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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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公开(公告)号：US20110099005A1
公开(公告)日：2011-04-28
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： G10L11/04
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。
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43.发明授权公开(公告)号：US08489405B2
公开(公告)日：2013-07-16
申请号：US13309373
申请日：2011-12-01
申请人： Fengyan Qi , Lei Miao , Qing Zhang
发明人： Fengyan Qi , Lei Miao , Qing Zhang
摘要： The embodiments of the present invention relate to a compression coding and decoding method, a coder, a decoder and a coding device. The compression coding method includes: extracting sign information of an input signal to obtain an absolute value signal of the input signal; obtaining a residual signal of the absolute value signal by using a prediction coefficient, where the prediction coefficient is obtained by prediction and analysis that are performed according to a signal characteristic of the absolute value signal of the input signal; and multiplexing the residual signal, the sign information and a coding parameter to output a coding code stream, after the residual signal, the sign information and the coding parameter are respectively coded, so as to improve compression efficiency of a voice and audio signal.
摘要翻译： 本发明的实施例涉及压缩编码和解码方法，编码器，解码器和编码装置。 压缩编码方法包括：提取输入信号的符号信息以获得输入信号的绝对值信号; 通过使用预测系数获得绝对值信号的残差信号，其中通过根据输入信号的绝对值信号的信号特性执行的预测和分析获得预测系数; 在分别对剩余信号，符号信息和编码参数进行编码之后，复用残留信号，符号信息和编码参数以输出编码码流，以提高语音和音频信号的压缩效率。
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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
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。
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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。
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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。
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公开(公告)号：US07835906B1
公开(公告)日：2010-11-16
申请号：US12790345
申请日：2010-05-28
申请人： Lei Miao , Fengyan Qi , Qing Zhang
发明人： Lei Miao , Fengyan Qi , Qing Zhang
CPC分类号： G10L19/22 , G10L19/0017
摘要： The present invention relates to encoding technology. The encoding method includes selecting a second encoding mode for encoding an input frame signal according to an analysis on signal characteristic of the input frame signal; obtaining coding demand values for a preset first encoding mode and the second encoding mode which are used to encode the input frame signal; determining, from the above encoding modes based on the coding demand values, an encoding mode for encoding the input frame signal; and multiplexing information of the determined encoding mode and encoded data which are encoded according to the determined encoding mode. Hence, the compatibility and the prioritization in terms of the encoding modes can be achieved.
摘要翻译： 本发明涉及编码技术。 编码方法包括根据对输入帧信号的信号特性的分析来选择用于对输入帧信号进行编码的第二编码模式; 获得用于编码输入帧信号的预设第一编码模式和第二编码模式的编码需求值; 从上述基于编码需求值的编码模式确定用于对输入帧信号进行编码的编码模式; 以及根据所确定的编码模式复用所确定的编码模式和编码数据的信息。 因此，可以实现在编码模式方面的兼容性和优先级。
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公开(公告)号：US20100290535A1
公开(公告)日：2010-11-18
申请号：US12778644
申请日：2010-05-12
申请人： Fengyan Qi , Lei Miao , Qing Zhang
发明人： Fengyan Qi , Lei Miao , Qing Zhang
IPC分类号： H04N11/02
CPC分类号： G10L19/0019 , H03M7/30
摘要： A coding method, a decoding method, a coding apparatus, and a decoding apparatus are disclosed herein. A coding method includes: obtaining a value of each sample of an input data frame; determining pulse samples and non-pulse samples in the input data frame according to the distribution of values of samples of the input data frame; encoding the determined pulse samples in the input data frame in a first coding mode to obtain a first data stream; encoding the determined non-pulse samples in the input data frame in a second coding mode to obtain a second data stream; and multiplexing the first data stream and the second data stream to obtain an output coded data stream of the input data frame. Compared with the prior art, the technical solution under the present disclosure reduces the number of bits required for encoding the entire data frame is reduced, and improves the compression efficiency of the data frame with a wide dynamic range.
摘要翻译： 本文公开了一种编码方法，解码方法，编码装置和解码装置。 编码方法包括：获取输入数据帧的每个样本的值; 根据输入数据帧的样本值的分布，确定输入数据帧中的脉冲样本和非脉冲样本; 以第一编码模式对输入数据帧中确定的脉冲样本进行编码以获得第一数据流; 以第二编码模式对输入数据帧中确定的非脉冲样本进行编码，以获得第二数据流; 并且多路复用第一数据流和第二数据流，以获得输入数据帧的输出编码数据流。 与现有技术相比，本公开的技术方案减少了整个数据帧的编码所需的比特数量，并提高了宽动态范围内的数据帧的压缩效率。
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公开(公告)号：US08571112B2
公开(公告)日：2013-10-29
申请号：US12778644
申请日：2010-05-12
申请人： Fengyan Qi , Lei Miao , Qing Zhang
发明人： Fengyan Qi , Lei Miao , Qing Zhang
IPC分类号： G10L19/00
CPC分类号： G10L19/0019 , H03M7/30
摘要： A coding method, a decoding method, a coding apparatus, and a decoding apparatus are disclosed herein. A coding method includes: obtaining a value of each sample of an input data frame; determining pulse samples and non-pulse samples in the input data frame according to the distribution of values of samples of the input data frame; encoding the determined pulse samples in the input data frame in a first coding mode to obtain a first data stream; encoding the determined non-pulse samples in the input data frame in a second coding mode to obtain a second data stream; and multiplexing the first data stream and the second data stream to obtain an output coded data stream of the input data frame. Compared with the prior art, the technical solution under the present disclosure reduces the number of bits required for encoding the entire data frame is reduced, and improves the compression efficiency of the data frame with a wide dynamic range.
摘要翻译： 本文公开了一种编码方法，解码方法，编码装置和解码装置。 编码方法包括：获取输入数据帧的每个样本的值; 根据输入数据帧的样本值的分布，确定输入数据帧中的脉冲样本和非脉冲样本; 以第一编码模式对输入数据帧中确定的脉冲样本进行编码以获得第一数据流; 以第二编码模式对输入数据帧中确定的非脉冲样本进行编码，以获得第二数据流; 并且多路复用第一数据流和第二数据流，以获得输入数据帧的输出编码数据流。 与现有技术相比，本公开的技术方案减少了整个数据帧的编码所需的比特数量，并提高了宽动态范围内的数据帧的压缩效率。
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公开(公告)号：US08566085B2
公开(公告)日：2013-10-22
申请号：US12724066
申请日：2010-03-15
申请人： Lei Miao , Fengyan Qi , Jianfeng Xu , Dejun Zhang , Qing Zhang
发明人： Lei Miao , Fengyan Qi , Jianfeng Xu , Dejun Zhang , Qing Zhang
IPC分类号： G10L19/00
摘要： The present disclosure relates to coding and decoding technologies, and discloses a preprocessing method, a preprocessing apparatus, and a coding device. The preprocessing method includes: obtaining characteristic information of a current frame signal; identifying whether the current frame signal requires no coding operation of removing LTC according to the characteristic information of the current frame signal and preset information; and if identifying that the current frame signal requires no coding operation of removing LTC, performing the coding operation of removing STC for the current frame signal; and if identifying that the current frame signal requires the coding operation of removing LTC, performing the coding operations of removing both LTC and STC for the current frame signal. Through the technical solution provided herein, the coding operation of removing LTC is performed for only part of the input frame signals.
摘要翻译： 本公开涉及编码和解码技术，并且公开了一种预处理方法，预处理装置和编码装置。 预处理方法包括：获得当前帧信号的特征信息; 识别当前帧信号是否不需要根据当前帧信号和预设信息的特征信息去除LTC的编码操作; 并且如果识别出当前帧信号不需要去除LTC的编码操作，则执行去除当前帧信号的STC的编码操作; 并且如果识别当前帧信号需要去除LTC的编码操作，则执行去除当前帧信号的LTC和STC的编码操作。 通过本文提供的技术方案，仅对部分输入帧信号执行去除LTC的编码操作。
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