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    Multi-channel echo compensation system
    22.
    发明申请
    Multi-channel echo compensation system 有权
    多通道回波补偿系统

    公开(公告)号：US20080031466A1

    公开(公告)日：2008-02-07

    申请号：US11787348

    申请日：2007-04-16

    申请人： Markus Buck ,  Tim Haulick ,  Martin Roessler ,  Gerhard Schmidt

    发明人： Markus Buck ,  Tim Haulick ,  Martin Roessler ,  Gerhard Schmidt

    IPC分类号： H04B3/20

    CPC分类号： H04M9/082 ,  H04R3/02 ,  H04R2499/13

    摘要： The invention is directed to a multi-channel echo compensation system, comprising two loudspeaker input channels, each loudspeaker input channel being connected to a loud-speaker for providing a loudspeaker input signal to be emanated by the loudspeaker, a microphone output channel being connected to at least one microphone for receiving a microphone output signal from the at least one microphone, wherein each microphone is configured to acquire a signal emanating from the loudspeakers, a compensation channel for each loudspeaker input channel, each compensation channel connecting a respective loudspeaker input channel and the microphone output channel, an adaptive compensation filter for each compensation channel, wherein each adaptive compensation filter is configured to filter a signal on the respective compensation channel such that a compensation output signal is provided to compensate a microphone output signal for a signal emanating from the loudspeakers, a pre-processing means for pre-processing loudspeaker input signals on the compensation channels, the pre-processing means being configured to determine a correlation value of the loudspeaker input signals for the two loudspeakers according to a pre-determined criterion and to de-activate one of the adaptive compensation filters if the determined correlation value passes a pre-determined threshold.

    摘要翻译： 本发明涉及一种多通道回波补偿系统，包括两个扬声器输入通道，每个扬声器输入通道连接到扬声器，用于提供由扬声器发出的扬声器输入信号;麦克风输出通道连接到 至少一个麦克风，用于从所述至少一个麦克风接收麦克风输出信号，其中每个麦克风被配置为获取从扬声器发出的信号，每个扬声器输入通道的补偿通道，每个补偿通道连接相应的扬声器输入通道和 麦克风输出通道，用于每个补偿通道的自适应补偿滤波器，其中每个自适应补偿滤波器被配置为对相应补偿通道上的信号进行滤波，使得提供补偿输出信号以补偿麦克风输出信号，以产生从 扬声器，预处理手段 用于在补偿通道上预处理扬声器输入信号，预处理装置被配置为根据预定准则确定两个扬声器的扬声器输入信号的相关值，并且去激活自适应补偿中的一个 如果确定的相关值通过预定阈值，则滤波器。

    SYSTEM FOR SPEECH SIGNAL ENHANCEMENT IN A NOISY ENVIRONMENT THROUGH CORRECTIVE ADJUSTMENT OF SPECTRAL NOISE POWER DENSITY ESTIMATIONS
    25.
    发明申请
    SYSTEM FOR SPEECH SIGNAL ENHANCEMENT IN A NOISY ENVIRONMENT THROUGH CORRECTIVE ADJUSTMENT OF SPECTRAL NOISE POWER DENSITY ESTIMATIONS 有权
    通过光谱噪声功率密度估计的正确调整，噪声环境中的语音信号增强系统

    公开(公告)号：US20090063143A1

    公开(公告)日：2009-03-05

    申请号：US12202147

    申请日：2008-08-29

    申请人： Gerhard Uwe Schmidt ,  Tobias Wolff ,  Markus Buck

    发明人： Gerhard Uwe Schmidt ,  Tobias Wolff ,  Markus Buck

    IPC分类号： G10L15/20

    CPC分类号： H04R3/00 ,  G10L21/0208 ,  G10L21/0216

    摘要： A system estimates the spectral noise power density of an audio signal includes a spectral noise power density estimation unit, a correction term processor, and a combination processor. The spectral noise power density estimation unit may provide a first estimate of the spectral noise power density of the audio signal. The correction term processor may provide a time dependent correction term based, at least in part, on a spectral noise power density estimation error of the actual spectral noise power density. The correction term may be determined so that the spectral noise power density estimation error is reduced. The combination processor may combine the first estimate with the correction term to obtain a second estimate of the spectral noise power density that may be used for subsequent signal processing to enhance a desired signal component of the audio signal.

    摘要翻译： 系统估计音频信号的频谱噪声功率密度包括频谱噪声功率密度估计单元，校正项处理器和组合处理器。 频谱噪声功率密度估计单元可以提供音频信号的频谱噪声功率密度的第一估计。 校正项处理器可以至少部分地基于实际频谱噪声功率密度的频谱噪声功率密度估计误差来提供时间相关校正项。 可以确定校正项，使得谱噪声功率密度估计误差降低。 组合处理器可以将第一估计与校正项组合以获得可用于后续信号处理以增强音频信号的期望信号分量的频谱噪声功率密度的第二估计。

    System for speech signal enhancement in a noisy environment through corrective adjustment of spectral noise power density estimations
    26.
    发明授权
    System for speech signal enhancement in a noisy environment through corrective adjustment of spectral noise power density estimations 有权
    通过频谱噪声功率密度估计的校正调整，在噪声环境中进行语音信号增强的系统

    公开(公告)号：US08364479B2

    公开(公告)日：2013-01-29

    申请号：US12202147

    申请日：2008-08-29

    申请人： Gerhard Uwe Schmidt ,  Tobias Wolff ,  Markus Buck

    发明人： Gerhard Uwe Schmidt ,  Tobias Wolff ,  Markus Buck

    IPC分类号： G10L21/02

    CPC分类号： H04R3/00 ,  G10L21/0208 ,  G10L21/0216

    摘要： A system estimates the spectral noise power density of an audio signal includes a spectral noise power density estimation unit, a correction term processor, and a combination processor. The spectral noise power density estimation unit may provide a first estimate of the spectral noise power density of the audio signal. The correction term processor may provide a time dependent correction term based, at least in part, on a spectral noise power density estimation error of the actual spectral noise power density. The correction term may be determined so that the spectral noise power density estimation error is reduced. The combination processor may combine the first estimate with the correction term to obtain a second estimate of the spectral noise power density that may be used for subsequent signal processing to enhance a desired signal component of the audio signal.

    摘要翻译： 系统估计音频信号的频谱噪声功率密度包括频谱噪声功率密度估计单元，校正项处理器和组合处理器。 频谱噪声功率密度估计单元可以提供音频信号的频谱噪声功率密度的第一估计。 校正项处理器可以至少部分地基于实际频谱噪声功率密度的频谱噪声功率密度估计误差来提供时间相关校正项。 可以确定校正项，使得谱噪声功率密度估计误差降低。 组合处理器可以将第一估计与校正项组合以获得可用于后续信号处理以增强音频信号的期望信号分量的频谱噪声功率密度的第二估计。

    VOICE CONTROL SYSTEM
    28.
    发明申请
    VOICE CONTROL SYSTEM 有权
    语音控制系统

    公开(公告)号：US20080262849A1

    公开(公告)日：2008-10-23

    申请号：US12023485

    申请日：2008-01-31

    申请人： Markus Buck ,  Lars Konig ,  Gerhard Uwe Schmidt

    发明人： Markus Buck ,  Lars Konig ,  Gerhard Uwe Schmidt

    IPC分类号： G10L11/00

    CPC分类号： G10L15/28 ,  G10L25/78

    摘要： A voice control system allows a user to control a device through voice commands. The voice control system includes a speech recognition unit that receives a control signal from a mobile device and a speech signal from a user. The speech recognition unit configures speech recognition settings in response to the control signal to improve speech recognition.

    摘要翻译： 语音控制系统允许用户通过语音命令来控制设备。 语音控制系统包括从移动设备接收控制信号和来自用户的语音信号的语音识别单元。 语音识别单元响应于控制信号配置语音识别设置以改善语音识别。

    Voice control system
    29.
    发明授权
    Voice control system 有权
    语音控制系统

    公开(公告)号：US08666750B2

    公开(公告)日：2014-03-04

    申请号：US12023485

    申请日：2008-01-31

    申请人： Markus Buck ,  Lars König ,  Gerhard Uwe Schmidt

    发明人： Markus Buck ,  Lars König ,  Gerhard Uwe Schmidt

    IPC分类号： G10L17/00 ,  G10L21/00

    CPC分类号： G10L15/28 ,  G10L25/78

    摘要： A voice control system allows a user to control a device through voice commands. The voice control system includes a speech recognition unit that receives a control signal from a mobile device and a speech signal from a user. The speech recognition unit configures speech recognition settings in response to the control signal to improve speech recognition.

    摘要翻译： 语音控制系统允许用户通过语音命令来控制设备。 语音控制系统包括从移动设备接收控制信号和来自用户的语音信号的语音识别单元。 语音识别单元响应于控制信号配置语音识别设置以改善语音识别。