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    Audio decoding of multi-audio-object signal using upmixing
    1.
    发明授权
    Audio decoding of multi-audio-object signal using upmixing 有权
    使用上混音多声道对象信号的音频解码

    公开(公告)号：US08155971B2

    公开(公告)日：2012-04-10

    申请号：US12253442

    申请日：2008-10-17

    申请人： Oliver Hellmuth ,  Johannes Hilpert ,  Leonid Terentiev ,  Cornelia Falch ,  Andreas Hoelzer ,  Juergen Herre

    发明人： Oliver Hellmuth ,  Johannes Hilpert ,  Leonid Terentiev ,  Cornelia Falch ,  Andreas Hoelzer ,  Juergen Herre

    IPC分类号： G10L19/00

    CPC分类号： G10L19/04 ,  G10L19/008 ,  G10L19/20 ,  H04S3/002 ,  H04S2420/03 ,  H04S2420/07

    摘要： A method for decoding a multi-audio-object signal having audio signals of first and second types encoded therein, the multi-audio-object signal having a downmix signal and side information having level information of the audio signals of the first and second types in a first predetermined time/frequency resolution, the method including computing a prediction coefficient matrix C based on the level information; and up-mixing the downmix signal based on the prediction coefficients to obtain a first and/or a second up-mix audio signal approximating the audio signals of the first and second types, respectively, wherein up-mixing yields the first and/or second up-mix signals S1 and S2 from the downmix signal d according to a computation representable by ( S 1 S 2 ) = D - 1 ⁢ { ( 1 C ) ⁢ d + H } , with “1” denoting—depending on the number of channels of d—a scalar, or an identity matrix, and D−1 being a matrix uniquely determined by a downmix prescription according to which the audio signals of the first and second types are downmixed into the downmix signal, and which is also included by the side information, and H being a term independent from d.

    摘要翻译： 一种对其中编码有第一和第二类型的音频信号的多音频对象信号进行解码的方法，具有降混信号的多音频对象信号和具有第一和第二类型的音频信号的电平信息的侧信息 第一预定时间/频率分辨率，所述方法包括基于所述电平信息来计算预测系数矩阵C; 以及基于所述预测系数对所述下混合信号进行加混，以获得分别接近所述第一类型和第二类型的音频信号的第一和/或第二混合音频信号，其中上混合产生所述第一和/ 根据由（S 1 S 2）= D-1 {（1 C）d + H）表示的计算，来自下混合信号d的混合信号S1和S2，其中“1”表示取决于数字 的d-a标量或单位矩阵的信道，D-1是由缩混处方唯一确定的矩阵，根据该处理，第一和第二类型的音频信号被混合到下混合信号中，并且还包括 通过侧面信息，H是独立于d的术语。

    Audio decoder, audio object encoder, method for decoding a multi-audio-object signal, multi-audio-object encoding method, and non-transitory computer-readable medium therefor
    3.
    发明授权
    Audio decoder, audio object encoder, method for decoding a multi-audio-object signal, multi-audio-object encoding method, and non-transitory computer-readable medium therefor 有权
    音频解码器，音频对象编码器，用于解码多音频对象信号的方法，多音频对象编码方法及其非暂时性的计算机可读介质

    公开(公告)号：US08280744B2

    公开(公告)日：2012-10-02

    申请号：US12253515

    申请日：2008-10-17

    申请人： Oliver Hellmuth ,  Johannes Hilpert ,  Leonid Terentiev ,  Cornelia Falch ,  Andreas Hoelzer ,  Juergen Herre

    发明人： Oliver Hellmuth ,  Johannes Hilpert ,  Leonid Terentiev ,  Cornelia Falch ,  Andreas Hoelzer ,  Juergen Herre

    IPC分类号： G10L19/00

    CPC分类号： G10L19/04 ,  G10L19/008 ,  G10L19/20 ,  H04S3/002 ,  H04S2420/03 ,  H04S2420/07

    摘要： An audio decoder for decoding a multi-audio-object signal having an audio signal of a first type and an audio signal of a second type encoded therein is described, the multi-audio-object signal having a downmix signal and side information, the side information having level information of the audio signals of the first and second types in a first predetermined time/frequency resolution, and a residual signal specifying residual level values in a second predetermined time/frequency resolution, the audio decoder having a processor for computing prediction coefficients based on the level information; and an up-mixer for up-mixing the downmix signal based on the prediction coefficients and the residual signal to obtain a first up-mix audio signal approximating the audio signal of the first type and/or a second up-mix audio signal approximating the audio signal of the second type.

    摘要翻译： 描述用于解码具有第一类型的音频信号和其中编码的第二类型的音频信号的多音频对象信号的音频解码器，具有下混信号和侧信息的多音频对象信号 在第一预定时间/频率分辨率中具有第一和第二类型的音频信号的电平信息的信息，以及指定第二预定时间/频率分辨率中的剩余电平值的残差信号，该音频解码器具有用于计算预测系数的处理器 基于等级信息; 以及上混频器，用于基于预测系数和残差信号对混合信号进行混频，以获得近似第一类型的音频信号的第一上混合音频信号和/或接近第 第二种类型的音频信号。

    Binaural rendering of a multi-channel audio signal
    7.
    发明授权
    Binaural rendering of a multi-channel audio signal 有权
    双声道渲染多声道音频信号

    公开(公告)号：US08325929B2

    公开(公告)日：2012-12-04

    申请号：US13080685

    申请日：2011-04-06

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

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

    IPC分类号： H04R5/00

    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 is described. The multi-channel audio signal has a stereo downmix signal into which a plurality of audio signals are downmixed, and side information having a downmix information, as well as object level information of the plurality of audio signals and inter-object cross correlation information. Based on a first rendering prescription, a preliminary binaural signal is computed from the first and second channels of the stereo downmix signal. A decorrelated signal is generated as an perceptual equivalent to a mono downmix of the first and second channels of the stereo downmix signal being, however, decorrelated to the mono downmix. Depending on a second rendering prescription, a corrective binaural signal is computed from the decorrelated signal and the preliminary binaural signal is mixed with the corrective binaural signal to obtain the binaural output signal.

    摘要翻译： 描述了将双声道音频信号转换为双耳输出信号的双耳。 多声道音频信号具有多个音频信号被混合到其中的立体声下混合信号，以及具有下混信息的侧信息以及多个音频信号的对象级信息和对象间相互关系信息。 基于第一渲染处方，从立体声下混信号的第一和第二声道计算初步双耳信号。 产生解相关的信号作为等同于立体声下混信号的第一和第二声道的单声道下混的感知，然而，与单声道下混相关。 根据第二次呈现处方，根据解相关信号计算纠正性双耳信号，并将初步双耳信号与校正双耳信号混合以获得双耳输出信号。