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1. 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。

2. 发明授权

US08571112B2 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：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。

3. 发明授权

US08566085B2 Preprocessing method, preprocessing apparatus and coding device 有权
标题翻译：预处理方法，预处理装置和编码装置
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
CPC分类号： G10L21/06 , G10L19/06 , G10L19/09 , G10L19/18
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。

4. 发明授权

US08320265B2 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：US08320265B2
公开(公告)日：2012-11-27
申请号：US12264593
申请日：2008-11-04
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： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26
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 signal; obtaining an attenuation factor, according to the change trend 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：获得信号的变化趋势; 根据信号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。

5. 发明授权

US08200481B2 Method and device for performing frame erasure concealment to higher-band signal 有权
标题翻译：用于对较高频带信号进行帧擦除隐藏的方法和装置
公开(公告)号：US08200481B2
公开(公告)日：2012-06-12
申请号：US12129118
申请日：2008-05-29
申请人： Jianfeng Xu , Lei Miao , Chen Hu , Qing Zhang , Lijing Xu , Wei Li , Zhengzhong Du , Yi Yang , Fengyan Qi , Wuzhou Zhan , Dongqi Wang
发明人： Jianfeng Xu , Lei Miao , Chen Hu , Qing Zhang , Lijing Xu , Wei Li , Zhengzhong Du , Yi Yang , Fengyan Qi , Wuzhou Zhan , Dongqi Wang
IPC分类号： G10L11/04 , G10L19/00
CPC分类号： G10L19/005 , G10L19/0204
摘要： The present invention discloses a method for performing a frame erasure concealment to a higher-band signal, including: calculating a periodic intensity of a higher-band signal with respect to a lower-band signal; judging whether the periodic intensity of the higher-band signal is higher than or equal to a preconfigured threshold; if the periodic intensity of the higher-band signal is higher than or equal to the preconfigured threshold, using a pitch period repetition method to perform the frame erasure concealment to the higher-band signal of a current lost frame; and if the periodic intensity of the higher-band signal is lower than the preconfigured threshold, using a previous frame data repetition method to perform the frame erasure concealment to the higher-band signal of the current lost frame. The present invention further discloses a device for performing a frame erasure concealment to a higher-band signal and a speech decoder. The problem that the quality of the voice signal is lowered is avoided.
摘要翻译：本发明公开了一种用于对较高频带信号执行帧擦除隐藏的方法，包括：计算相对于较低频带信号的较高频带信号的周期性强度; 判断高频信号的周期性强度是否高于或等于预配置阈值; 如果高频信号的周期性强度高于或等于预配置阈值，则使用音调周期重复方法对当前丢失帧的较高频带信号执行帧擦除隐藏; 并且如果高频信号的周期性强度低于预配置阈值，则使用先前的帧数据重复方法对当前丢失帧的较高频带信号执行帧擦除隐藏。本发明还公开了一种用于对较高频带信号和语音解码器执行帧擦除隐藏的装置。避免语音信号质量下降的问题。

6. 发明申请

US20110218800A1 METHOD AND APPARATUS FOR OBTAINING PITCH GAIN, AND CODER AND DECODER 审中-公开
标题翻译：用于获取增益的方法和装置，以及编码器和解码器
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。

7. 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。

8. 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。

9. 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。

10. 发明授权

US08489405B2 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，解码器和编码装置
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
IPC分类号： G10L19/00 , G10L19/04 , G10L19/12
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。

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