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    Binaural rendering of a multi-channel audio signal
    2.
    发明公开
    Binaural rendering of a multi-channel audio signal 审中-公开
    Binaurale Aufbereitung eines Mehrkanal-Audiosignals

    公开(公告)号：EP2175670A1

    公开(公告)日：2010-04-14

    申请号：EP09006598.8

    申请日：2009-05-15

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Koninklijke Philips Electronics N.V. ,  Dolby Sweden AB ,  Mundt, Harald ,  Terentiev, Leonid ,  Falch, Cornelia ,  Hilpert, Johannes ,  Hellmuth, Oliver ,  Plogsties, Jan ,  Villemoes, Lars ,  Breebaart, Jeroen ,  Koppens, Jeroen ,  Engdegard, Jonas

    发明人： Koppens, Jeroen ,  Mundt, Harald ,  Terentiev, Leonid ,  Falch, Cornelia ,  Hilpert, Johannes ,  Hellmuth, Oliver ,  Plogsties, Jan ,  Villemoes, Lars ,  Breebaart, Jeroen ,  Engdegard, Jonas

    IPC分类号： H04S3/00

    CPC分类号： H04S3/004 ,  G10L19/008 ,  G10L19/20 ,  H04S1/005 ,  H04S2400/01 ,  H04S2420/01 ,  H04S2420/03

    摘要： Binaural rendering a multi-channel audio signal into a binaural output signal (24) is described. The multi-channel audio signal comprises a stereo downmix signal (18) into which a plurality of audio signals are downmixed, and side information comprising a downmix information (DMG, DCLD) indicating, for each audio signal, to what extent the respective audio signal has been mixed into a first channel and a second channel of the stereo downmix signal (18), respectively, as well as object level information of the plurality of audio signals and inter-object cross correlation information describing similarities between pairs of audio signals of the plurality of audio signals. Based on a first rendering prescription, a preliminary binaural signal (54) is computed from the first and second channels of the stereo downmix signal (18). A decorrelated signal X d n , k is generated as an perceptual equivalent to a mono downmix (58) of the first and second channels of the stereo downmix signal (18) being, however, decorrelated to the mono downmix (58). Depending on a second rendering prescription P 2 1 , m , a corrective binaural signal (64) is computed from the decorrelated signal (62) and the preliminary binaural signal (54) is mixed with the corrective binaural signal (64) to obtain the binaural output signal (24).

    摘要翻译： 描述将双声道音频信号双向渲染成双耳输出信号（24）。 多声道音频信号包括立体声下混合信号（18），多个音频信号被混合到其中，并且包括下混信息（DMG，DCLD）的侧信息指示对于每个音频信号，各个音频信号 分别混合到立体声下混合信号（18）的第一通道和第二通道中，以及描述多个音频信号的对象级别信息和描述对象音频信号对之间的相似性的对象间互相关信息 多个音频信号。 基于第一渲染处方，从立体声下混合信号（18）的第一和第二声道计算初步双耳信号（54）。 产生解相关信号X d n，k作为与立体声下混信号（18）的第一和第二声道的单声道下混频（58）的感知等效，然而，与单声道下混频（58）相关。 根据第二渲染处方P 2 1，m，从去相关信号（62）计算校正性双耳信号（64），并将预备双耳信号（54）与校正性双耳信号（64）混合以获得双耳 输出信号（24）。

    AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING AN UPMIX SIGNAL REPRESENTATION, METHOD FOR PROVIDING A DOWNMIX SIGNAL REPRESENTATION, COMPUTER PROGRAM AND BITSTREAM USING A COMMON INTER-OBJECT-CORRELATION PARAMETER VALUE
    5.
    发明公开
    AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, METHOD FOR PROVIDING AN UPMIX SIGNAL REPRESENTATION, METHOD FOR PROVIDING A DOWNMIX SIGNAL REPRESENTATION, COMPUTER PROGRAM AND BITSTREAM USING A COMMON INTER-OBJECT-CORRELATION PARAMETER VALUE 审中-公开
    音频信号解码器，音频信号编码器，方法提供了一个混信号表示，一种用于提供混信号表示，计算机程序和STREAM采用通用的INTER-物体相关参数value

    公开(公告)号：EP3093843A1

    公开(公告)日：2016-11-16

    申请号：EP16176048.3

    申请日：2010-09-28

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB

    发明人： Hölzer, Andreas ,  Herre, Jürgen ,  Hilpert, Johannes ,  Engdegard, Jonas ,  Purnhagen, Heiko

    IPC分类号： G10L19/005 ,  G10L19/20 ,  H04S3/02 ,  H04S5/00

    CPC分类号： G10L19/008 ,  G10L19/005 ,  G10L19/20 ,  H04S3/02 ,  H04S5/005 ,  H04S2420/03

    摘要： An audio signal decoder for providing an upmix signal representation on the basis of a downmix signal representation and an object-related parametric information and in dependence on a rendering information comprises an object parameter determinator. The object parameter determinator is configured to obtain inter-object-correlation values for a plurality of pairs of audio objects. The object parameter determinator is configured to evaluate a bitstream signaling parameter in order to decide whether to evaluate individual inter-object-correlation bitstream parameter values to obtain inter-object-correlation values for a plurality of pairs of related audio objects, or to obtain inter-object-correlation values for a plurality of pairs of related audio objects using a common inter-object-correlation bitstream parameter value. The audio signal decoder also comprises a signal processor configured to obtain the upmix signal representation on the basis of the downmix signal representation and using the inter-object-correlation values for a plurality of pairs of related objects and the rendering information.

    摘要翻译： 用于提供对上混的下混合信号表示的基础上，信号表示和所述的音频信号解码器的对象相关的参数信息，并在一个渲染信息相依性包含对象参数确定的。 对象参数确定器被配置以获得用于对音频对象中的多元对象间互相关值。 对象参数确定器被配置成评估一个比特流，以便决定是否要评估个体对象间互相关的比特流的参数值，以获得用于对相关音频对象的一个​​。多个对象间互相关值，或获得除信令参数 用于使用共用对象间互相关位流参数值相关音频对象对一个多元化-object相关值。 音频信号解码器，以便包括被配置为获得所述下混信号表示的基础上，上混信号表示，并使用对象间互相关值对相关对象的多个部分并加以渲染信息的信号处理器。

    Audio signal encoder, audio bitstream, method and computer program using an object-related parametric information
    6.
    发明公开
    Audio signal encoder, audio bitstream, method and computer program using an object-related parametric information 有权
    音频信号编码器，音频比特流，使用对象相关参数信息的方法和计算机程序

    公开(公告)号：EP2816555A1

    公开(公告)日：2014-12-24

    申请号：EP14180279.3

    申请日：2010-04-28

    申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. ,  Dolby International AB

    发明人： Herre, Jürgen ,  Hölzer, Andreas ,  Terentiv, Leon ,  Falch, Cornelia ,  Purnhagen, Heiko ,  Engdegard, Jonas ,  Ridderbusch, Falko ,  Kastner, Thorsten

    IPC分类号： G10L19/008 ,  G10L19/20

    CPC分类号： G10L19/008 ,  G10L19/20

    摘要： An audio signal encoder (600) for providing a downmix signal representation (614) and an object-related parametric information (616) on the basis of a plurality of object signals (x 1 to x N ) comprises a downmixer (620) configured to provide one or more downmix signals in dependence on downmix coefficients (d 1 to d N ) associated with the object signals (x 1 to x N ), such that the one or more downmix signals comprise a superposition of a plurality of object signals, and a side information provider (630) configured to provide an inter-object-relationship side information (OLD, IOC) describing level differences and correlation characteristics of object signals (x 1 to x N ) and an individual-object side information describing one or more individual properties of the individual object signals (x 1 to x N ).

    摘要翻译： 用于提供下混信号表示（614）和音频信号编码器（600）对象有关的对象信号（X 1至X N）的多个的基础上的参数信息（616）包括被配置成一个下混频器（620） 在与所述对象信号（X 1至X N）相关联的缩混系数（D 1至D N）的依赖性提供一个或多个下混合信号，审查没有所述一个或多个下混合信号包括对象信号的多个叠加，并 配置一个辅助信息提供者（630），以提供到对象间关系的辅助信息（OLD，IOC）描述电平差和对象信号（X 1至X N）的相关特性，以及单个对象侧信息描述的一个或多个 各个对象信号的个人属性（x 1至x N）。

    Parametric coding of the stereo image of an audio signal
    10.
    发明授权
    Parametric coding of the stereo image of an audio signal 有权
    的音频信号的立体声声音图像的参数编码

    公开(公告)号：EP1768454B1

    公开(公告)日：2013-06-12

    申请号：EP06026639.2

    申请日：2004-04-30

    申请人： Dolby International AB

    发明人： Engdegard, Jonas ,  Villemoes, Lars

    IPC分类号： H04S3/00 ,  H04S5/00 ,  G10L19/00

    CPC分类号： G10L19/008 ,  G10L19/0204 ,  H03H17/0266 ,  H04S5/00 ,  H04S2420/03

    摘要： A synthesizer for generating a decorrelation signal using an input signal is operative on a plurality of subband signals, wherein a subband signal includes a sequence of at least two subband samples, the sequence of the subband samples representing a bandwidth of the subband signal, which is smaller than a bandwidth of the input signal. The synthesizer includes a filter stage (201) for filtering each subband signal using a reverberation filter to obtain a plurality of reverberated subband signals, wherein a plurality of reverberated subband signals together represent the decorrelation signal. This decorrelation signal is used for reconstructing a signal based on a parametrically encoded stereo signal consisting of a mono signal and a coherence measure.