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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
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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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。
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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
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。
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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
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。
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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。
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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。
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公开(公告)号：US20110320211A1
公开(公告)日：2011-12-29
申请号：US13172509
申请日：2011-06-29
申请人： Zexin LIU , Lei MIAO , Longyin CHEN , Chen HU , Herve Marcel TADDEI , Qing ZHANG
发明人： Zexin LIU , Lei MIAO , Longyin CHEN , Chen HU , Herve Marcel TADDEI , Qing ZHANG
IPC分类号： G10L19/00
CPC分类号： G10L19/0208 , G10L19/26 , G10L21/0208
摘要： A method and an apparatus for processing a signal are provided. The method includes: obtaining an energy average value of each sub-band for a current frame frequency-domain signal; obtaining a current frame modification coefficient of each sub-band for the current frame frequency-domain signal according to a spectral envelope and the energy average value of each sub-band; obtaining a weighted modification coefficient of each sub-band for the current frame frequency-domain signal by using the current frame modification coefficient and a relevant frame modification coefficient; and modifying the spectral envelope of each sub-band for the current frame frequency-domain signal by using the weighted modification coefficient.
摘要翻译： 提供了一种用于处理信号的方法和装置。 该方法包括：获得当前帧频域信号的每个子带的能量平均值; 根据每个子带的频谱包络和能量平均值，获取当前帧频域信号的每个子带的当前帧修改系数; 通过使用当前帧修正系数和相关帧修正系数，获得当前帧频域信号的每个子带的加权修正系数; 以及通过使用加权修正系数来修改当前帧频域信号的每个子带的频谱包络。
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8.发明申请SIGNAL CLASSIFICATION PROCESSING METHOD, CLASSIFICATION PROCESSING DEVICE, AND ENCODING SYSTEM 有权信号分类处理方法，分类处理装置和编码系统公开(公告)号：US20110238427A1
公开(公告)日：2011-09-29
申请号：US13160115
申请日：2011-06-14
申请人： Longyin CHEN , Zexin LIU , Lei MIAO , Chen HU , Wei XIAO , Herve Marcel TADDEI , Qing ZHANG
发明人： Longyin CHEN , Zexin LIU , Lei MIAO , Chen HU , Wei XIAO , Herve Marcel TADDEI , Qing ZHANG
IPC分类号： G10L19/00
CPC分类号： G10L19/22 , G10L19/025
摘要： A signal classification processing method, a classification processing device, and an encoding system are provided. The signal classification processing method includes: obtaining a high band input signal; determining a signal type of the obtained high band input signal according to a time domain characteristic parameter and/or a frequency domain characteristic parameter of the high band input signal; and determining an encoding mode corresponding to the signal type. The classification processing device includes: a receiving unit, configured to obtain a high band input signal; and a processing unit, configured to determine a signal type of the obtained high band input signal according to a time domain characteristic parameter and/or a frequency domain characteristic parameter of the high band input signal and determine an encoding mode corresponding to the signal type. An encoding system is also provided. Therefore, type subdivision and processing are performed on the high band input signal, so as to facilitate encoding and decoding processing of the signal.
摘要翻译： 提供信号分类处理方法，分类处理装置和编码系统。 信号分类处理方法包括：获得高频带输入信号; 根据高频带输入信号的时域特性参数和/或频域特性参数确定所获得的高频带输入信号的信号类型; 以及确定与所述信号类型对应的编码模式。 分类处理装置包括：接收单元，被配置为获得高频带输入信号; 以及处理单元，被配置为根据所述高频带输入信号的时域特性参数和/或频域特性参数来确定所获得的高频带输入信号的信号类型，并且确定与所述信号类型对应的编码模式。 还提供了编码系统。 因此，对高频带输入信号进行类型细分处理，便于信号的编码和解码处理。
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公开(公告)号：US20110216839A1
公开(公告)日：2011-09-08
申请号：US13111834
申请日：2011-05-19
申请人： Chen HU , Zexin LIU , Lei MIAO , Longyin CHEN , Qing ZHANG , Wei XIAO , Herve Marcel TADDEI
发明人： Chen HU , Zexin LIU , Lei MIAO , Longyin CHEN , Qing ZHANG , Wei XIAO , Herve Marcel TADDEI
摘要： A method, device and system for signal encoding and decoding are disclosed. The method includes: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that requires enhancement layer signal encoding according to the core layer signal code and the number of bits that can be used by an enhancement layer; obtaining an enhancement layer signal code of the enhancement sample point; and outputting a bit stream, where the bit stream includes the core layer signal code and the enhancement layer signal code. In embodiments of the present invention, according to the number of bits that can be used by the enhancement layer, the enhancement sample point that requires enhancement layer signal encoding is selected; the enhancement layer signal of the selected enhancement sample point is encoded and decoded; when no sufficient bits are available for the enhancement layer, the enhancement quality of the core layer can be improved.
摘要翻译： 公开了用于信号编码和解码的方法，装置和系统。 该方法包括：编码核心层信号以获得核心层信号码; 选择需要根据核心层信号码的增强层信号编码和增强层可以使用的位数的增强采样点; 获得增强采样点的增强层信号码; 并输出比特流，其中比特流包括核心层信号码和增强层信号码。 在本发明的实施例中，根据增强层可以使用的比特数，选择需要增强层信号编码的增强采样点; 所选择的增强采样点的增强层信号被编码和解码; 当没有足够的比特可用于增强层时，可以提高核心层的增强质量。
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10.发明申请公开(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
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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