公开(公告)号：US08219395B2

公开(公告)日：2012-07-10

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： G10L21/02 ,  G10L19/00

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：US07957961B2

公开(公告)日：2011-06-07

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： G10L19/00 ,  G10L19/08 ,  H03M13/00 ,  H04L1/00

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 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：US20090076805A1

公开(公告)日：2009-03-19

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 ,  G10L21/00

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.

公开(公告)号：US07835912B2

公开(公告)日：2010-11-16

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 ,  G10L19/00

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：US07552048B2

公开(公告)日：2009-06-23

申请号：US12273391

申请日：2008-11-18

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： A method for performing a frame erasure concealment for a higher-band signal involves calculating a periodic intensity of the higher-band signal with respect to pitch period information of a lower-band signal; comparing the periodic intensity to a preconfigured threshold and, if the periodic intensity is greater or equal to the preconfigured threshold, performing the frame erasure concealment with a pitch period repetition based method. If the periodic intensity is less than the preconfigured threshold, performing the frame erasure concealment with a previous frame data repetition based method. A device for performing a frame erasure concealment includes a periodic intensity calculation module, a pitch period repetition module, and a previous frame data repetition module. The pitch period repetition module performs the frame erasure concealment with a pitch period repetition based method; and the previous frame data repetition module performs the frame erasure concealment with a previous frame data repetition based method.

摘要翻译： 用于执行较高频带信号的帧擦除隐藏的方法包括：计算相对于较低频带信号的音调周期信息的较高频带信号的周期性强度; 将周期性强度与预配置的阈值进行比较，并且如果周期性强度大于或等于预配置阈值，则以基于音调周期重复的方法执行帧擦除隐藏。 如果周期性强度小于预配置阈值，则使用先前基于帧数据重复的方法来执行帧擦除隐藏。 用于执行帧擦除隐藏的装置包括周期性强度计算模块，音调周期重复模块和先前的帧数据重复模块。 音调周期重复模块以音调周期重复方式执行帧擦除隐藏; 前一帧数据重复模块利用先前基于帧数据重复的方法执行帧擦除隐藏。

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。

公开(公告)号：US08396716B2

公开(公告)日：2013-03-12

申请号：US12648994

申请日：2009-12-29

申请人： Fengyan Qi ,  Lei Miao ,  Jianfeng Xu ,  Dejun Zhang ,  Herve Marcel Taddei ,  Qing Zhang

发明人： Fengyan Qi ,  Lei Miao ,  Jianfeng Xu ,  Dejun Zhang ,  Herve Marcel Taddei ,  Qing Zhang

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G10L19/06

摘要： A signal compression method includes: multiplying an input signal by a window function, calculating original autocorrelation coefficients of a windowed input signal. The method also includes calculating a white-noise correction factor or a lag-window according to the original autocorrelation coefficients, and calculating modified autocorrelation coefficients according to the original autocorrelation coefficients, the white-noise correction factor and the lag-window. The method further includes calculating linear prediction coefficients according to the modified autocorrelation coefficients, and outputting a coded bit stream according to the linear prediction coefficients.

摘要翻译： 信号压缩方法包括：将输入信号乘以窗口函数，计算窗口输入信号的原始自相关系数。 该方法还包括根据原始自相关系数计算白噪声校正因子或滞后窗口，并根据原始自相关系数，白噪声校正因子和滞后窗计算修正的自相关系数。 该方法还包括根据修正的自相关系数计算线性预测系数，并根据线性预测系数输出编码比特流。

公开(公告)号：US20100290535A1

公开(公告)日：2010-11-18

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： H04N11/02

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。

公开(公告)号：US20100169086A1

公开(公告)日：2010-07-01

申请号：US12648994

申请日：2009-12-29

申请人： Fengyan Qi ,  Lei Miao ,  Jianfeng Xu ,  Dejun Zhang ,  Herve Marcel Taddei ,  Qing Zhang

发明人： Fengyan Qi ,  Lei Miao ,  Jianfeng Xu ,  Dejun Zhang ,  Herve Marcel Taddei ,  Qing Zhang

IPC分类号： G10L19/00

CPC分类号： G10L19/008 ,  G10L19/06

摘要： A signal compression method includes: multiplying an input signal by a window function, calculating original autocorrelation coefficients of a windowed input signal. The method also includes calculating a white-noise correction factor or a lag-window according to the original autocorrelation coefficients, and calculating modified autocorrelation coefficients according to the original autocorrelation coefficients, the white-noise correction factor and the lag-window. The method further includes calculating linear prediction coefficients according to the modified autocorrelation coefficients, and outputting a coded bit stream according to the linear prediction coefficients.

摘要翻译： 信号压缩方法包括：将输入信号乘以窗口函数，计算窗口输入信号的原始自相关系数。 该方法还包括根据原始自相关系数计算白噪声校正因子或滞后窗口，并根据原始自相关系数，白噪声校正因子和滞后窗计算修正的自相关系数。 该方法还包括根据修正的自相关系数计算线性预测系数，并根据线性预测系数输出编码比特流。

公开(公告)号：US20100169084A1

公开(公告)日：2010-07-01

申请号：US12646669

申请日：2009-12-23

申请人： Dejun Zhang ,  Jianfeng Xu ,  Lei Miao ,  Fengyan Qi ,  Qing Zhang ,  Herve Marcel Taddei ,  Lixiong Li ,  Fuwei Ma ,  Yang Gao

发明人： Dejun Zhang ,  Jianfeng Xu ,  Lei Miao ,  Fengyan Qi ,  Qing Zhang ,  Herve Marcel Taddei ,  Lixiong Li ,  Fuwei Ma ,  Yang Gao

IPC分类号： G10L11/04

CPC分类号： G10L25/90 ,  G10L19/09 ,  G10L25/06

摘要： The present invention relates to a method and apparatus for pitch search. One method includes: obtaining a characteristic function value of a residual signal, where the residual signal is a result of removing a Long-Term Prediction (LTP) contribution signal from input speech signals; and obtaining a pitch according to the characteristic function value of the residual signal.

摘要翻译： 本发明涉及一种用于音高搜索的方法和装置。 一种方法包括：获得残差信号的特征函数值，其中残留信号是从输入语音信号中去除长期预测（LTP）贡献信号的结果; 并根据残差信号的特征函数值获得音高。