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    METHODS AND ARRANGEMENTS FOR AUDIO CODING AND DECODING
    5.
    发明公开
    METHODS AND ARRANGEMENTS FOR AUDIO CODING AND DECODING 有权
    法及音频编码和解码安排

    公开(公告)号：EP1991986A4

    公开(公告)日：2011-08-03

    申请号：EP07716105

    申请日：2007-03-07

    Applicant: ERICSSON TELEFON AB L M

    Inventor： TALEB ANISSE

    IPC: G10L19/14 ,  G10L19/04

    CPC classification number: G10L19/06 ,  G10L19/04 ,  G10L19/24

    Abstract: A method for audio coding and decoding comprises primary encoding of a present audio signal sample into an encoded representation (T(n)), and non-causal encoding of a first previous audio signal sample into an encoded enhancement representation (ET(n−N+)). The method further comprises providing of the encoded representations to an end user. At the end user, the method comprises primary decoding of the encoded representation (T*(n)) into a present received audio signal sample, and non-causal decoding of the encoded enhancement representation (ET*(n−N+)) into an enhancement first previous received audio signal sample. The method further comprises improving of a first previous received audio signal sample, corresponding to the first previous audio signal sample, based on the enhancement first previous received audio signal sample. Devices and systems for audio coding and decoding are also presented.

    SUCCESSIVELY REFINABLE LATTICE VECTOR QUANTIZATION
    6.
    发明申请
    SUCCESSIVELY REFINABLE LATTICE VECTOR QUANTIZATION 审中-公开
    可靠的精简矢量量化

    公开(公告)号：WO2007035148A3

    公开(公告)日：2007-05-10

    申请号：PCT/SE2006001043

    申请日：2006-09-12

    Applicant: ERICSSON TELEFON AB L M ,  TALEB ANISSE

    Inventor： TALEB ANISSE

    IPC: H03M7/30

    CPC classification number: H03M7/3082

    Abstract: A vector quantizer includes a lattice quantizer (10) approximating a vector x by a lattice vector belonging to a lattice ? 0 . A lattice vector decomposer (14) connected to the lattice quantizer successively decomposes the lattice vector into a sequence of quotient vectors y, and a sequence of remainder vectors r i on successive lattices ? I-1 by lattice division with a corresponding predetermined sequence of integers p

    Abstract translation: 矢量量化器包括通过属于格子φ0的晶格矢量近似矢量x的晶格量化器（10）。 连接到晶格量化器的晶格矢量分解器（14）将晶格矢量依次分解成一个商矢量y的序列，并且在连续晶格上的剩余矢量序列ΠI-1 通过与相应的预定的整数序列p进行点划分

    OPTIMIZED FIDELITY AND REDUCED SIGNALING IN MULTI-CHANNEL AUDIO ENCODING
    7.
    发明申请
    OPTIMIZED FIDELITY AND REDUCED SIGNALING IN MULTI-CHANNEL AUDIO ENCODING 审中-公开
    多通道音频编码的优化和减少信号

    公开(公告)号：WO2006091151B1

    公开(公告)日：2006-12-14

    申请号：PCT/SE2006000235

    申请日：2006-02-22

    Applicant: ERICSSON TELEFON AB L M ,  TALEB ANISSE ,  ANDERSSON STEFAN

    Inventor： TALEB ANISSE ,  ANDERSSON STEFAN

    IPC: G10L19/00 ,  H04B1/66

    CPC classification number: G10L19/008 ,  G10L19/24

    Abstract: The invention provides an efficient technique for encoding a multi-channel audio signal. The invention relies on the principle of encoding (Sl) a signal representation of one or more of the multiple channels in a first encoding process, and encoding another signal representation of one or more channels in a second, filter-based encoding process. A basic idea according to the invention is to select (S2), for the second encoding process, a combination of i) frame division configuration of an overall encoding frame into a set of sub-frames, and ii) filter length for each sub-frame, according to a predetermined criterion. The second signal representation is then encoded (S3) in each sub-frame of the overall encoding frame according to the selected combination. The possibility to select frame division configuration and at the same time adjust the filter length for each sub-frame provides added degrees of freedom, and generally results in improved performance.

    Abstract translation: 本发明提供了一种用于对多声道音频信号进行编码的有效技术。 本发明依赖于在第一编码过程中编码（S1）一个或多个多个信道的信号表示的原理，以及在第二个基于过滤器的编码过程中编码一个或多个信道的另一个信号表示。 根据本发明的基本思想是，对于第二编码处理，选择（S2）i）将整个编码帧的帧分配配置成一组子帧的组合，以及ii）每个子帧的滤波器长度， 帧，根据预定标准。 然后根据所选择的组合，在整个编码帧的每个子帧中对第二信号表示进行编码（S3）。 选择帧分配配置并同时调整每个子帧的滤波器长度的可​​能性提供了附加的自由度，并且通常导致改进的性能。

    IMPROVED FILTER SMOOTHING IN MULTI-CHANNEL AUDIO ENCODING AND/OR DECODING
    9.
    发明公开
    IMPROVED FILTER SMOOTHING IN MULTI-CHANNEL AUDIO ENCODING AND/OR DECODING 有权
    改进的过滤器晚上MULTI-CHANNEL AUDIOCODIERUNG-和/或解码

    公开(公告)号：EP1851759A4

    公开(公告)日：2010-08-25

    申请号：EP06716924

    申请日：2006-02-22

    Applicant: ERICSSON TELEFON AB L M

    Inventor： TALEB ANISSE ,  ANDERSSON STEFAN

    IPC: H04B1/66 ,  G10L19/00

    CPC classification number: G10L19/008 ,  G10L19/24

    Abstract: The invention provides a highly efficient technique for encoding a multi-channel audio signal. The invention relies on the basic principle of encoding a first signal representation of one or more of the multiple channels in a first encoder and encoding a second signal representation of one or more of the multiple channels in a second, multi-stage, encoder. This procedure is significantly enhanced by providing a controller for adaptively allocating a number of encoding bits among the different encoding stages of the second, multi-stage, encoder in dependence on multi-channel audio signal characteristics.

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