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    Signal decoder, signal decoding method, program, and recording medium
    1.
    发明公开
    Signal decoder, signal decoding method, program, and recording medium 有权
    Signaldekoder，Signaldekodierungsverfahren，Programm und Aufzeichnungsmedium

    公开(公告)号：EP2343700A1

    公开(公告)日：2011-07-13

    申请号：EP11162523.2

    申请日：2006-07-07

    申请人： Nippon Telegraph And Telephone Corporation

    发明人： Harada, Noboru ,  Moriya, Takehiro

    IPC分类号： G10L19/00 ,  H03M7/38

    CPC分类号： G10L19/0017 ,  G10L25/12

    摘要： Disclosed are a decoding method and apparatus. The apparatus comprises an integer signal decoder (620) which is configured to decode an integer signal code included in coded data in each frame by using linear predictive decoding and outputs an integer signal; and an amplitude reverse adjusting section which is configured to make amplitude adjustment to the integer signal by using an amplitude adjustment amount contained in the coded data and to output an amplitude-reverse-adjusted signal. The integer signal decoder (620) comprises a sample buffer (6206) which holds at least as many last sample values in the previous frame as the number equal to an order P used in linear prediction. The integer signal decoder (620) further comprises an adjustment amount buffer (6205) which is configured to hold the amplitude adjustment amount of the previous frame; and an interframe correction section (6204) which is configured to correct an amplitude of at least last P sample values in the previous frame held in the sample buffer (6206) on the basis of an amplitude adjustment amount of the current frame.

    摘要翻译： 公开了一种解码方法和装置。 该装置包括整数信号解码器（620），其被配置为通过使用线性预测解码对包含在每帧中的编码数据中的整数信号码进行解码并输出整数信号; 以及幅度反向调整部，其被配置为通过使用包含在编码数据中的幅度调整量对整数信号进行幅度调整，并输出幅度反向调整信号。 整数信号解码器（620）包括采样缓冲器（6206），该样本缓冲器保持与前一帧中至少相同数量的最后采样值，其数量等于线性预测中使用的阶数P. 整数信号解码器（620）还包括调整量缓冲器（6205），其被配置为保持前一帧的幅度调整量; 以及帧结构校正部（6204），其被配置为基于当前帧的幅度调整量来校正保持在采样缓冲器（6206）中的前一帧中的至少最后P个采样值的幅度。

    Information compression-coding device, its decoding device, method thereof, program thereof and recording medium storing the program
    4.
    发明公开
    Information compression-coding device, its decoding device, method thereof, program thereof and recording medium storing the program 有权
    信息压缩编码装置，解码装置，及其方法，及其程序，和记录介质，其上存储的程序

    公开(公告)号：EP2487798A1

    公开(公告)日：2012-08-15

    申请号：EP12162402.7

    申请日：2005-12-07

    申请人： Nippon Telegraph And Telephone Corporation

    发明人： Harada, Noboru ,  Moriya, Takehiro

    IPC分类号： H03M7/40 ,  G06F5/00

    CPC分类号： H03M7/3086 ,  H03M7/3084 ,  H03M7/3088 ,  H04N19/91

    摘要： The present invention aims to improve the compression ratio of an encoding method using a dictionary for such as LZ77, LZ78 or LZW for a sample string of an audio signal or an image signal. According to the present invention, the samples are aligned from the MSB side (73), and for an N C -th (N C is the character size, for example, eight bits) character C1(i), the samples are partitioned by starting from the MSB side, and a partitioned portion less than N C is added with dummy bits "0" until the size reaches N C to form a character (74). In this processing, lower bits in the samples can be ignored, mask data M1(i) is created in which digits in the ignorable bit and dummy bits for each C1(i) are set to "0" and effective bits (digits) are set to "1" (75), C1(i) is compared with each character D(j) in a character string for an index j in the dictionary using M1(i) to check whether or not there are matches for effective digits portions in C1(i). If there are matches, C1(i) is considered to match D(j).

    摘要翻译： 本发明的目的是改善使用字典的编码方法的压缩率：诸如LZ77，LZ78或LZW用于音频信号的样本串或图像信号。 。根据本发明，将样品从MSB侧（73）对齐，并在第NC（NC是字符大小，例如，8位）的字符C1（i）中，将样品通过从开始分配 MSB侧和分配部分小于NC中加入虚比特“0”，直到大小达到NC以形成字符（74）。 在该处理中，将样品在较低位可以被忽略，M1（I）是在其中位数创建对于每个C1（i）所述可忽略位和虚设位掩码数据被设置为“0”，并且有效位（位）是 设置为“1”（75），C1（i）是与使用M1（i）至检查是否存在对于有效的数字部分比赛中在词典索引j的字符串的每个字符D（j）的比较 在C1（i）中。 如果有匹配项，C1（i）的认为是匹配D（j）的。

    Long term prediction coding and decoding method, devices thereof, program thereof, and recording medium
    5.
    发明公开
    Long term prediction coding and decoding method, devices thereof, program thereof, and recording medium 有权
    编码和解码的长期预测，设备，程序和记录介质为此

    公开(公告)号：EP2290824A1

    公开(公告)日：2011-03-02

    申请号：EP10195915.3

    申请日：2006-01-11

    申请人： Nippon Telegraph And Telephone Corporation ,  The University of Tokyo

    发明人： Moriya, Takehiro ,  Harada, Noboru ,  Kamamoto, Yutaka ,  Nishimoto, Takuya ,  Sagayama, Shigeki

    IPC分类号： H03M7/36 ,  G10L19/14 ,  H03M7/40 ,  G10L19/00

    CPC分类号： G10L19/0017 ,  G10L19/08 ,  G10L19/09

    摘要： A long-term prediction coding and decoding method and apparatus are described in which an error signal sample is obtained by subtracting from a current sample of an input sample time-series signal a multiplication result obtained by multiplying a past sample which is a predetermined time lag older than the current sample of the input sample time-series signal, by a multiplier. There are four possible methods for outputting parameters of a quantized multiplier p' and time lag τ as follows: 1) To output p' and τ once in the frame; 2) to output the quantized multiplier p' in each sub-frame; 3) to output the time lag τ in each sub-frame; 4) to output p' and τ in each sub-frame. In any of the above cases, the parameters are outputted in coded form.

    摘要翻译： 甲长期预测编码和解码方法和装置中描述了铺设在其中误差信号样本，获得通过从输入样本时间系列的当前样本中减去信号乘以一个过去样本所有这些在预定的时间所获得的相乘结果 比输入样本时间系列信号的当前样本，由乘法器旧。 存在用于量化乘数P的输出婷参数四种可能的方法“和时间滞后如下：1）为了输出P”和在帧中的长者一次; 2）输出在每个子帧的量化乘数P”; 3）输出在每个子帧的时间间隔A; 4）到输出P“和在每个子帧。 在上述任何情况下，该参数是在以编码形式输出。