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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. 发明申请

US20120078641A1 COMPRESSION CODING AND DECODING METHOD, CODER, DECODER, AND CODING DEVICE 有权
标题翻译：压缩编码和解码方法，编码器，解码器和编码设备
公开(公告)号：US20120078641A1
公开(公告)日：2012-03-29
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
IPC分类号： G10L19/00 , H04B1/66
CPC分类号： G10L19/09 , H03M7/40
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。

4. 发明授权

US07835906B1 Encoding method, apparatus and device and decoding method 有权
标题翻译：编码方法，装置和装置及解码方法
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
IPC分类号： G10L19/02 , G10L19/12 , G10L19/00
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。

5. 发明授权

US09105263B2 Audio signal coding and decoding method and device 有权
标题翻译：音频信号编解码方法及装置
公开(公告)号：US09105263B2
公开(公告)日：2015-08-11
申请号：US13532237
申请日：2012-06-25
申请人： Fengyan Qi , Zexin Liu , Lei Miao
发明人： Fengyan Qi , Zexin Liu , Lei Miao
IPC分类号： G10L19/00 , G10L19/002 , G10L19/02 , G10L19/028
CPC分类号： G10L19/032 , G10L19/002 , G10L19/0204 , G10L19/028
摘要： Embodiments of the present invention provide an audio signal coding and decoding method and device. The coding method includes: dividing a frequency band of an audio signal into a plurality of sub-bands, and quantifying a sub-band normalization factor of each sub-band; determining signal bandwidth of bit allocation according to the quantized sub-band normalization factor, or according to the quantized sub-band normalization factor and bit rate information; allocating bits for a sub-band within the determined signal bandwidth; and coding a spectrum coefficient of the audio signal according to the bits allocated for each sub-band. According to embodiments of the present invention, during coding and decoding, signal bandwidth of bit allocation is determined according to the quantized sub-band normalization factor and bit rate information. In this manner, the determined signal bandwidth is effectively coded and decoded by centralizing the bits, and audio quality is improved.
摘要翻译：本发明的实施例提供一种音频信号编码和解码方法和装置。编码方法包括：将音频信号的频带划分成多个子带，并对每个子带的子带归一化因子进行量化; 根据量化的子带归一化因子，或根据量化的子带归一化因子和比特率信息确定比特分配的信号带宽; 在所确定的信号带宽内分配用于子带的比特; 以及根据为每个子带分配的比特来对音频信号的频谱系数进行编码。根据本发明的实施例，在编码和解码期间，根据量化的子带归一化因子和比特率信息来确定比特分配的信号带宽。以这种方式，通过集中位来有效地对确定的信号带宽进行编码和解码，并提高音频质量。

6. 发明授权

US08396716B2 Signal compression method and apparatus 有权
标题翻译：信号压缩方法及装置
公开(公告)号：US08396716B2
公开(公告)日：2013-03-12
申请号：US12648994
申请日：2009-12-29
申请人： Fengyan Qi , Lei Miao , Jianfeng Xu , Dejun Zhang , Herve Marcel Taddei , Qing Zhang
发明人： Fengyan Qi , Lei Miao , Jianfeng Xu , Dejun Zhang , Herve Marcel Taddei , Qing Zhang
IPC分类号： G10L19/00
CPC分类号： G10L19/008 , G10L19/06
摘要： A signal compression method includes: multiplying an input signal by a window function, calculating original autocorrelation coefficients of a windowed input signal. The method also includes calculating a white-noise correction factor or a lag-window according to the original autocorrelation coefficients, and calculating modified autocorrelation coefficients according to the original autocorrelation coefficients, the white-noise correction factor and the lag-window. The method further includes calculating linear prediction coefficients according to the modified autocorrelation coefficients, and outputting a coded bit stream according to the linear prediction coefficients.
摘要翻译：信号压缩方法包括：将输入信号乘以窗口函数，计算窗口输入信号的原始自相关系数。该方法还包括根据原始自相关系数计算白噪声校正因子或滞后窗口，并根据原始自相关系数，白噪声校正因子和滞后窗计算修正的自相关系数。该方法还包括根据修正的自相关系数计算线性预测系数，并根据线性预测系数输出编码比特流。

7. 发明申请

US20110313761A1 METHOD FOR ENCODING SIGNAL, AND METHOD FOR DECODING SIGNAL 有权
标题翻译：编码信号的方法和解码信号的方法
公开(公告)号：US20110313761A1
公开(公告)日：2011-12-22
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： The present disclosure relates to a method, apparatus, and system for encoding and decoding signals. 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 decision criteria; obtaining a second-domain contribution signal according to the LP processing result and the LTP processing result when the long-term flag is a first flag; obtaining a second-domain contribution signal according to the LP processing result when the long-term flag is a second flag; converting the second-domain contribution signal into a first-domain contribution signal, and calculating a first-domain predictive residual signal; and outputting a bit stream that includes the first-domain predictive residual signal. With the present disclosure, a subsequent encoding or decoding process is performed adaptively according to the long-term flag; when the long-term flag is the second flag, it is not necessary to consider the LTP processing result, thus improving the compression performance of a codec.
摘要翻译：本公开涉及用于对信号进行编码和解码的方法，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贡献信号; 当长期标志是第二标志时，根据LP处理结果获得第二域贡献信号; 将所述第二域贡献信号转换为第一域贡献信号，以及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。根据本公开，根据长期标志自适应地进行后续的编码或解码处理; 当长期标志是第二个标志时，不需要考虑LTP处理结果，从而提高编解码器的压缩性能。

8. 发明授权

US07957961B2 Method and apparatus for obtaining an attenuation factor 有权
标题翻译：用于获得衰减因子的方法和装置
公开(公告)号：US07957961B2
公开(公告)日：2011-06-07
申请号：US12556048
申请日：2009-09-09
申请人： Wuzhou Zhan , Dongqi Wang , Yongfeng Tu , Jing Wang , Qing Zhang , Lei Miao , Jianfeng Xu , Chen Hu , Yi Yang , Zhengzhong Du , Fengyan Qi
发明人： Wuzhou Zhan , Dongqi Wang , Yongfeng Tu , Jing Wang , Qing Zhang , Lei Miao , Jianfeng Xu , Chen Hu , Yi Yang , Zhengzhong Du , Fengyan Qi
IPC分类号： G10L19/00 , G10L19/08 , H03M13/00 , H04L1/00
CPC分类号： G10L19/005 , G10L19/0204 , G10L19/097
摘要： The present invention discloses a method for obtaining an attenuation factor. The method is adapted to process the synthesized signal in packet loss concealment, and includes: obtaining a change trend of a pitch of a signal; obtaining an attenuation factor, according to the change trend of the pitch of the signal. The present invention also discloses an apparatus for obtaining an attenuation factor. A self-adaptive attenuation factor is adjusted dynamically by using the latest change trend of a history signal by using the present invention. The smooth transition from the history data to the data last received is realized so that the attenuation speed is kept consistent between the compensated signal and the original signal as much as possible for adapting to the characteristic of various human voices.
摘要翻译：本发明公开了一种获得衰减因子的方法。该方法适用于处理分组丢失隐藏中的合成信号，包括：获得信号间距的变化趋势; 根据信号音调的变化趋势获得衰减因子。本发明还公开了一种用于获得衰减因子的装置。通过使用本发明的历史信号的最新变化趋势来动态调整自适应衰减因子。实现从历史数据到最后接收的数据的平滑过渡，使得尽可能地使补偿信号和原始信号之间的衰减速度保持一致，以适应各种人声的特征。

9. 发明申请

US20100305955A1 ENCODING METHOD, APPARATUS AND DEVICE AND DECODING METHOD 有权
标题翻译：编码方法，装置和装置及解码方法
公开(公告)号：US20100305955A1
公开(公告)日：2010-12-02
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
IPC分类号： G10L19/00
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。

10. 发明申请

US20100290535A1 Specification method and apparatus for coding and decoding 有权
标题翻译：用于编码和解码的规范方法和装置
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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