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62 条记录 (耗时 0.04 秒)

    Systems, methods, and apparatus for speech feature detection
    4.
    发明授权
    Systems, methods, and apparatus for speech feature detection 有权
    用于语音特征检测的系统，方法和装置

    公开(公告)号：US09165567B2

    公开(公告)日：2015-10-20

    申请号：US13092502

    申请日：2011-04-22

    申请人： Erik Visser ,  Ian Ernan Liu ,  Jongwon Shin

    发明人： Erik Visser ,  Ian Ernan Liu ,  Jongwon Shin

    IPC分类号： G10L21/00 ,  G10L25/78

    CPC分类号： G10L25/78

    摘要： Implementations and applications are disclosed for detection of a transition in a voice activity state of an audio signal, based on a change in energy that is consistent in time across a range of frequencies of the signal. For example, such detection may be based on a time derivative of energy for each of a number of different frequency components of the signal.

    摘要翻译： 公开了实现和应用，用于基于在信号的频率范围内的时间上一致的能量变化来检测音频信号的语音活动状态中的转换。 例如，这种检测可以基于信号的多个不同频率分量中的每一个的能量的时间导数。

    Systems, methods, apparatus, and computer-readable media for orientation-sensitive recording control
    6.
    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。

    Integrated echo cancellation and noise suppression
    9.
    发明授权
    Integrated echo cancellation and noise suppression 有权
    集成回声消除和噪声抑制

    公开(公告)号：US08811601B2

    公开(公告)日：2014-08-19

    申请号：US13079548

    申请日：2011-04-04

    申请人： Asif I. Mohammad ,  Kwokleung Chan ,  Ian Ernan Liu ,  Erik Visser ,  Dinesh Ramakrishnan

    发明人： Asif I. Mohammad ,  Kwokleung Chan ,  Ian Ernan Liu ,  Erik Visser ,  Dinesh Ramakrishnan

    IPC分类号： H04M9/08 ,  H04B3/23

    CPC分类号： H04B3/234 ,  G10L21/0208 ,  G10L2021/02082 ,  G10L2021/02166 ,  H04M9/082

    摘要： A method for echo cancellation and noise suppression is disclosed. Linear echo cancellation (LEC) is performed for a primary microphone channel on an entire frequency band or in a range of frequencies where echo is audible. LEC is performed on one or more secondary microphone channels only on a lower frequency range over which spatial processing is effective. The microphone channels are spatially processed over the lower frequency range after LEC. Non-linear noise suppression post-processing is performed on the entire frequency band. Echo post-processing is performed on the entire frequency band.

    摘要翻译： 公开了一种用于回波消除和噪声抑制的方法。 线性回波消除（LEC）是在整个频带上的主要麦克风通道或在可听见回声的频率范围内执行的。 只有在空间处理有效的较低频率范围上的一个或多个辅助麦克风通道上执行LEC。 麦克风通道在LEC之后的较低频率范围内进行空间处理。 在整个频带上执行非线性噪声抑制后处理。 在整个频带上执行回波后处理。