Voice interface and vocal entertainment system

    公开(公告)号:US11348595B2

    公开(公告)日:2022-05-31

    申请号:US15835215

    申请日:2017-12-07

    Abstract: A system and method that enhances spoken utterances and provides entertainment by capturing one or more microphone signals containing echo and decomposing the one or more microphone signals into a plurality of signal paths through a synthesizer that adds or makes non-linear modifications to some of the captured one or more microphone signals. The system and method and estimates multiple echo paths from each of the one the one or more microphones. The system and method processes the captured microphone signals in response to the estimated plurality of echo paths by subtracting the echo contributions of each of the plurality of echo paths from the captured one or more microphone signals. The system and method also provide signal separation and post processing functions that renders speech recognition gaming applications.

    SYSTEM AND METHOD FOR MITIGATING AUDIO FEEDBACK
    5.
    发明申请
    SYSTEM AND METHOD FOR MITIGATING AUDIO FEEDBACK 有权
    用于减轻音频反馈的系统和方法

    公开(公告)号:US20160029124A1

    公开(公告)日:2016-01-28

    申请号:US14807441

    申请日:2015-07-23

    Abstract: A system and method for mitigating audio feedback may calculate a smoothed frequency spectrum of an audio signal. Previously detected candidate feedback tones may be obtained. Candidate feedback tones may be determined responsive to a frequency spectrum of the audio signal, the smoothed frequency spectrum and the previously detected candidate feedback tones. One or more signal characteristics associated with the audio signal and feedback coefficients associated with the candidate feedback tones may be obtained. The feedback coefficients may be modified responsive to the one or more signal characteristics. Actionable feedback tones may be determined responsive to the associated feedback coefficients exceeding a respective feedback threshold. Feedback suppression coefficients associated with each of the determined actionable feedback tones may be generated and may be utilized to suppress the actionable feedback tones.

    Abstract translation: 用于减轻音频反馈的系统和方法可以计算音频信号的平滑频谱。 可以获得先前检测到的候选反馈音。 可以响应于音频信号的频谱,平滑的频谱和先前检测的候选反馈音来确定候选反馈音。 可以获得与音频信号相关联的一个或多个信号特征以及与候选反馈音调相关联的反馈系数。 可以响应于一个或多个信号特性来修改反馈系数。 响应于超过相应反馈阈值的相关联的反馈系数,可以确定可操作的反馈音调。 可以生成与确定的可操作反馈音调中的每一个相关联的反馈抑制系数,并且可以用于抑制可操作的反馈音调。

    System and method for mitigating audio feedback

    公开(公告)号:US09854358B2

    公开(公告)日:2017-12-26

    申请号:US14807441

    申请日:2015-07-23

    Abstract: A system and method for mitigating audio feedback may calculate a smoothed frequency spectrum of an audio signal. Previously detected candidate feedback tones may be obtained. Candidate feedback tones may be determined responsive to a frequency spectrum of the audio signal, the smoothed frequency spectrum and the previously detected candidate feedback tones. One or more signal characteristics associated with the audio signal and feedback coefficients associated with the candidate feedback tones may be obtained. The feedback coefficients may be modified responsive to the one or more signal characteristics. Actionable feedback tones may be determined responsive to the associated feedback coefficients exceeding a respective feedback threshold. Feedback suppression coefficients associated with each of the determined actionable feedback tones may be generated and may be utilized to suppress the actionable feedback tones.

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