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    APPARATUS AND METHOD FOR ENHANCING AN AUDIO SIGNAL, SOUND ENHANCING SYSTEM
    3.
    发明授权
    APPARATUS AND METHOD FOR ENHANCING AN AUDIO SIGNAL, SOUND ENHANCING SYSTEM 有权

    公开(公告)号：EP3175445B1

    公开(公告)日：2020-04-15

    申请号：EP15745433.1

    申请日：2015-07-27

    申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.

    发明人： UHLE, Christian ,  GAMPP, Patrick ,  HELLMUTH, Oliver ,  VARGA, Stefan ,  SCHARRER, Sebastian

    IPC分类号： G10L19/008 ,  G10L21/0264

    摘要： An apparatus for enhancing an audio signal comprises a signal processor for processing the audio signal in order to reduce or eliminate transient and tonal portions of the processed signal and a decorrelator for generating a first decorrelated signal and a second decorrelated signal from the processed signal. The apparatus further comprises a combiner for weightedly combining the first and the second decorrelated signal and the audio signal or a signal derived from the audio signal by coherence enhancement using time variant weighting factors and to obtain a two-channel audio signal. The apparatus further comprises a controller for controlling the time variant weighting factors by analyzing the audio signal so that different portions of the audio signal are multiplied by different weighting factors and the two-channel audio signal has a time variant degree of decorrelation.

    APPARATUS AND METHOD FOR IMPROVING THE PERCEIVED QUALITY OF SOUND REPRODUCTION BY COMBINING ACTIVE NOISE CANCELLATION AND PERCEPTUAL NOISE COMPENSATION
    9.
    发明公开
    APPARATUS AND METHOD FOR IMPROVING THE PERCEIVED QUALITY OF SOUND REPRODUCTION BY COMBINING ACTIVE NOISE CANCELLATION AND PERCEPTUAL NOISE COMPENSATION 审中-公开
    装置和一种用于改善感知声品质再现按组合主动降噪和感知噪声补偿的

    公开(公告)号：EP2831871A1

    公开(公告)日：2015-02-04

    申请号：EP13726121.0

    申请日：2013-03-25

    申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung e.V.

    发明人： UHLE, Christian ,  HERRE, Jürgen ,  WALTHER, Andreas ,  FLEISCHMANN, Felix ,  GAMPP, Patrick

    IPC分类号： G10K11/178

    CPC分类号： H04R3/002 ,  G10K11/178 ,  G10K2210/1081 ,  G10K2210/3014 ,  G10K2210/509 ,  H04R2460/01

    摘要： An apparatus for improving a perceived quality of sound reproduction of an audio output signal is provided. The apparatus comprises an active noise cancellation unit (110) for generating a noise cancellation signal based on an environmental audio signal, wherein the environmental audio signal comprises noise signal portions, the noise signal portions resulting from recording environmental noise. Moreover, the apparatus comprises a residual noise characteristics estimator (120) for determining a residual noise characteristic depending on the environmental noise and the noise cancellation signal. Furthermore, the apparatus comprises a perceptual noise compensation unit (130) for generating a noise-compensated signal based on an audio target signal and based on the residual noise characteristic. Moreover, the apparatus comprises a combiner (140) for combining the noise cancellation signal and the noise- compensated signal to obtain the audio output signal.

    摘要翻译： 提供了一种用于改进的音频输出信号的声音再现的感知质量的装置。 有源噪声消除单元（110），用于产生在环境音频信号基于噪声消除信号，worin环境音频信号的设备包括：包括噪声信号部分，所述噪声信号部分从记录环境噪声引起。 更上方，该装置包括一个残留噪声特性估计器（120），用于确定的采矿残余噪声特性根据环境噪声和所述噪声消除信号。 进一步，该装置包括一个感知噪声补偿单元（130），用于基于音频对象的信号，基于所述残留噪声特性的噪声补偿的信号。 更上方，该装置包括用于将所述噪声消除信号和所述噪声补偿的信号，以获得所述音频输出信号的组合器（140）。