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。

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。

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：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。