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    Apparatus and method for edge fading amplitude panning
    7.
    发明授权
    Apparatus and method for edge fading amplitude panning 有权

    公开(公告)号：US10021499B2

    公开(公告)日：2018-07-10

    申请号：US15347493

    申请日：2016-11-09

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

    发明人： Christian Borss ,  Bernhard Grill

    IPC分类号： H04S5/00 ,  H04S3/00 ,  H03G3/20 ,  H04S7/00

    CPC分类号： H04S5/005 ,  H03G3/20 ,  H04S3/002 ,  H04S7/308 ,  H04S2400/01 ,  H04S2400/11

    摘要： An apparatus for generating four or more audio output signals has a panning gain determiner and a signal processor. The panning gain determiner is configured to determine a proper subset from a set of five or more loudspeaker positions, so that the proper subset has four or more of the five or more loudspeaker positions. Moreover, the panning gain determiner is configured to determine the proper subset depending on a panning position and on the five or more loudspeaker positions, and to determine a panning gain for each of the four or more audio output signals by determining the panning gain depending on the panning position and on the four or more loudspeaker positions of the proper subset. The signal processor is configured to generate each of the four or more audio output signals depending on the panning gain for the audio output signal and on an audio input signal.

    METHOD FOR DECODING AND ENCODING A DOWNMIX MATRIX, METHOD FOR PRESENTING AUDIO CONTENT, ENCODER AND DECODER FOR A DOWNMIX MATRIX, AUDIO ENCODER AND AUDIO DECODER
    8.
    发明申请
    METHOD FOR DECODING AND ENCODING A DOWNMIX MATRIX, METHOD FOR PRESENTING AUDIO CONTENT, ENCODER AND DECODER FOR A DOWNMIX MATRIX, AUDIO ENCODER AND AUDIO DECODER 有权
    用于解码和编码DownMIX矩阵的方法，用于呈现音频内容的方法，用于DownMIX矩阵的编码器和解码器，音频编码器和音频解码器

    公开(公告)号：US20160232901A1

    公开(公告)日：2016-08-11

    申请号：US15131263

    申请日：2016-04-18

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

    发明人： Florin Ghido ,  Achim Kuntz ,  Bernhard Grill

    IPC分类号： G10L19/008

    CPC分类号： G10L19/008

    摘要： A method is described which decodes a downmix matrix for mapping a plurality of input channels of audio content to a plurality of output channels, the input and output channels being associated with respective speakers at predetermined positions relative to a listener position, wherein the downmix matrix is encoded by exploiting the symmetry of speaker pairs of the plurality of input channels and the symmetry of speaker pairs of the plurality of output channels. Encoded information representing the encoded downmix matrix is received and decoded for obtaining the decoded downmix matrix.

    摘要翻译： 描述了一种对下混合矩阵进行解码的方法，用于将音频内容的多个输入通道映射到多个输出通道，该输入和输出通道相对于收听者位置在预定位置处与相应的扬声器相关联，其中下混合矩阵是 通过利用多个输入通道的扬声器对的对称性和多个输出通道的扬声器对的对称性进行编码。 接收并解码表示编码缩混矩阵的编码信息，以获得解码的下混矩阵。

    AUDIO ENCODER, AUDIO DECODER, METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL, AND A COMPUTER PROGRAM
    10.
    发明申请
    AUDIO ENCODER, AUDIO DECODER, METHODS FOR ENCODING AND DECODING AN AUDIO SIGNAL, AND A COMPUTER PROGRAM 有权
    音频编码器，音频解码器，编码和解码音频信号的方法以及计算机程序

    公开(公告)号：US20140236605A1

    公开(公告)日：2014-08-21

    申请号：US14157185

    申请日：2014-01-16

    申请人： Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung e.V.

    发明人： Nikolaus Rettelbach ,  Bernhard Grill ,  Guillaume Fuchs ,  Stefan Geyersberger ,  Markus Multrus ,  Harald Popp ,  Juergen Herre ,  Stefan Wabnik ,  Gerald Schuller ,  Jens Hirschfeld

    IPC分类号： G10L19/032

    CPC分类号： G10L19/035 ,  G10L19/008 ,  G10L19/02 ,  G10L19/0204 ,  G10L19/028 ,  G10L19/032 ,  G10L25/18

    摘要： An encoder for providing an audio stream on the basis of a transform-domain representation of an input audio signal includes a quantization error calculator configured to determine a multi-band quantization error over a plurality of frequency bands of the input audio signal for which separate band gain information is available. The encoder also includes an audio stream provider for providing the audio stream such that the audio stream includes information describing an audio content of the frequency bands and information describing the multi-band quantization error.A decoder for providing a decoded representation of an audio signal on the basis of an encoded audio stream representing spectral components of frequency bands of the audio signal includes a noise filler for introducing noise into spectral components of a plurality of frequency bands to which separate frequency band gain information is associated on the basis of a common multi-band noise intensity value.

    摘要翻译： 一种用于基于输入音频信号的变换域表示来提供音频流的编码器包括：量化误差计算器，被配置为在输入音频信号的多个频带上确定多频带量化误差， 获取信息可用。 编码器还包括用于提供音频流的音频流提供器，使得音频流包括描述频带的音频内容的信息和描述多频带量化误差的信息。 用于基于表示音频信号的频带的频带的频谱分量的编码音频流提供音频信号的解码表示的解码器包括噪声填充器，用于将噪声引入多个频带的频谱分量中，分频频带 增益信息是根据共同的多频带噪声强度值相关联的。