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6 条记录 (耗时 0.006 秒)

    LOW COMPLEXITY TARGET VECTOR IDENTIFICATION
    1.
    发明公开
    LOW COMPLEXITY TARGET VECTOR IDENTIFICATION 审中-公开
    集中的目标矢量低复杂度的识别

    公开(公告)号：EP2643833A4

    公开(公告)日：2014-06-04

    申请号：EP10860073

    申请日：2010-11-26

    申请人： NOKIA CORP

    发明人： VASILACHE ADRIANA ,  LAAKSONEN LASSE JUHANI ,  RÄMÖ ANSSI SAKARI ,  TAMMI MIKKO TAPIO

    IPC分类号： G10L19/02 ,  G06T9/00 ,  G10L19/038 ,  H03M7/30

    CPC分类号： G10L19/0019 ,  G10L19/038 ,  H03M7/3082

    摘要： It is inter alia disclosed to identify one or more target vectors from a plurality of candidate vectors, each candidate vector having sorted elements and being associated with a respective class of one or more code vectors of a codebook and at least one of the candidate vectors being associated with a respective class of two or more code vectors that comprise the respective candidate vector and at least one code vector obtainable from the respective candidate vector by one of permutation and signed permutation, the target vectors having, among all candidate vectors of the plurality of candidate vectors, smallest distances towards a at least sorted representation of an input vector. The identifying comprises checking, for a candidate vector of the plurality of candidate vectors, at least based on a distance between the candidate vector and a reference vector and on a distance between the reference vector and the at least sorted representation of the input vector, if a distance between the at least sorted representation of the input vector and the candidate vector is larger than a distance between the at least sorted representation of the input vector and the reference vector. The identifying further comprises computing, for the candidate vector, the distance between the at least sorted representation of the input vector and the candidate vector only if the checking yields a negative result.

    HIGH-QUALITY ENCODING AT LOW-BIT RATES
    5.
    发明公开
    HIGH-QUALITY ENCODING AT LOW-BIT RATES 审中-公开
    在低比特率质量代码

    公开(公告)号：EP2297855A4

    公开(公告)日：2013-12-11

    申请号：EP09761846

    申请日：2009-05-15

    申请人： NOKIA CORP

    发明人： TABUS IOAN ,  VASILACHE ADRIANA

    IPC分类号： H03M7/30 ,  G10L19/00

    CPC分类号： G10L19/00 ,  H03M7/30 ,  H03M7/4075 ,  H03M13/1505 ,  H03M13/6312

    摘要： Methods and devices provide improved perceived quality of an audio (or other) coded signal at a low bit-rate. An input signal may be split into an outlier portion and a stationary portion. The outlier portion of the input signal may be encoded. The stationary portion may be divided into subvectors. Each subvector may be classified as trivial or non-trivial. Each trivial subvector may be encoded using a pre-defined pattern. Each non-trivial subvector may be encoded with at least one location of at least one significant sample and a sign of the significant sample.

    METHOD AND APPARATUS FOR FAST NEARESTNEIGHBOR SEARCH FOR VECTOR QUANTIZERS
    6.
    发明公开
    METHOD AND APPARATUS FOR FAST NEARESTNEIGHBOR SEARCH FOR VECTOR QUANTIZERS 有权
    方法和设备，用于VENTORQUANTISIERER THE NEXT邻居快速搜索

    公开(公告)号：EP2304722A4

    公开(公告)日：2011-11-30

    申请号：EP09797545

    申请日：2009-07-02

    申请人： NOKIA CORP

    发明人： VASILACHE ADRIANA ,  LAAKSONEN LASSE ,  TAMMI MIKKO ,  RAEMOE ANSSI

    IPC分类号： G10L19/02 ,  G06T9/00

    CPC分类号： G10L19/00 ,  H03M7/3082 ,  H04B1/7075

    摘要： A method comprises identifying a component k of a codevector from a codebook C having one or more codevectors, the component k introducing highest variance for an input vector; allowing ordering of codevectors in the codebook C; and searching for a best match vector for the input vector using ordered codevectors.

    摘要翻译： 一种方法包括从一个码书C具有一个或多个码矢量的分量k的输入矢量引入最高方差用于识别码矢量的分量k; 允许所述码书C的码矢量进行排序; 和搜索最佳匹配矢量，使用有序代码矢量对输入向量。