Adaptive sound source vector quantization device, adaptive sound source vector inverse quantization device, and method thereof
    1.
    发明授权
    Adaptive sound source vector quantization device, adaptive sound source vector inverse quantization device, and method thereof 有权
    自适应声源矢量量化装置,自适应声源矢量逆量化装置及其方法

    公开(公告)号:US08200483B2

    公开(公告)日:2012-06-12

    申请号:US12518944

    申请日:2007-12-14

    IPC分类号: G10L19/12

    CPC分类号: G10L19/12 G10L19/038

    摘要: Disclosed is an adaptive excitation vector quantization device capable of improving quantization accuracy of adaptive excitation vector quantization while suppressing increase of the calculation amount in CELP encoding which performs encoding in sub-frame units. An adaptive excitation vector generator cuts out an adaptive excitation vector of a frame length (n) from an adaptive excitation codebook. An impulse response matrix former forms a n×n impulse response matrix using impulse response matrixes of sub-frames inputted from a synthesis filter. A target vector generator adds a linear prediction residual vector of each sub-frame to form a target vector of frame length (n). An evaluation measure calculator calculates an evaluation measure of the adaptive excitation vector quantization by using the adaptive excitation vector, the impulse response matrix, and the target vector.

    摘要翻译: 公开了一种能够提高自适应激励矢量量化的量化精度的自适应激励矢量量化装置,同时抑制以子帧为单位执行编码的CELP编码中的计算量的增加。 自适应激励矢量发生器从自适应激励码本切出帧长度(n)的自适应激励矢量。 脉冲响应矩阵形成器使用从合成滤波器输入的子帧的脉冲响应矩阵形成n×n脉冲响应矩阵。 目标矢量生成器将每个子帧的线性预测残差矢量相加,形成帧长度(n)的目标矢量。 评估测量计算器通过使用自适应激励矢量,脉冲响应矩阵和目标矢量来计算自适应激励矢量量化的评估量度。

    LSP VECTOR QUANTIZATION APPARATUS, LSP VECTOR INVERSE-QUANTIZATION APPARATUS, AND THEIR METHODS
    2.
    发明申请
    LSP VECTOR QUANTIZATION APPARATUS, LSP VECTOR INVERSE-QUANTIZATION APPARATUS, AND THEIR METHODS 审中-公开
    LSP矢量量化装置,LSP矢量反相量化装置及其方法

    公开(公告)号:US20090198491A1

    公开(公告)日:2009-08-06

    申请号:US12300225

    申请日:2007-05-11

    IPC分类号: G10L19/06

    CPC分类号: H03M7/3082 G10L19/07

    摘要: Disclosed is an LPC vector quantization device capable of quantizing an LSP vector by using correlation between divided vectors. The device includes: a vector dividing unit (101) for dividing an inputted LSP vector into a first divided vector and a second divided vector; a first quantization unit (102) for quantizing the first divided vector by using a first codebook formed by a plurality of first code vectors to generate a first code; a prediction vector selection unit (103) for predicting a second divided vector from the first code by using a prediction codebook formed by a plurality of prediction code vectors to create a prediction vector; a prediction residual generation unit (104) for obtaining a residual between the prediction vector and the second divided vector to create a prediction residual vector; a second quantization unit (105) for quantizing the prediction residual vector by using a second codebook formed by a plurality of second code vectors to create a second code; and a multiplexing unit (106) for generating a quantization vector code by multiplexing the first code and the second code.

    摘要翻译: 公开了一种LPC矢量量化装置,其能够通过使用分割矢量之间的相关来量化LSP矢量。 该装置包括:矢量分割单元,用于将输入的LSP矢量划分为第一分割矢量和第二分割矢量; 第一量化单元(102),用于通过使用由多个第一码矢量形成的第一码本来量化第一划分矢量以产生第一码; 预测矢量选择单元,用于通过使用由多个预测码矢量形成的预测码本来从第一码预测第二划分矢量以产生预测矢量; 预测残差生成单元,用于获得所述预测矢量和所述第二分割矢量之间的残差,以产生预测残差矢量; 第二量化单元(105),用于通过使用由多个第二代码矢量形成的第二代码簿来量化所述预测残差矢量以产生第二代码; 以及用于通过多路复用第一代码和第二代码来生成量化矢量代码的复用单元(106)。

    Audio/Music Decoding Device and Audiomusic Decoding Method
    3.
    发明申请
    Audio/Music Decoding Device and Audiomusic Decoding Method 有权
    音频/音乐解码设备和Audiomusic解码方法

    公开(公告)号:US20070271101A1

    公开(公告)日:2007-11-22

    申请号:US11569377

    申请日:2005-05-13

    IPC分类号: G10L13/06

    CPC分类号: G10L19/005 G10L19/24

    摘要: An audio/music decoding device capable of improving quality of a decoded signal generated by conceal processing of a frame erase using a scalable encoding method. The audio/music decoding device includes a frame loss detector that determines whether encoded information is normally received and generates frame loss information indicating the result of the determination. According to the frame loss information, a first decoder performs decoding by using at least one of the following encoded information: the first encoded information on the frame immediately before, the first encoded information on the current frame, and the second encoded information on the current frame. According to the frame loss information, a second decoder performs decoding by using at least one of the following encoded information: the first encoded information on the frame immediately before, the first encoded information on the current frame, the second encoded information on the frame immediately before, and the second encoded information on the current frame. An adder adds the decoded signal outputted from the first decoder and the decoded signal outputted from the second decoder.

    摘要翻译: 一种音频/音乐解码装置,其能够使用可伸缩编码方法来提高通过隐藏处理帧擦除而产生的解码信号的质量。 音频/音乐解码装置包括帧丢失检测器,其确定编码信息是否被正常接收,并产生指示确定结果的帧丢失信息。 根据帧丢失信息,第一解码器通过使用以下编码信息中的至少一个来执行解码:紧接着的帧上的第一编码信息,当前帧上的第一编码信息和关于当前帧的第二编码信息 帧。 根据帧丢失信息,第二解码器通过使用以下编码信息中的至少一个来执行解码:紧接着的帧上的第一编码信息,当前帧上的第一编码信息,帧上的第二编码信息 之前,以及当前帧上的第二编码信息。 加法器将从第一解码器输出的解码信号和从第二解码器输出的解码信号相加。

    Adaptive audio signal source vector quantization device and adaptive audio signal source vector quantization method that search for pitch period based on variable resolution
    4.
    发明授权
    Adaptive audio signal source vector quantization device and adaptive audio signal source vector quantization method that search for pitch period based on variable resolution 有权
    自适应音频信号源矢量量化装置和自适应音频信号源矢量量化方法,基于可变分辨率搜索音调周期

    公开(公告)号:US08521519B2

    公开(公告)日:2013-08-27

    申请号:US12528661

    申请日:2008-02-29

    IPC分类号: G10L11/04

    摘要: An adaptive sound source vector quantization device includes a first pitch cycle instructor, a search range calculator, and a second pitch cycle instructor. The first pitch cycle instructor successively instructs pitch cycle search candidates in a predetermined search range having a search resolution which transits over a predetermined pitch cycle candidate for the first sub-frame. The search range calculator calculates a predetermined range before and after the pitch cycle of the first sub-frame as the pitch cycle search range for the second sub-frame, if the predetermined range includes the predetermined pitch cycle search candidate. In the predetermined range, the search resolution transits over a boundary defined by the predetermined pitch cycle. The second pitch cycle instructor successively instructs the pitch cycle search candidates in the search range for the second sub-frame.

    摘要翻译: 自适应声源矢量量化装置包括第一音调周期指导器,搜索范围计算器和第二音调周期指导器。 第一音调循环指导器在具有在第一子帧的预定音调周期候选中转移的搜索分辨率的预定搜索范围内连续地指示音调周期搜索候选。 如果预定范围包括预定的音调周期搜索候选,则搜索范围计算器计算第一子帧的音调周期之前和之后的预定范围作为第二子帧的音调周期搜索范围。 在预定范围内,搜索分辨率在由预定音调周期限定的边界上转移。 第二音调周期指导者在第二子帧的搜索范围内连续地指示音调周期搜索候选。

    Coding device and coding method with high layer coding based on lower layer coding results
    5.
    发明授权
    Coding device and coding method with high layer coding based on lower layer coding results 有权
    基于较低层编码结果的编码设备和具有高层编码的编码方法

    公开(公告)号:US08306827B2

    公开(公告)日:2012-11-06

    申请号:US12282287

    申请日:2007-03-08

    IPC分类号: G10L19/12

    CPC分类号: G10L19/24

    摘要: A coding device is provided with features in which optimum coding in a higher layer is flexibly carried out based on a coding result of a lower layer and a quality audio signal in limited circumstances is served to users. In this coding device, a basic layer coding unit codes an input signal to generate a basic layer information source code and outputs a linear prediction coefficient (LPC) and a quantum LPC, which are parameters calculated at coding, to an expanded layer control unit. A basic layer decoding unit decodes the basic layer information source code. An adding unit reverses a polarity of a basic layer decoded signal, adds the same to the input signal, and calculates a difference signal. The expanded layer control unit generates expanded layer mode information indicative of a coding mode in an expanded layer based on the LPC and the quantum LPC. An expanded layer coding unit codes the difference signal obtained from the adding unit under control of the expanded layer control unit.

    摘要翻译: 编码装置具有这样的特征,其中基于较低层的编码结果灵活地执行较高层中的最佳编码,并且在有限的情况下向用户提供质量音频信号。 在该编码装置中,基本层编码单元对输入信号进行编码以生成基本层信息源代码,并将作为编码计算出的参数的线性预测系数(LPC)和量子LPC输出到扩展层控制单元。 基本层解码单元解码基本层信息源代码。 加法单元反转基本层解码信号的极性,将其相加于输入信号,并计算差分信号。 扩展层控制单元基于LPC和量子LPC生成表示扩展层中的编码模式的扩展层模式信息。 扩展层编码单元在扩展层控制单元的控制下对从加法单元获得的差分信号进行编码。

    Audio encoding device, audio decoding device, and method thereof
    6.
    发明授权
    Audio encoding device, audio decoding device, and method thereof 有权
    音频编码装置,音频解码装置及其方法

    公开(公告)号:US07840402B2

    公开(公告)日:2010-11-23

    申请号:US11630380

    申请日:2005-06-16

    IPC分类号: G10L19/00

    CPC分类号: G10L19/24 G10L19/12

    摘要: There is disclosed an audio encoding device capable of realizing effective encoding while using audio encoding of the CELP method in an extended layer when hierarchically encoding an audio signal. In this device, a first encoding section (115) subjects an input signal (S11) to audio encoding processing of the CELP method and outputs the obtained first encoded information (S12) to a parameter decoding section (120). The parameter decoding section (120) acquires a first quantization LSP code (L1), a first adaptive excitation lag code (A1), and the like from the first encoded information (S12), obtains a first parameter group (S13) from these codes, and outputs it to a second encoding section (130). The second encoding section (130) subjects the input signal (S11) to a second encoding processing by using the first parameter group (S13) and obtains second encoded information (S14). A multiplexing section (154) multiplexes the first encoded information (S12) with the second encoded information (S14) and outputs them via a transmission path N to a decoding apparatus (150).

    摘要翻译: 公开了一种音频编码装置,当对音频信号进行分层编码时,能够在扩展层中使用CELP方法的音频编码实现有效的编码。 在该装置中,第一编码部(115)使输入信号(S11)进行CELP方式的音频编码处理,并将得到的第一编码信息(S12)输出到参数解码部(120)。 参数解码部(120)从第一编码信息(S12)获取第一量化LSP码(L1),第一自适应激励滞后码(A1)等,从这些码中获得第一参数组(S13) ,并将其输出到第二编码部(130)。 第二编码部(130)通过使用第一参数组(S13)对输入信号(S11)进行第二编码处理,并获得第二编码信息(S14)。 复用部(154)将第一编码信息(S12)与第二编码信息(S14)进行复用,并经由传输路径N将其输出到解码装置(150)。

    VECTOR QUANTIZER, VECTOR INVERSE QUANTIZER, AND METHODS THEREFOR
    7.
    发明申请
    VECTOR QUANTIZER, VECTOR INVERSE QUANTIZER, AND METHODS THEREFOR 审中-公开
    矢量量器,矢量反相量子及其方法

    公开(公告)号:US20100274556A1

    公开(公告)日:2010-10-28

    申请号:US12810049

    申请日:2009-01-15

    IPC分类号: G10L19/00

    CPC分类号: G10L19/038 G10L2019/0005

    摘要: Disclosed is a vector quantizer in which, in multistage vector quantization, the vector quantization of the following stage can be performed adaptively to the result of the vector quantization of the preceding stage to improve the accuracy of the quantization at less calculation amount and bit rate. The quantizer comprises a product set circle calculating section (108) for calculating a product set circle indicating a product set of a cluster circle of a first code vector selected as the result of the quantization of a first stage from a first codebook (101) and a cluster circle of a second code vector selected as the result of the quantization of a second stage from a second codebook (105), and an adjusting section (109) for adjusting an quantization error of the second stage or a third codebook so that a cluster circle of the third codebook indicating a set of all vectors represented by all vectors of the third codebook is consistent with the product set circle calculated by the product set circle calculating section (108).

    摘要翻译: 公开了一种矢量量化器,其中,在多级矢量量化中,可以自适应地执行后级的矢量量化,以前一级的矢量量化的结果,以较少的计算量和比特率提高量化的精度。 量化器包括产品集合圆计算部分(108),用于计算指示从第一码本(101)作为第一级量化的结果选择的第一代码矢量的集群圈的乘积集的乘积集合,以及 作为从第二码本(105)量化第二级的结果选择的第二码矢量的簇圈,以及用于调整第二级或第三码本的量化误差的调整部(109),使得 指示由第三码本的所有向量表示的所有矢量的集合的第三码本的簇圈与由乘积集合圆计算部(108)计算出的乘积集合圆一致。

    ADAPTIVE SOUND SOURCE VECTOR QUANTIZATION DEVICE, ADAPTIVE SOUND SOURCE VECTOR INVERSE QUANTIZATION DEVICE, AND METHOD THEREOF
    8.
    发明申请
    ADAPTIVE SOUND SOURCE VECTOR QUANTIZATION DEVICE, ADAPTIVE SOUND SOURCE VECTOR INVERSE QUANTIZATION DEVICE, AND METHOD THEREOF 有权
    自适应声源矢量量化装置,自适应声源矢量反相量化装置及其方法

    公开(公告)号:US20100082337A1

    公开(公告)日:2010-04-01

    申请号:US12518944

    申请日:2007-12-14

    IPC分类号: G10L19/04

    CPC分类号: G10L19/12 G10L19/038

    摘要: Disclosed is an adaptive sound source vector quantization device capable of improving quantization accuracy of adaptive sound source vector quantization while suppressing increase of the calculation amount in CELP sound encoding which performs encoding in sub-frame unit. In the device, a search adaptive sound source vector generation unit (103) cuts out an adaptive sound source vector of a frame length (n) from an adaptive sound source codebook (102), a search impulse response matrix generation unit (105) generates a search impulse response matrix of n n by using an impulse response matrix for each of sub-frames inputted from a synthesis filter (104), a search target vector generation unit (106) adds the target vector of each sub-frame so as to generate a search target vector of frame length (n), an evaluation scale calculation unit (107); calculates the evaluation scale of the adaptive sound source vector quantization by using the search adaptive sound source vector, the search impulse response matrix, and the search target vector.

    摘要翻译: 公开了一种能够提高自适应声源矢量量化的量化精度的自适应声源矢量量化装置,同时抑制以子帧为单位执行编码的CELP声音编码中的计算量的增加。 在该装置中,搜索自适应声源矢量生成部(103)从自适应声源码本(102)切出帧长度(n)的自适应声源矢量,搜索脉冲响应矩阵生成部(105)生成 通过使用从合成滤波器(104)输入的每个子帧的脉冲响应矩阵,nn的搜索脉冲响应矩阵,搜索目标矢量生成单元(106)将每个子帧的目标矢量相加以产生 帧长度(n)的搜索目标矢量,评价比例计算单元(107); 通过使用搜索自适应声源矢量,搜索脉冲响应矩阵和搜索目标矢量来计算自适应声源矢量量化的评估量表。

    Signal decoding apparatus and signal decoding method
    9.
    发明授权
    Signal decoding apparatus and signal decoding method 有权
    信号解码装置及信号解码方法

    公开(公告)号:US07636055B2

    公开(公告)日:2009-12-22

    申请号:US12170232

    申请日:2008-07-09

    IPC分类号: H03M7/00 G01L19/12

    摘要: A signal decoding apparatus preventing substantial noise from being produced when transmission error occurs during decoding of scalable-coded information. In this signal decoding apparatus, a coded information operation section (601) performs error detection for base layer coded information, first enhancement layer coded information and second enhancement layer coded information using transmission error detection bits. A decoding operation control section (602) performs ON/OFF control of control switches (606, 607) in accordance with pattern information indicating error detection results and bit rate patterns, and controls the sampling frequencies of sampling frequency adjustment sections (608, 609). A base layer decoding section (603), first enhancement layer decoding section (604) and second enhancement layer decoding section (605) perform decoding of coded information or frame loss compensation processing, depending on error detection results and bit rates. Sampling frequency adjustment sections (608, 609) adjust the sampling frequency of the decoded signal.

    摘要翻译: 一种信号解码装置,用于在可缩放编码信息的解码期间发生传输错误时,防止产生大量噪声。 在该信号解码装置中,编码信息操作部(601)使用传输错误检测位对基层编码信息,第一增强层编码信息和第二增强层编码信息进行错误检测。 解码操作控制部分根据指示错误检测结果和比特率模式的模式信息执行控制开关(606,607)的接通/断开控制,并且控制采样频率调节部分(608,609)的采样频率, 。 基于层解码部(603),第一增强层解码部(604)和第二增强层解码单元(605),根据错误检测结果和比特率进行编码信息或帧丢失补偿处理的解码。 采样频率调整部(608,659)调整解码信号的采样频率。

    CODING DEVICE AND CODING METHOD
    10.
    发明申请
    CODING DEVICE AND CODING METHOD 有权
    编码设备和编码方法

    公开(公告)号:US20090094024A1

    公开(公告)日:2009-04-09

    申请号:US12282287

    申请日:2007-03-08

    IPC分类号: G10L19/04 G10L19/00

    CPC分类号: G10L19/24

    摘要: A coding device is provided with features in which optimum coding in a higher layer is flexibly carried out based on a coding result of a lower layer and a quality audio signal in limited circumstances is served to users. In this coding device, a basic layer coding unit codes an input signal to generate a basic layer information source code and outputs a linear prediction coefficient (LPC) and a quantum LPC, which are parameters calculated at coding, to an expanded layer control unit. A basic layer decoding unit decodes the basic layer information source code. An adding unit reverses a polarity of a basic layer decoded signal, adds the same to the input signal, and calculates a difference signal. The expanded layer control unit generates expanded layer mode information indicative of a coding mode in an expanded layer based on the LPC and the quantum LPC. An expanded layer coding unit codes the difference signal obtained from the adding unit under control of the expanded layer control unit.

    摘要翻译: 编码装置具有这样的特征,其中基于较低层的编码结果灵活地执行较高层中的最佳编码,并且在有限的情况下向用户提供质量音频信号。 在该编码装置中,基本层编码单元对输入信号进行编码以生成基本层信息源代码,并将作为编码计算出的参数的线性预测系数(LPC)和量子LPC输出到扩展层控制单元。 基本层解码单元解码基本层信息源代码。 加法单元反转基本层解码信号的极性,将其相加于输入信号,并计算差分信号。 扩展层控制单元基于LPC和量子LPC生成表示扩展层中的编码模式的扩展层模式信息。 扩展层编码单元在扩展层控制单元的控制下对从加法单元获得的差异信号进行编码。