Method and apparatus to search fixed codebook using tracks of a trellis structure with each track being a union of tracks of an algebraic codebook
    1.
    发明授权
    Method and apparatus to search fixed codebook using tracks of a trellis structure with each track being a union of tracks of an algebraic codebook 有权
    使用网格结构的轨道来搜索固定码本的方法和装置,每个轨道是代数码本的轨道的并集

    公开(公告)号:US08805681B2

    公开(公告)日:2014-08-12

    申请号:US14020139

    申请日:2013-09-06

    IPC分类号: G10L21/00 G10L19/12 G10L19/02

    摘要: A method and apparatus to search a codebook including pulses that model a predetermined component of a speech signal. The method includes the operations of selecting a predetermined number of paths corresponding to a predetermined number of pulse locations that are most consistent with the predetermined component, from among paths corresponding to pulse locations of a predetermined pulse location set allocated to at least one branch that connects one state of a predetermined Trellis structure to another state, performing the path selecting operation on each of states other than the one state, and selecting a path corresponding to pulse locations that are most consistent with the predetermined component, from among paths including the selected paths, wherein each path corresponds to a union of plural tracks of an Algebraic codebook. Accordingly, the number of calculations required during a codebook search is reduced.

    摘要翻译: 一种搜索包括对语音信号的预定分量进行建模的脉冲的码本的方法和装置。 该方法包括从对应于分配给连接至少一个分支的预定脉冲位置集的脉冲位置的路径中选择对应于与预定分量最一致的预定数量的脉冲位置的预定数量的路径的操作 将预定网格结构的一个状态转换到另一状态,对除了一个状态以外的状态执行路径选择操作,并且从包括所选择的路径的路径中选择对应于与预定分量最一致的脉冲位置的路径 ,其中每个路径对应于代数码本的多个轨道的并集。 因此,减少码本搜索期间所需的计算次数。

    Coding method, encoder, and computer readable medium that uses one of multiple codebooks based on a type of input signal
    2.
    发明授权
    Coding method, encoder, and computer readable medium that uses one of multiple codebooks based on a type of input signal 有权
    编码方法,编码器和计算机可读介质,其基于输入信号的类型使用多个码本之一

    公开(公告)号:US08600739B2

    公开(公告)日:2013-12-03

    申请号:US12481060

    申请日:2009-06-09

    IPC分类号: G10L19/24

    CPC分类号: G10L19/24 G10L2019/0013

    摘要: A coding method is adapted to select different codebook search algorithms according to varied types of input signals. An encoder using the coding method is also provided. As appropriate search algorithms may be selected according to all possible structural features of the input signals, certain types of signals for which satisfactory results may be obtained through simple computations may match with search algorithms suitable for these signal types and having low computation complexities, so as to achieve better performance with fewer system resources. Meanwhile, other types of signals that need complicated computations may be processed by more sophisticated search algorithms, thereby ensuring the coding quality.

    摘要翻译: 一种编码方法适用于根据不同类型的输入信号选择不同的码本搜索算法。 还提供了使用编码方法的编码器。 可以根据输入信号的所有可能的结构特征来选择合适的搜索算法,通过简单的计算可​​获得令人满意的结果的某些类型的信号可以与适合于这些信号类型的搜索算法匹配并具有低的计算复杂度,因此 以更少的系统资源实现更好的性能。 同时,需要复杂计算的其他类型的信号可以通过更复杂的搜索算法来处理,从而确保编码质量。

    METHOD AND APPARATUS FOR ENCODING A SPEECH SIGNAL
    3.
    发明申请
    METHOD AND APPARATUS FOR ENCODING A SPEECH SIGNAL 有权
    编码语音信号的方法和装置

    公开(公告)号:US20120245930A1

    公开(公告)日:2012-09-27

    申请号:US13514613

    申请日:2010-12-10

    IPC分类号: G10L19/00

    摘要: According to the present invention, a linear prediction filter coefficient of a current frame is acquired from an input signal using linear prediction, a quantized spectrum candidate vector of the current frame, corresponding to the linear prediction filter coefficient of the current frame, is acquired on the basis of first best information, and the quantized spectrum candidate vector of the current frame and the quantized spectrum vector of the previous frame are interpolated. Accordingly, in contrast to conventional phased optimization techniques, optimum parameters which minimize quantization errors, can be obtained.

    摘要翻译: 根据本发明,从使用线性预测的输入信号中获取当前帧的线性预测滤波器系数,与当前帧的线性预测滤波器系数对应的当前帧的量化频谱候选向量被获取在 内插第一最佳信息的基础和当前帧的量化频谱候选矢量和前一帧的量化频谱矢量。 因此,与传统的相位优化技术相反,可以获得最小化量化误差的最佳参数。

    METHOD FOR MANUFACTURING A SEMICONDUCTOR PACKAGE
    4.
    发明申请
    METHOD FOR MANUFACTURING A SEMICONDUCTOR PACKAGE 有权
    制造半导体封装的方法

    公开(公告)号:US20100211386A1

    公开(公告)日:2010-08-19

    申请号:US12767271

    申请日:2010-04-26

    IPC分类号: G10L19/12

    CPC分类号: G10L19/032 G10L2019/0013

    摘要: The present research can decrease the amount of computation and enhance speech quality by using a global pulse replacement method in a fixed codebook search. The fixed codebook search method in a speech encoder based upon global pulse replacement, includes the steps of: (a) computing absolute values of the pulse-position likelihood-estimator vectors; (b) temporarily obtaining a codebook vector; (c) computing a mathematical equation by replacing a pulse; (d) determining whether a value computed based upon the mathematical equation is increased after pulse replacement; (e) obtaining a new codebook vector by replacing the pulse; and (f) maintaining a previous codebook vector.

    摘要翻译: 本研究可以通过在固定码本搜索中使用全局脉冲替换方法来减少计算量并提高语音质量。 基于全局脉冲替换的语音编码器中的固定码本搜索方法包括以下步骤:(a)计算脉冲位置似然估计器矢量的绝对值; (b)暂时获得码本矢量; (c)通过替换脉冲来计算数学方程; (d)确定在脉冲置换之后基于数学方程计算的值是否增加; (e)通过替换脉冲获得新的码本矢量; 和(f)保持先前的码本向量。

    Method for searching fixed codebook based upon global pulse replacement
    5.
    发明授权
    Method for searching fixed codebook based upon global pulse replacement 有权
    基于全局脉冲替换检索固定码本的方法

    公开(公告)号:US07739108B2

    公开(公告)日:2010-06-15

    申请号:US10740310

    申请日:2003-12-17

    IPC分类号: G10L19/00 G10L19/12 H04L12/66

    CPC分类号: G10L19/032 G10L2019/0013

    摘要: The present research can decrease the amount of computation and enhance speech quality by using a global pulse replacement method in a fixed codebook search. The fixed codebook search method in a speech encoder based upon global pulse replacement, includes the steps of: (a) computing absolute values of the pulse-position likelihood-estimator vectors; (b) temporarily obtaining a codebook vector; (c) computing a mathematical equation by replacing a pulse; (d) determining whether a value computed based upon the mathematical equation is increased after pulse replacement; (e) obtaining a new codebook vector by replacing the pulse; and (f) maintaining a previous codebook vector.

    摘要翻译: 本研究可以通过在固定码本搜索中使用全局脉冲替换方法来减少计算量并提高语音质量。 基于全局脉冲替换的语音编码器中的固定码本搜索方法包括以下步骤:(a)计算脉冲位置似然估计器矢量的绝对值; (b)暂时获得码本矢量; (c)通过替换脉冲来计算数学方程; (d)确定在脉冲置换之后基于数学方程计算的值是否增加; (e)通过替换脉冲获得新的码本矢量; 和(f)保持先前的码本向量。

    Robust composite quantization with sub-quantizers and inverse sub-quantizers using illegal space
    7.
    发明授权
    Robust composite quantization with sub-quantizers and inverse sub-quantizers using illegal space 有权
    使用子量化器和使用非法空间的逆子量化器的鲁棒复合量化

    公开(公告)号:US07647223B2

    公开(公告)日:2010-01-12

    申请号:US10163995

    申请日:2002-06-07

    申请人: Jes Thyssen

    发明人: Jes Thyssen

    IPC分类号: G10L19/00

    摘要: A sub-quantizer for sub-quantization of a vector includes a sub-codevector generator that generates a set of candidate sub-codevectors, and transformation logic that transforms each candidate sub-codevector into a corresponding codevector. A memory stores an illegal space definition representing illegal vectors. A legal status tester determines legal codevectors among the codevectors based on the illegal space definition. An error calculator generates error terms corresponding to the candidate sub-codevector, and a sub-codevector selector determines a best one of the sub-codevectors corresponding to a legal codevector and a best error term. The vector includes parameters relating to a speech and/or audio signal, such as Line Spectral Frequencies (LSFs).

    摘要翻译: 用于矢量的子量化的子量化器包括生成一组候选子码矢量的子码矢量生成器和将每个候选子码矢量变换成相应的码矢量的变换逻辑。 存储器存储表示非法向量的非法空间定义。 法定状态测试人员根据非法空间定义确定代码浏览器中的合法代码。 误差计算器生成对应于候选子码矢量的误差项,并且子码矢量选择器确定对应于合法码矢量和最佳误差项的最佳一个子码矢量。 矢量包括与语音和/或音频信号相关的参数,例如线谱频率(LSF)。

    Code excited linear prediction speech decoder and method thereof
    8.
    发明授权
    Code excited linear prediction speech decoder and method thereof 有权
    码激励线性预测语音解码器及其方法

    公开(公告)号:US07398205B2

    公开(公告)日:2008-07-08

    申请号:US11421932

    申请日:2006-06-02

    IPC分类号: G10L19/12

    摘要: An excitation vector generator includes an input vector providing system that is capable of providing an input vector having at least one pulse, each pulse having a predetermined position and a respective polarity. A fixed waveform storage system is capable of storing at least one fixed waveform. An arranging system is capable of arranging the at least one fixed waveform in accordance with the position and the polarity of the at least one pulse.

    摘要翻译: 激励矢量发生器包括输入矢量提供系统,其能够提供具有至少一个脉冲的输入矢量,每个脉冲具有预定位置和相应的极性。 固定波形存储系统能够存储至少一个固定波形。 排列系统能够根据至少一个脉冲的位置和极性排列至少一个固定波形。

    Apparatus and method for coding excitation signal
    9.
    发明授权
    Apparatus and method for coding excitation signal 有权
    用于编码激励信号的装置和方法

    公开(公告)号:US07373298B2

    公开(公告)日:2008-05-13

    申请号:US10923694

    申请日:2004-08-24

    申请人: Hiroyuki Ehara

    发明人: Hiroyuki Ehara

    IPC分类号: G10L15/20

    摘要: An excitation signal coding apparatus capable of improving an error resilience by changing an excitation vector search method (more specifically, an error minimization criterion during a search). This coding apparatus is allowed to choose either of an ordinary search method and the search method of the present invention with using information input from a transmission channel condition monitoring section (215). That is, an ordinary search method is used when the transmission channel condition is good and no packet discarding is observed on the receiving side, and the search method of the present invention is used otherwise (when packet discarding is observed on the receiving side at a discarding rate of 5% or more, for example).

    摘要翻译: 一种激励信号编码装置,其能够通过改变激励矢量搜索方法(更具体地说,在搜索期间的误差最小化准则)来提高误差弹性。 允许该编码装置使用从传输信道条件监视部分(215)输入的信息来选择本发明的普通搜索方法和搜索方法。 也就是说,当传输信道条件良好并且在接收侧没有观察到分组丢弃时,使用普通搜索方法,否则使用本发明的搜索方法(当在接收侧观察到分组丢弃时 丢弃率为5%以上)。

    Modification of fixed codebook search in G.729 Annex E audio coding
    10.
    发明授权
    Modification of fixed codebook search in G.729 Annex E audio coding 有权
    固定码本搜索修改G.729附件E音频编码

    公开(公告)号:US07302387B2

    公开(公告)日:2007-11-27

    申请号:US10160122

    申请日:2002-06-04

    IPC分类号: G10L10/12

    CPC分类号: G10L19/12 G10L2019/0013

    摘要: ITU Recommendation G.729 Annex E teaches in the implementation of a fixed codebook search to determine the selected sample combination providing the minimal difference between the original input speech and the reconstructed speech after implementation of the codec. A large number of sample sets are processed and the difference between the original input signal and the reconstructed signal for each set is determined and stored in a register. Under certain conditions, the register can overflow resulting in invalid difference values. When such a condition occurs, the fixed codebook search cannot determine the sample combination providing the minimal mean square error between the weighted input speech and the weighted reconstructed speech. An initialization vector for the codvec vector is used to provide valid data which conforms to the G.729 Annex E specifications and minimizes changes to the G.729 source code while providing robust quality signal processing in the event of register overflow condition.

    摘要翻译: 国际电联ITU G.729建议书附件E教导了固定码本搜索的实现,以确定在实现编解码器之后提供原始输入语音与重构语音之间的最小差异的所选样本组合。 处理大量样本集,并且确定每个组的原始输入信号和重构信号之间的差并将其存储在寄存器中。 在某些情况下,寄存器可能溢出,导致无效的差值。 当出现这种情况时,固定码本搜索不能确定提供加权输入语音和加权重构语音之间的最小均方误差的样本组合。 用于编码矢量的初始化向量用于提供符合G.729附录E规范的有效数据,并最大限度地减少G.729源代码的改变,同时在寄存器溢出情况下提供稳健的质量信号处理。