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1. 发明申请

US20090116486A1 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：US20090116486A1
公开(公告)日：2009-05-07
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： H04L12/56 , G10L11/00
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 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。

2. 发明申请

US20090316598A1 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：US20090316598A1
公开(公告)日：2009-12-24
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： H04L12/26 , H04L12/66
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。

3. 发明申请

US20090292542A1 SIGNAL PROCESSING METHOD, PROCESSING APPARTUS AND VOICE DECODER 有权
标题翻译：信号处理方法，处理程序和语音解码器
公开(公告)号：US20090292542A1
公开(公告)日：2009-11-26
申请号：US12539158
申请日：2009-08-11
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： G10L13/00
CPC分类号： G10L19/005
摘要： The present invention discloses a signal processing method adapted to process a synthesized signal in packet loss concealment. The method includes the following steps: receiving a good frame following a lost frame, obtaining an energy ratio of energy of a signal in the signal of the good frame signal to energy of a synthesized signal corresponding to the same time of the good frame; and adjusting the synthesized signal in accordance with the energy ratio. The present invention also discloses a signal processing apparatus and a voice decoder. Through using the method provided by the present invention, the synthesized signal is adjusted in accordance with the energy ratio of the energy of the first good frame following the lost frame to the energy of the synthesized signal to ensure that there be not a waveform sudden change or an energy sudden change at the place where the lost frame and the first good frame following the lost frame are jointed in the synthesized signal, to realize the waveform's smooth transition and to avoid music noises.
摘要翻译：本发明公开了一种适用于处理分组丢失隐藏中的合成信号的信号处理方法。该方法包括以下步骤：接收丢失帧之后的良好帧，获得良好帧信号的信号中的信号的能量与对应于良好帧的相同时间的合成信号的能量的能量比; 并根据能量比调整合成信号。本发明还公开了一种信号处理装置和语音解码器。通过使用本发明提供的方法，根据丢失帧之后的第一好帧的能量与合成信号的能量的能量比来调整合成信号，以确保没有波形突然变化或者丢失帧和丢失帧之后的第一好帧相连接在合成信号中的位置处的能量突然变化，以实现波形的平滑过渡并避免音乐噪声。

4. 发明申请

US20090119098A1 SIGNAL PROCESSING METHOD, PROCESSING APPARATUS AND VOICE DECODER 审中-公开
标题翻译：信号处理方法，处理装置和语音解码器
公开(公告)号：US20090119098A1
公开(公告)日：2009-05-07
申请号：US12264557
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： H04B1/38
CPC分类号： G10L19/005
摘要： The present invention discloses a signal processing method adapted to process a synthesized signal in packet loss concealment. The method includes the following steps: receiving a good frame following a lost frame, obtaining an energy ratio of energy of a signal in the signal of the good frame signal to energy of a synthesized signal corresponding to the same time of the good frame, and adjusting the synthesized signal in accordance with the energy ratio. The present invention also discloses a signal processing apparatus and a voice decoder. Through using the method provided by the present invention, the synthesized signal is adjusted in accordance with the energy ratio of the energy of the first good frame following the lost frame to the energy of the synthesized signal to ensure that there be not a waveform sudden change or an energy sudden change at the place where the lost frame and the first good frame following the lost frame are jointed in the synthesized signal, to realize the waveform's smooth transition and to avoid music noises.
摘要翻译：本发明公开了一种适用于处理分组丢失隐藏中的合成信号的信号处理方法。该方法包括以下步骤：接收丢失帧之后的良好帧，获得良好帧信号的信号中的信号的能量与对应于良好帧的相同时间的合成信号的能量的能量比，以及根据能量比调整合成信号。本发明还公开了一种信号处理装置和语音解码器。通过使用本发明提供的方法，根据丢失帧之后的第一好帧的能量与合成信号的能量的能量比来调整合成信号，以确保没有波形突然变化或者丢失帧和丢失帧之后的第一好帧相连接在合成信号中的位置处的能量突然变化，以实现波形的平滑过渡并避免音乐噪声。

5. 发明申请

US20090210237A1 FRAME COMPENSATION METHOD AND SYSTEM 有权
标题翻译：框架补偿方法与系统
公开(公告)号：US20090210237A1
公开(公告)日：2009-08-20
申请号：US12427112
申请日：2009-04-21
申请人： Ling SHEN , Jianfeng XU , Yaohua GUAN , Wei LI , Lei MIAO , Lijing XU , Qing ZHANG , Zhengzhong DU , Chen HU , Yi YANG
发明人： Ling SHEN , Jianfeng XU , Yaohua GUAN , Wei LI , Lei MIAO , Lijing XU , Qing ZHANG , Zhengzhong DU , Chen HU , Yi YANG
IPC分类号： G10L21/00
CPC分类号： H04L1/0083 , G10L19/005
摘要： A frame compensation method is provided. The method includes: obtaining a length of a lost frame and a length of a correct frame; determining that the length of the correct frame is integral power of 2 times of the length of the lost frame, and then obtaining a data sequence with the same length as the length of the lost frame according to the correct frame; and compensating the lost frame according to the data sequence to obtain a compensated data frame. A frame compensation system is also provided. Lost frames in various formats are compensated according to correct frames in various formats, so that the limitation of the related art that a lost frame in a single format can be merely compensated according to a correct frame in a single format is eliminated, and the effect of the compensated data frames is better than that of filling comfort noises.
摘要翻译：提供了帧补偿方法。该方法包括：获得丢失帧的长度和正确帧的长度; 确定正确帧的长度是丢失帧长度的2倍的整数倍，然后根据正确的帧获得与丢失帧的长度相同长度的数据序列; 并根据数据序列补偿丢失帧以获得补偿数据帧。还提供了帧补偿系统。各种格式的丢帧按照各种格式的正确帧进行补偿，因此消除了相关技术的限制，即单个格式的丢失帧只能根据单一格式的正确帧进行补偿，并且效果的补偿数据帧优于填充舒适噪声。

6. 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。

7. 发明申请

US20100232540A1 PREPROCESSING METHOD, PREPROCESSING APPARATUS AND CODING DEVICE 有权
标题翻译：预处理方法，预处理设备和编码设备
公开(公告)号：US20100232540A1
公开(公告)日：2010-09-16
申请号：US12724066
申请日：2010-03-15
申请人： Lei MIAO , Fengyan QI , Jianfeng XU , Dejun ZHANG , Herve Marcel TADDEI , Qing ZHANG
发明人： Lei MIAO , Fengyan QI , Jianfeng XU , Dejun ZHANG , Herve Marcel TADDEI , Qing ZHANG
IPC分类号： H04L27/00 , H04B15/00
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。

8. 发明申请

US20090204394A1 DECODING METHOD AND DEVICE 有权
标题翻译：解码方法和设备
公开(公告)号：US20090204394A1
公开(公告)日：2009-08-13
申请号：US12427848
申请日：2009-04-22
申请人： Jianfeng XU , Lijing XU , Qing ZHANG , Wei LI , Shenghu SANG , Zhengzhong DU
发明人： Jianfeng XU , Lijing XU , Qing ZHANG , Wei LI , Shenghu SANG , Zhengzhong DU
IPC分类号： G10L21/00
CPC分类号： G10L19/005
摘要： A decoding method and device are provided. The spectrum parameter of a current bad data frame is determined. Specifically, a number of continuous bad frames that occur currently is determined. A spectrum parameter of a good data frame before the current bad data frame is determined. And a constant mean value of a spectrum parameter is determined. Then, the spectrum parameter of the good data frame is adaptively shifted towards the constant mean value of the spectrum parameter according to the number of the continuous bad data frames to calculate and obtain spectrum parameter information of the current bad frame. When the continuous bad data frames occur, the relevance between the spectrum parameter of the nearest good frame and the spectrum parameter of the current bad frame is gradually reduced, so that more accurate spectrum parameter of the current bad data frame can be obtained, thereby obtaining a better speech quality under a same code rate and a same frame error rate.
摘要翻译：提供了一种解码方法和装置。确定当前不良数据帧的频谱参数。具体地，确定当前发生的多个连续的坏帧。确定当前不良数据帧之前的良好数据帧的频谱参数。并确定频谱参数的恒定平均值。然后，根据连续不良数据帧的数量，将良好数据帧的频谱参数自适应地偏移到频谱参数的常数平均值，以计算并获得当前坏帧的频谱参数信息。当发生连续不良数据帧时，最近好帧的频谱参数与当前不良帧的频谱参数之间的相关性逐渐减小，从而可以获得当前不良数据帧的更准确的频谱参数，从而获得在相同的码率和相同的帧错误率下，更好的语音质量。

9. 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。

10. 发明申请

US20120232896A1 METHOD AND AN APPARATUS FOR VOICE ACTIVITY DETECTION 审中-公开
标题翻译：方法和语音活动检测的设备
公开(公告)号：US20120232896A1
公开(公告)日：2012-09-13
申请号：US13476896
申请日：2012-05-21
申请人： Anisse TALEB , Zhe WANG , Jianfeng XU , Lei MIAO
发明人： Anisse TALEB , Zhe WANG , Jianfeng XU , Lei MIAO
IPC分类号： G10L15/20 , G10L15/00
CPC分类号： G10L25/78 , G10L2025/786
摘要： A voice activity detection apparatus (1) comprising: a signal condition analyzing unit (3) which analyses at least one signal parameter of an input signal to detect a signal condition SC of said input signal; at least two voice activity detection units (4-i) comprising different voice detection characteristics, wherein each voice activity detection unit (4-i) performs separately a voice activity detection of said input signal to provide a voice activity detection decision VADD; and a decision combination unit (5) which combines the voice activity detection decisions VADDs provided by said voice activity detection units (4-i) depending on the detected signal condition SC to provide a combined voice activity detection decision cVADD.
摘要翻译：一种语音活动检测装置（1），包括：信号条件分析单元（3），分析输入信号的至少一个信号参数，以检测所述输入信号的信号条件SC; 至少两个语音活动检测单元（4-i），其包括不同的语音检测特性，其中每个语音活动检测单元（4-i）分别执行所述输入信号的语音活动检测以提供语音活动检测决定VADD; 以及决定组合单元（5），其根据检测到的信号条件SC组合由所述语音活动检测单元（4-i）提供的语音活动检测决策VADD，以提供组合的语音活动检测决策cVADD。

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