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。

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：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。

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。

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。

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。

公开(公告)号：US20120086586A1

公开(公告)日：2012-04-12

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： H03M7/30

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。

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。