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。

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。

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。

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。

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。

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。

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。

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。

公开(公告)号：US20130018660A1

公开(公告)日：2013-01-17

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： G10L19/02

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 quantified sub-band normalization factor, or according to the quantified 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 quantified 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。

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。