公开(公告)号：US07941314B2

公开(公告)日：2011-05-10

申请号：US12777875

申请日：2010-05-11

申请人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

发明人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

IPC分类号： G10L19/12

CPC分类号： G10L19/10 ,  G10L19/107

摘要： A fixed codebook search method includes: initializing a counter; searching for pulses and calculating the value of a cost function Qk; initializing the counter if the Qk value increases; increasing the value of the counter if the Qk value does not increase; judging whether the value of the counter is greater than the threshold value; continuing the search process if the value of the counter is not greater than the threshold value; and ending the whole search process if the value of the counter is greater than the threshold value. The present invention reduces the search count and improves the search efficiency.

摘要翻译： 固定码本搜索方法包括：初始化计数器; 搜索脉冲并计算成本函数Qk的值; 如果Qk值增加则初始化计数器; 如果Qk值不增加则增加计数器的值; 判断所述计数器的值是否大于所述阈值; 如果计数器的值不大于阈值，继续搜索过程; 如果计数器的值大于阈值，则结束整个搜索过程。 本发明减少了搜索次数，提高了搜索效率。

公开(公告)号：US20090074076A1

公开(公告)日：2009-03-19

申请号：US12273201

申请日：2008-11-18

申请人： Lixiong Li ,  Libin Guo ,  Liang Zhang ,  Dejun Zhang ,  Wehai Wu ,  Tinghong Wang

发明人： Lixiong Li ,  Libin Guo ,  Liang Zhang ,  Dejun Zhang ,  Wehai Wu ,  Tinghong Wang

IPC分类号： H04N7/12

CPC分类号： H03M7/3082 ,  G10L2019/0005 ,  H04N19/94

摘要： A method for quantizing vector. The method includes: performing a quantization process on a vector to be quantized by use of N basic codebook vectors and the adjustment vectors of each of the basic codebook vectors, generating a basic codebook vector and an adjustment vector used for quantizing the vectors to be quantized, N being a positive integer larger than or equal to 1. According to the present invention, based on the method a device for quantizing vector is disclosed. According to embodiments of the present invention, the quantization of an input vector is done by introducing the modification vectors for the base codebook vectors, therefore the memory amount of the base codebook vectors is reduced effectively, and the calculation amount is merely the calculation amount required for going through N codebooks. Therefore, the complexity of the vector quantization could be decreased effectively.

摘要翻译： 量化矢量的方法。 该方法包括：通过使用N个基本码本向量和每个基本码本向量的调整向量对要量化的矢量进行量化处理，生成用于量化要量化的矢量的基本码本矢量和调整矢量 ，N是大于或等于1的正整数。根据本发明，基于该方法，公开了一种用于量化矢量的装置。 根据本发明的实施例，通过引入用于基本码本向量的修改向量来完成输入向量的量化，因此有效地降低了基本码本矢量的存储量，并且计算量仅仅是所需的计算量 通过N个代码簿。 因此，可以有效降低矢量量化的复杂度。

公开(公告)号：US20110218800A1

公开(公告)日：2011-09-08

申请号：US13109679

申请日：2011-05-17

申请人： Dejun Zhang ,  Lei Miao ,  Jianfeng Xu ,  Fengyan Qi ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma

发明人： Dejun Zhang ,  Lei Miao ,  Jianfeng Xu ,  Fengyan Qi ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma

IPC分类号： G10L21/00

CPC分类号： G10L19/08 ,  G10L2019/0011

摘要： The present invention relates to a method and apparatus for obtaining a pitch gain, and a coder and a decoder. The method includes: obtaining information about an input signal; and obtaining a pitch gain corresponding to the information about the input signal according to the correspondence between the signal information and the pitch gain. The embodiments of the present invention obtain the corresponding pitch gain according to the signal information by using the obtained correspondence between the signal information and the pitch gain, and the pitch gain is applicable to the coder and the decoder, thus making it unnecessary for the coder to transmit the pitch gain to the decoder and solving the problem of bit overhead. The embodiments of the present invention determine the pitch gain adaptively according to the signal information, avoid consumption of extra bits for quantizing the pitch gain, avoid impact on the coding performance, and improve the compression ratio.

摘要翻译： 本发明涉及一种用于获得音调增益的方法和装置，以及编码器和解码器。 该方法包括：获取关于输入信号的信息; 并且根据信号信息和音调增益之间的对应关系，获得与输入信号有关的信息对应的音调增益。 本发明的实施例通过使用获得的信号信息和音调增益之间的对应关系，根据信号信息获得相应的音调增益，并且音调增益可应用于编码器和解码器，从而不需要编码器 将音调增益发送到解码器并解决位开销的问题。 本发明的实施例根据信号信息自适应地确定音调增益，避免消耗用于量化音调增益的额外比特，避免对编码性能的影响，并提高压缩比。

公开(公告)号：US20100274559A1

公开(公告)日：2010-10-28

申请号：US12838229

申请日：2010-07-16

申请人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

发明人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

IPC分类号： G10L19/12

CPC分类号： G10L19/10 ,  G10L19/107

摘要： A fixed codebook search method includes initializing a counter, searching for pulses and calculating the value of a cost function Qk, initializing the counter if the Qk value increases, increasing the value of the counter if the Qk value does not increase, judging whether the value of the counter is greater than the threshold value, continuing the search process if the value of the counter is not greater than the threshold value, and ending the whole search process if the value of the counter is greater than the threshold value.

摘要翻译： 固定码本搜索方法包括初始化计数器，搜索脉冲和计算成本函数Qk的值，如果Qk值增加则初始化计数器，如果Qk值不增加则增加计数器的值，判断该值是否为 计数器的值大于阈值，如果计数器的值不大于阈值则继续搜索处理，如果计数器的值大于阈值则结束整个搜索处理。

公开(公告)号：US20090240493A1

公开(公告)日：2009-09-24

申请号：US12477989

申请日：2009-06-04

申请人： Dejun ZHANG ,  Lixiong Li

发明人： Dejun ZHANG ,  Lixiong Li

IPC分类号： G10L19/04 ,  G10L19/12

CPC分类号： G10L19/10 ,  G10L2019/0013

摘要： A method and apparatus for searching fixed codebook are provided. The method includes: obtaining a basic codebook which comprises position information of N pulses on M tracks, wherein N and M are positive integers; choosing n pulses as search pulses, wherein the n pulses are parts of the N pulses and n is a positive integer smaller than N; and replacing position information of the n search pulses respectively with other position information on the tracks to obtain a searched codebook; executing the search process for K times, wherein K is a positive integer larger than or equal to 2, at least two or more search pulses are chosen in one of the K search processes , and the chosen search pulses vary in each of the K search processes; and obtaining an optimal codebook from the basic codebook and the searched codebook according to a preset criterion.

摘要翻译： 提供了一种用于搜索固定码本的方法和装置。 该方法包括：获得基本码本，其包括在M个磁道上的N个脉冲的位置信息，其中N和M是正整数; 选择n个脉冲作为搜索脉冲，其中n个脉冲是N个脉冲的一部分，n是小于N的正整数; 以及分别将n个搜索脉冲的位置信息替换在轨道上的其它位置信息以获得搜索到的码本; 执行K次的搜索处理，其中K是大于或等于2的正整数，在K个搜索过程之一中选择至少两个或更多个搜索脉冲，并且所选择的搜索脉冲在每个K搜索中变化 过程; 并根据预设标准从基本码本和搜索到的码本获取最佳码本。

公开(公告)号：US08515743B2

公开(公告)日：2013-08-20

申请号：US12477989

申请日：2009-06-04

申请人： Dejun Zhang ,  Lixiong Li

发明人： Dejun Zhang ,  Lixiong Li

IPC分类号： G10L19/04 ,  G10L19/12

CPC分类号： G10L19/10 ,  G10L2019/0013

摘要： A method and apparatus for searching fixed codebook are provided. The method includes: obtaining a basic codebook which comprises position information of N pulses on M tracks, wherein N and M are positive integers; choosing n pulses as search pulses, wherein the n pulses are parts of the N pulses and n is a positive integer smaller than N; and replacing position information of the n search pulses respectively with other position information on the tracks to obtain a searched codebook; executing the search process for K times, wherein K is a positive integer larger than or equal to 2, at least two or more search pulses are chosen in one of the K search processes , and the chosen search pulses vary in each of the K search processes; and obtaining an optimal codebook from the basic codebook and the searched codebook according to a preset criterion.

摘要翻译： 提供了一种用于搜索固定码本的方法和装置。 该方法包括：获得基本码本，其包括在M个磁道上的N个脉冲的位置信息，其中N和M是正整数; 选择n个脉冲作为搜索脉冲，其中n个脉冲是N个脉冲的一部分，n是小于N的正整数; 以及分别将n个搜索脉冲的位置信息替换为轨道上的其他位置信息以获得搜索到的码本; 执行K次的搜索处理，其中K是大于或等于2的正整数，在K个搜索过程之一中选择至少两个或更多个搜索脉冲，并且所选择的搜索脉冲在每个K搜索中变化 过程; 并根据预设标准从基本码本和搜索到的码本获取最佳码本。

公开(公告)号：US20100169084A1

公开(公告)日：2010-07-01

申请号：US12646669

申请日：2009-12-23

申请人： Dejun Zhang ,  Jianfeng Xu ,  Lei Miao ,  Fengyan Qi ,  Qing Zhang ,  Herve Marcel Taddei ,  Lixiong Li ,  Fuwei Ma ,  Yang Gao

发明人： Dejun Zhang ,  Jianfeng Xu ,  Lei Miao ,  Fengyan Qi ,  Qing Zhang ,  Herve Marcel Taddei ,  Lixiong Li ,  Fuwei Ma ,  Yang Gao

IPC分类号： G10L11/04

CPC分类号： G10L25/90 ,  G10L19/09 ,  G10L25/06

摘要： The present invention relates to a method and apparatus for pitch search. One method includes: obtaining a characteristic function value of a residual signal, where the residual signal is a result of removing a Long-Term Prediction (LTP) contribution signal from input speech signals; and obtaining a pitch according to the characteristic function value of the residual signal.

摘要翻译： 本发明涉及一种用于音高搜索的方法和装置。 一种方法包括：获得残差信号的特征函数值，其中残留信号是从输入语音信号中去除长期预测（LTP）贡献信号的结果; 并根据残差信号的特征函数值获得音高。

公开(公告)号：US07908136B2

公开(公告)日：2011-03-15

申请号：US12838229

申请日：2010-07-16

申请人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

发明人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

IPC分类号： G10L19/12

CPC分类号： G10L19/10 ,  G10L19/107

摘要： A fixed codebook search method includes initializing a counter, searching for pulses and calculating the value of a cost function Qk, initializing the counter if the Qk value increases, increasing the value of the counter if the Qk value does not increase, judging whether the value of the counter is greater than the threshold value, continuing the search process if the value of the counter is not greater than the threshold value, and ending the whole search process if the value of the counter is greater than the threshold value.

摘要翻译： 固定码本搜索方法包括初始化计数器，搜索脉冲和计算成本函数Qk的值，如果Qk值增加则初始化计数器，如果Qk值不增加则增加计数器的值，判断该值是否为 计数器的值大于阈值，如果计数器的值不大于阈值则继续搜索处理，如果计数器的值大于阈值则结束整个搜索处理。

公开(公告)号：US20100235173A1

公开(公告)日：2010-09-16

申请号：US12777875

申请日：2010-05-11

申请人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

发明人： Dejun Zhang ,  Liang Zhang ,  Lixiong Li ,  Tinghong Wang ,  Yue Lang ,  Wenhai Wu

IPC分类号： G10L19/00

CPC分类号： G10L19/10 ,  G10L19/107

摘要： A fixed codebook search method includes: initializing a counter; searching for pulses and calculating the value of a cost function Qk; initializing the counter if the Qk value increases; increasing the value of the counter if the Qk value does not increase; judging whether the value of the counter is greater than the threshold value; continuing the search process if the value of the counter is not greater than the threshold value; and ending the whole search process if the value of the counter is greater than the threshold value. The present invention reduces the search count and improves the search efficiency.

摘要翻译： 固定码本搜索方法包括：初始化计数器; 搜索脉冲并计算成本函数Qk的值; 如果Qk值增加则初始化计数器; 如果Qk值不增加则增加计数器的值; 判断所述计数器的值是否大于所述阈值; 如果计数器的值不大于阈值，继续搜索过程; 如果计数器的值大于阈值，则结束整个搜索过程。 本发明减少了搜索次数，提高了搜索效率。

公开(公告)号：US08843366B2

公开(公告)日：2014-09-23

申请号：US12982142

申请日：2010-12-30

申请人： Dejun Zhang ,  Fengyan Qi ,  Lei Miao ,  Jianfeng Xu ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma

发明人： Dejun Zhang ,  Fengyan Qi ,  Lei Miao ,  Jianfeng Xu ,  Qing Zhang ,  Lixiong Li ,  Fuwei Ma

IPC分类号： G10L19/00 ,  G10L19/04 ,  G10L19/005

CPC分类号： G10L19/04 ,  G10L19/005 ,  G10L19/09

摘要： A framing method and apparatus are disclosed to overcome inconsistency of gains between sub-frames caused by simple average framing in the prior art. The method includes: obtaining the Linear Prediction Coding (LPC) order and the pitch of the signal; removing the samples inapplicable to Long-Term Prediction (LTP) synthesis according to the LPC prediction order and the pitch; and splitting the remaining samples of the signal into several sub-frames. The technical solution under the present invention is applicable to the multimedia speech coding field.

摘要翻译： 公开了一种框架方法和装置，以克服由现有技术中的简单平均框架引起的子帧之间的增益不一致。 该方法包括：获得线性预测编码（LPC）顺序和信号的音调; 根据LPC预测顺序和间距，去除不适用于长期预测（LTP）合成的样本; 并将该信号的剩余采样分成几个子帧。 本发明的技术方案适用于多媒体语音编码领域。