,  G10L21/0272 ,  G10L2021/02161 ,  G10L2021/02165 ,  H04R2430/25

    摘要： The present invention provides a process for separating a good quality information signal from a noisy acoustic environment. The separation process uses a set of at least two spaced-apart transducers to capture noise and information components. The transducer signals, which have both a noise and information component, are received into a separation process. The separation process generates one channel that is substantially only noise, and another channel that is a combination of noise and information. An identification process is used to identify which channel has the information component. The noise signal is then used to set process characteristics that are applied to the combination signal to efficiently reduce or eliminate the noise component. In this way, the noise is effectively removed from the combination signal to generate a good qualify information signal. The information signal may be, for example, a speech signal, a seismic signal, a sonar signal, or other acoustic signal.

    摘要翻译： 本发明提供了一种用于从良好的声学环境中分离出良好质量信息信号的方法。 分离过程使用一组至少两个间隔开的传感器来捕获噪声和信息分量。 具有噪声和信息分量的换能器信号被接收到分离过程中。 分离过程产生基本上只有噪声的一个信道，以及作为噪声和信息的组合的另一个信道。 使用识别过程来识别哪个信道具有信息分量。 然后使用噪声信号来设置施加到组合信号的处理特性，以有效地减少或消除噪声分量。 以这种方式，有效地从组合信号中去除噪声以产生良好的限定信息信号。 信息信号可以是例如语音信号，地震信号，声纳信号或其他声信号。

    Systems, methods, apparatus, and computer-readable media for far-field multi-source tracking and separation
    42.
    发明授权
    Systems, methods, apparatus, and computer-readable media for far-field multi-source tracking and separation 有权
    用于远场多源跟踪和分离的系统，方法，设备和计算机可读介质

    公开(公告)号：US09100734B2

    公开(公告)日：2015-08-04

    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 ,  H04R3/00 ,  G10L21/0272 ,  G10L21/0216

    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。

    Generating a masking signal on an electronic device
    43.
    发明授权
    Generating a masking signal on an electronic device 有权
    在电子设备上产生屏蔽信号

    公开(公告)号：US08972251B2

    公开(公告)日：2015-03-03

    申请号：US13155187

    申请日：2011-06-07

    申请人： Pei Xiang ,  Joseph Jyh-huei Huang ,  Andre Gustavo Pucci Schevciw ,  Anthony Mauro ,  Erik Visser

    发明人： Pei Xiang ,  Joseph Jyh-huei Huang ,  Andre Gustavo Pucci Schevciw ,  Anthony Mauro ,  Erik Visser

    IPC分类号： G10L21/02

    CPC分类号： H04R3/005 ,  H04K1/02 ,  H04K3/43 ,  H04K3/45 ,  H04K3/825 ,  H04K2203/12 ,  H04M9/08 ,  H04R1/323 ,  H04R3/12 ,  H04R2430/01 ,  H04R2499/11

    摘要： An electronic device for generating a masking signal is described. The electronic device includes a plurality of microphones and a speaker. The electronic device also includes a processor and executable instructions stored in memory that is in electronic communication with the processor. The electronic device obtains a plurality of audio signals from the plurality of microphones. The electronic device also obtains an ambience signal based on the plurality of audio signals. The electronic device further determines an ambience feature based on the ambience signal. Additionally, the electronic device obtains a voice signal based on the plurality of audio signals. The electronic device also determines a voice feature based on the voice signal. The electronic device additionally generates a masking signal based on the voice feature and the ambience feature. The electronic device further outputs the masking signal using the speaker.

    摘要翻译： 描述用于产生掩蔽信号的电子设备。 电子设备包括多个麦克风和扬声器。 电子设备还包括存储在与处理器电子通信的存储器中的处理器和可执行指令。 电子设备从多个麦克风获得多个音频信号。 电子设备还基于多个音频信号获得环境信号。 电子设备还基于环境信号进一步确定环境特征。 此外，电子设备基于多个音频信号获得语音信号。 电子设备还基于语音信号确定语音特征。 电子设备还基于语音特征和氛围特征产生掩蔽信号。 电子设备还使用扬声器输出屏蔽信号。

    SYSTEMS, METHODS, APPARATUS, AND COMPUTER-READABLE MEDIA FOR DEREVERBERATION OF MULTICHANNEL SIGNAL
    45.
    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）。

    System and method for speech processing using independent component analysis under stability restraints
    46.
    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。

    Automated user/sensor location recognition to customize audio performance in a distributed multi-sensor environment
    47.
    发明授权
    Automated user/sensor location recognition to customize audio performance in a distributed multi-sensor environment 有权
    自动用户/传感器位置识别，可在分布式多传感器环境中自定义音频性能

    公开(公告)号：US09408011B2

    公开(公告)日：2016-08-02

    申请号：US13476815

    申请日：2012-05-21

    申请人： Lae-Hoon Kim ,  Pei Xiang ,  Erik Visser

    发明人： Lae-Hoon Kim ,  Pei Xiang ,  Erik Visser

    IPC分类号： H04R29/00 ,  H04S7/00 ,  H04R1/32 ,  H04R3/12

    CPC分类号： H04S7/303 ,  H04R1/323 ,  H04R3/12 ,  H04R29/002 ,  H04R2430/20 ,  H04S7/301 ,  H04S7/302

    摘要： A wireless device is provided that makes use of other nearby audio transducer devices to generate a surround sound effect for a targeted user. To do this, the wireless device first ascertains whether there are any nearby external microphones and/or loudspeaker devices. An internal microphone for the wireless device and any other nearby external microphones may be used to ascertain a location of the desired/targeted user as well as the nearby loudspeaker devices. This information is then used to generate a surround sound effect for the desired/targeted user by having the wireless device steer audio signals to its internal loudspeakers and/or the nearby external loudspeaker devices.

    摘要翻译： 提供了一种无线设备，其利用其他附近的音频传感器设备来为目标用户产生环绕声效果。 为此，无线设备首先确定是否存在附近的外部麦克风和/或扬声器设备。 用于无线设备和任何其他附近的外部麦克风的内部麦克风可以用于确定期望/目标用户以及附近的扬声器设备的位置。 然后，该信息用于通过使无线设备将音频信号转向其内部扬声器和/或附近的外部扬声器设备来为期望/目标用户生成环绕声效果。

    Systems, methods, apparatus, and computer-readable media for orientation-sensitive recording control
    48.
    发明授权
    Systems, methods, apparatus, and computer-readable media for orientation-sensitive recording control 有权
    用于方向敏感记录控制的系统，方法，装置和计算机可读介质

    公开(公告)号：US09031256B2

    公开(公告)日：2015-05-12

    申请号：US13280211

    申请日：2011-10-24

    申请人： Erik Visser ,  Ian Ernan Liu ,  Dinesh Ramakrishnan ,  Lae-Hoon Kim ,  Pei Xiang

    发明人： Erik Visser ,  Ian Ernan Liu ,  Dinesh Ramakrishnan ,  Lae-Hoon Kim ,  Pei Xiang

    IPC分类号： H04R3/00 ,  H04R1/02 ,  H04R9/06 ,  H04S7/00

    CPC分类号： H04R3/005 ,  H04R2201/401 ,  H04R2201/403 ,  H04R2201/405 ,  H04R2430/21 ,  H04R2430/23 ,  H04S7/303 ,  H04S2400/15

    摘要： A method of orientation-sensitive recording control includes indicating, within a portable device and at a first time, that the portable device has a first orientation relative to a gravitational axis and, based on the indication, selecting a first pair among at least three microphone channels of the portable device. This method also includes indicating, within the portable device and at a second time that is different than the first time, that the portable device has a second orientation relative to the gravitational axis that is different than the first orientation and, based on the indication, selecting a second pair among the at least three microphone channels that is different than the first pair. In this method, each the at least three microphone channels is based on a signal produced by a corresponding one of at least three microphones of the portable device.

    摘要翻译： 方向敏感记录控制的方法包括在便携式设备内并且在第一时间指示便携式设备相对于重力轴具有第一取向，并且基于该指示，在至少三个麦克风中选择第一对 便携式设备的通道。 该方法还包括在便携式设备内并且在与第一次不同的第二时间指示便携式设备相对于不同于第一方位的重力轴具有第二定向，并且基于该指示， 在所述至少三个麦克风通​​道中选择与所述第一对不同的第二对。 在该方法中，每个至少三个麦克风通​​道基于由便携式设备的至少三个麦克风中的对应的一个产生的信号。