利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

8 条记录 (耗时 0.014 秒)

    APPARATUS FOR STEREO FILLING IN MULTICHANNEL CODING
    1.
    发明公开
    APPARATUS FOR STEREO FILLING IN MULTICHANNEL CODING 审中-公开

    公开(公告)号：EP4421803A2

    公开(公告)日：2024-08-28

    申请号：EP24188661.3

    申请日：2017-02-14

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

    发明人： DICK, Sascha ,  HELMRICH, Christian ,  RETTELBACH, Nikolaus ,  SCHUH, Florian ,  FÜG, Richard ,  NAGEL, Frederik

    IPC分类号： G10L19/028

    CPC分类号： G10L19/028 ,  G10L19/008

    摘要： An apparatus for decoding an encoded multichannel signal of a current frame to obtain three or more current audio output channels is provided. A multichannel processor is adapted to select two decoded channels from three or more decoded channels depending on first multichannel parameters. Moreover, the multichannel processor is adapted to generate a first group of two or more processed channels based on said selected channels. A noise filling module is adapted to identify for at least one of the selected channels, one or more frequency bands, within which all spectral lines are quantized to zero, and to generate a mixing channel using, depending on side information, a proper subset of three or more previous audio output channels that have been decoded, and to fill the spectral lines of frequency bands, within which all spectral lines are quantized to zero, with noise generated using spectral lines of the mixing channel.

    APPARATUS FOR STEREO FILLING IN MULTICHANNEL CODING
    5.
    发明公开
    APPARATUS FOR STEREO FILLING IN MULTICHANNEL CODING 审中-公开

    公开(公告)号：EP4421803A3

    公开(公告)日：2024-10-30

    申请号：EP24188661.3

    申请日：2017-02-14

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

    发明人： DICK, Sascha ,  HELMRICH, Christian ,  RETTELBACH, Nikolaus ,  SCHUH, Florian ,  FÜG, Richard ,  NAGEL, Frederik

    IPC分类号： G10L19/008 ,  G10L19/028

    摘要： An apparatus for decoding an encoded multichannel signal of a current frame to obtain three or more current audio output channels is provided. A multichannel processor is adapted to select two decoded channels from three or more decoded channels depending on first multichannel parameters. Moreover, the multichannel processor is adapted to generate a first group of two or more processed channels based on said selected channels. A noise filling module is adapted to identify for at least one of the selected channels, one or more frequency bands, within which all spectral lines are quantized to zero, and to generate a mixing channel using, depending on side information, a proper subset of three or more previous audio output channels that have been decoded, and to fill the spectral lines of frequency bands, within which all spectral lines are quantized to zero, with noise generated using spectral lines of the mixing channel.

    APPARATUS AND METHOD FOR ENCODING OR DECODING A MULTI-CHANNEL SIGNAL
    8.
    发明公开
    APPARATUS AND METHOD FOR ENCODING OR DECODING A MULTI-CHANNEL SIGNAL 审中-公开
    用于编码或解码多信道信号的装置和方法

    公开(公告)号：EP3268959A1

    公开(公告)日：2018-01-17

    申请号：EP16709344.2

    申请日：2016-03-08

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

    发明人： DICK, Sascha ,  SCHUH, Florian ,  RETTELBACH, Nikolaus ,  SCHWEGLER, Tobias ,  FÜG, Richard ,  HILPERT, Johannes ,  NEUSINGER, Matthias

    IPC分类号： G10L19/008

    CPC分类号： G10L19/008 ,  G10L19/02 ,  H04S3/008 ,  H04S2400/01

    摘要： Embodiments provide an apparatus for encoding a multi-channel signal having at least three channels. The apparatus comprises an iteration processor, a channel encoder and an output interface. The iteration processor is configured to calculate, in a first iteration step, inter-channel correlation values between each pair of the at least three channels, for selecting, in the first iteration step, a pair having a highest value or having a value above a threshold, and for processing the selected pair using a multi-channel processing operation to derive first multi-channel parameters for the selected pair and to derive first processed channels. Further, the iteration processor is configured to perform the calculating, the selecting and the processing in a second iteration step using at least one of the processed channels to derive second multi-channel parameters and second processed channels. The channel encoder is configured to encode channels resulting from an iteration processing performed by the iteration processor to obtain encoded channels. The output interface is configured to generate an encoded multi-channel signal having the encoded channels and the first and the second multi-channel parameters.