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1. 发明授权

US09153245B2 Pitch detection method and apparatus 有权
标题翻译：间距检测方法和装置
公开(公告)号：US09153245B2
公开(公告)日：2015-10-06
申请号：US12798715
申请日：2010-04-09
申请人： Fengyan Qi , Dejun Zhang , Lei Miao , Jianfeng Xu , Qing Zhang , Yang Gao
发明人： Fengyan Qi , Dejun Zhang , Lei Miao , Jianfeng Xu , Qing Zhang , Yang Gao
IPC分类号： G10L25/90 , G10L19/09
CPC分类号： G10L25/90 , G10L19/09
摘要： A pitch detection method and apparatus are disclosed. The method includes: performing pitch detection on an input signal in a signal domain, and obtaining a candidate pitch; performing linear prediction (LP) on the input signal, and obtaining an LP residual signal; setting a candidate pitch range that includes the candidate pitch; searching the candidate pitch range for the LP residual signal, and obtaining a selected pitch.
摘要翻译：公开了一种俯仰检测方法和装置。该方法包括：对信号域中的输入信号执行音调检测，并获得候选音调; 对输入信号执行线性预测（LP），获得LP残差信号; 设置包括候选音调的候选音高范围; 搜索候选音调范围用于LP残差信号，并获得所选音调。

2. 发明授权

US08812307B2 Method, apparatus and system for linear prediction coding analysis 有权
标题翻译：用于线性预测编码分析的方法，装置和系统
公开(公告)号：US08812307B2
公开(公告)日：2014-08-19
申请号：US13228965
申请日：2011-09-09
申请人： Jianfeng Xu , Lei Miao , Fengyan Qi , Dejun Zhang , Qing Zhang
发明人： Jianfeng Xu , Lei Miao , Fengyan Qi , Dejun Zhang , Qing Zhang
IPC分类号： G10L19/00 , G10L19/022 , G10L19/04
CPC分类号： G10L19/022 , G10L19/04
摘要： The present invention relates to communication technologies and discloses a method, an apparatus and a system for Linear Prediction Coding (LPC) analysis to improve LPC prediction performance and simplify analysis operation. The method includes: obtaining signal feature information of at least one sample point of input signals; comparing and analyzing the signal feature information to obtain an analysis result; selecting a window function according to the analysis result to perform adaptive windowing for the input signals and obtain windowed signals; and processing the windowed signals to obtain an LPC coefficient for linear prediction. The embodiments of the present invention are applicable to LPC.
摘要翻译：本发明涉及通信技术，并且公开了一种用于线性预测编码（LPC）分析的方法，装置和系统，以提高LPC预测性能并简化分析操作。该方法包括：获取输入信号的至少一个采样点的信号特征信息; 比较和分析信号特征信息以获得分析结果; 根据分析结果选择窗口功能，对输入信号进行自适应窗口化，获得窗口信号; 并处理窗口信号以获得用于线性预测的LPC系数。本发明的实施例可应用于LPC。

3. 发明授权

US08294602B2 Coding method, decoding method, coder and decoder 有权
标题翻译：编码方法，解码方法，编码器和解码器
公开(公告)号：US08294602B2
公开(公告)日：2012-10-23
申请号：US12607723
申请日：2009-10-28
申请人： Fuwei Ma , Dejun Zhang
发明人： Fuwei Ma , Dejun Zhang
IPC分类号： H03M7/00
CPC分类号： H03M7/3082 , G10L19/08 , G10L19/10
摘要： A coding method, a decoding method, a coder, and a decoder are disclosed herein. A coding method includes: obtaining the pulse distribution, on a track, of the pulses to be encoded on the track; determining a distribution identifier for identifying the pulse distribution according to the pulse distribution; and generating a coding index that includes the distribution identifier. A decoding method includes: receiving a coding index; obtaining a distribution identifier from the coding index, wherein the distribution identifier is configured to identify the pulse distribution, on a track, of the pulses to be encoded on the track; determining the pulse distribution, on a track, of all the pulses to be encoded on the track according to the distribution identifier; and reconstructing the pulse order on the track according to the pulse distribution.
摘要翻译：本文公开了一种编码方法，解码方法，编码器和解码器。一种编码方法包括：在轨道上获取要编码的脉冲的脉冲分布; 根据脉冲分布确定用于识别脉冲分布的分布标识符; 以及生成包括所述分发标识符的编码索引。解码方法包括：接收编码索引; 从所述编码索引获得分布标识符，其中所述分发标识符被配置为在轨道上识别要在所述轨道上编码的脉冲的脉冲分布; 根据分布标识符确定在轨道上要编码的所有脉冲的轨道上的脉冲分布; 并根据脉冲分布重建轨道上的脉冲顺序。

4. 发明申请

US20110320195A1 METHOD, APPARATUS AND SYSTEM FOR LINEAR PREDICTION CODING ANALYSIS 有权
标题翻译：线性预测编码分析方法，装置和系统
公开(公告)号：US20110320195A1
公开(公告)日：2011-12-29
申请号：US13228965
申请日：2011-09-09
申请人： Jianfeng XU , Lei Miao , Fengyan Ql , Dejun Zhang , Qing Zhang
发明人： Jianfeng XU , Lei Miao , Fengyan Ql , Dejun Zhang , Qing Zhang
IPC分类号： G10L19/00
CPC分类号： G10L19/022 , G10L19/04
摘要： The present invention relates to communication technologies and discloses a method, an apparatus and a system for Linear Prediction Coding (LPC) analysis to improve LPC prediction performance and simplify analysis operation. The method includes: obtaining signal feature information of at least one sample point of input signals; comparing and analyzing the signal feature information to obtain an analysis result; selecting a window function according to the analysis result to perform adaptive windowing for the input signals and obtain windowed signals; and processing the windowed signals to obtain an LPC coefficient for linear prediction. The embodiments of the present invention are applicable to LPC.
摘要翻译：本发明涉及通信技术，并且公开了一种用于线性预测编码（LPC）分析的方法，装置和系统，以提高LPC预测性能并简化分析操作。该方法包括：获取输入信号的至少一个采样点的信号特征信息; 比较和分析信号特征信息以获得分析结果; 根据分析结果选择窗口功能，对输入信号进行自适应窗口化，获得窗口信号; 并处理窗口信号以获得用于线性预测的LPC系数。本发明的实施例可应用于LPC。

5. 发明授权

US07941314B2 Fixed codebook search method and searcher 有权
标题翻译：固定码本搜索方法和搜索器
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。

6. 发明申请

US20090074076A1 METHOD AND DEVICE FOR VECTOR QUANTIZATION 有权
标题翻译：用于矢量量化的方法和装置
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。

7. 发明授权

US08843366B2 Framing method and apparatus 有权
标题翻译：框架方法和装置
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。

8. 发明授权

US08723700B2 Method and device for pulse encoding, method and device for pulse decoding 有权
标题翻译：用于脉冲编码的方法和装置，用于脉冲解码的方法和装置
公开(公告)号：US08723700B2
公开(公告)日：2014-05-13
申请号：US13325993
申请日：2011-12-14
申请人： Fuwei Ma , Dejun Zhang , Minjie Xie , Qing Zhang
发明人： Fuwei Ma , Dejun Zhang , Minjie Xie , Qing Zhang
IPC分类号： H03M7/34
CPC分类号： G10L19/113 , G10L19/002 , G10L19/04 , G10L19/10 , G10L19/12 , G10L2019/0016 , H03M7/30 , H03M7/40 , H03M7/4068
摘要： The present invention discloses a method and a device for pulse encoding, and a method and a device for pulse decoding. The method for pulse encoding includes: calculating an index value of an input pulse; selecting an adjustment threshold value according to the number of pulses, and comparing the index value of the pulse with the adjustment threshold value; if the index value is smaller than the adjustment threshold value, adopting the first number of encoding bits to encode the index value, if the index value is not smaller than the adjustment threshold value, adopting the second number of encoding bits to encode the index value plus an offset value, where the first number is smaller than the second number, the first number and the second number are both positive integers, and the offset value is greater than or equal to the adjustment threshold value.
摘要翻译：本发明公开了一种用于脉冲编码的方法和装置，以及用于脉冲解码的方法和装置。脉冲编码方法包括：计算输入脉冲的指标值; 根据所述脉冲数选择调整阈值，并将所述脉冲的指标值与所述调整阈值进行比较; 如果索引值小于调整阈值，则采用第一数量的编码比特来对索引值进行编码，如果索引值不小于调整阈值，则采用第二数量的编码比特来对索引值进行编码加上偏移值，其中第一个数字小于第二个数字，第一个数字和第二个数字都是正整数，偏移量大于或等于调整阈值。

9. 发明授权

US08600739B2 Coding method, encoder, and computer readable medium that uses one of multiple codebooks based on a type of input signal 有权
标题翻译：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
申请人： Dejun Zhang , Liang Zhang , Yue Lang , Tinghong Wang , Lixiong Li , Wenhai Wu , Wei Xiao , Fuwei Ma , Zexin Liu
发明人： Dejun Zhang , Liang Zhang , Yue Lang , Tinghong Wang , Lixiong Li , Wenhai Wu , Wei Xiao , Fuwei Ma , Zexin Liu
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。

10. 发明授权

US08515744B2 Method for encoding signal, and method for decoding signal 有权
标题翻译：信号编码方法，信号解码方法
公开(公告)号：US08515744B2
公开(公告)日：2013-08-20
申请号：US13172575
申请日：2011-06-29
申请人： Dejun Zhang , Lei Miao , Jianfeng Xu , Fengyan Qi , Qing Zhang , Lixiong Li , Fuwei Ma , Yang Gao
发明人： Dejun Zhang , Lei Miao , Jianfeng Xu , Fengyan Qi , Qing Zhang , Lixiong Li , Fuwei Ma , Yang Gao
IPC分类号： G10L19/00
CPC分类号： G10L19/09 , G10L19/0017 , H04N19/50
摘要： Method, apparatus, and system for encoding and decoding signals are disclosed. The encoding method includes: converting a first-domain signal into a second-domain signal; performing Linear Prediction (LP) processing and Long-Term Prediction (LTP) processing for the second-domain signal; obtaining a long-term flag according to a decision criterion; obtaining a second-domain predictive signal according to the LP processing result and the LTP processing result when the long-term flag is a first flag; or obtaining a second-domain predictive signal according to the LP processing result when the long-term flag is a second flag; converting the second-domain predictive signal into a first-domain predictive signal, calculating a first-domain predictive residual signal; and outputting a bit stream that includes the first-domain predictive residual signal. Subsequent encoding or decoding process is performed adaptively according to the long-term flag; and it is not always necessary to consider the LTP processing result, thus improving the compression performance of codec.
摘要翻译：公开了用于编码和解码信号的方法，装置和系统。编码方法包括：将第一域信号转换为第二域信号; 对第二域信号执行线性预测（LP）处理和长期预测（LTP）处理; 根据决策标准获得长期国旗; 当长期标志是第一标志时，根据LP处理结果和LTP处理结果获得第二域预测信号; 或者当长期标志是第二标志时根据LP处理结果获得第二域预测信号; 将所述第二域预测信号转换为第一域预测信号，计算第一域预测残差信号; 并输出包括第一域预测残差信号的比特流。随后的编码或解码过程根据长期标志自适应地执行; 并不总是需要考虑LTP处理结果，从而提高了编解码器的压缩性能。

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