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31. 发明申请

US20110181449A1 Encoding and Decoding Method and Device 有权
标题翻译：编码和解码方法和设备
公开(公告)号：US20110181449A1
公开(公告)日：2011-07-28
申请号：US13086774
申请日：2011-04-14
申请人： Chen Hu , Lei Miao , Zexin Liu , Longyin Chen , Qing Zhang , Herve Marcel Taddei
发明人： Chen Hu , Lei Miao , Zexin Liu , Longyin Chen , Qing Zhang , Herve Marcel Taddei
IPC分类号： H03M5/02
CPC分类号： G10L19/24 , G10L19/032
摘要： A device relating to information processing technologies and including an encoding and decoding method configured to solve the poor decoding quality problem. The method includes: encoding each sample of an input signal to generate an encoded signal of a core layer; comparing residuals of all or a part of the samples of the input signal with encoding thresholds, where the residuals are generated by core layer encoding, and performing encoding according to comparison results to generate an encoded signal of an enhancement layer; and writing the encoded signal of the core layer and the encoded signal of the enhancement layer into a bitstream to generate an encoded signal of the input signal.
摘要翻译：一种与信息处理技术相关的装置，包括用于解决差的解码质量问题的编码和解码方法。该方法包括：对输入信号的每个样本进行编码以产生核心层的编码信号; 将输入信号的全部或部分样本的残差与编码阈值进行比较，其中通过核心层编码生成残差，并根据比较结果执行编码以产生增强层的编码信号; 以及将核心层的编码信号和增强层的编码信号写入比特流以产生输入信号的编码信号。

32. 发明授权

US09443524B2 Stereo decoding method and apparatus 有权
标题翻译：立体声解码方法和装置
公开(公告)号：US09443524B2
公开(公告)日：2016-09-13
申请号：US13437552
申请日：2012-04-02
申请人： Wenhai Wu , Lei Miao , Yue Lang , Qi Zhang
发明人： Wenhai Wu , Lei Miao , Yue Lang , Qi Zhang
IPC分类号： H04R5/00 , G06F17/00 , G10L19/008
CPC分类号： H04S5/005 , G10L19/008 , H04S5/00 , H04S2420/01 , H04S2420/03
摘要： A stereo decoding method and apparatus are disclosed. The method includes: restoring a monophonic signal from a received code stream through decoding; restoring an interchannel level difference, a group delay, and a group phase from the received code stream through decoding; and processing the monophonic signal according to the interchannel level difference, group delay, and group phase to obtain a first channel signal and a second channel signal. According to the stereo decoding method and apparatus provided in embodiments of the present invention, the first and second channel signals are obtained according to the monophonic signal, ILD, group delay, and group phase by referring to not only the ILD but also the group delay and group phase, thereby yielding favorable stereo sound field effect for the obtained first and second channel signals.
摘要翻译：公开了一种立体声解码方法和装置。该方法包括：通过解码从接收到的码流中恢复单声道信号; 通过解码从接收到的代码流中恢复通道间级差，组延迟和组相位; 以及根据通道间电平差，组延迟和组相位处理单声道信号以获得第一通道信号和第二通道信号。根据本发明的实施例中提供的立体声解码方法和装置，不仅参照ILD而且还参照组延迟，根据单声道信号，ILD，组延迟和组相位来获得第一和第二声道信号和组相位，从而为获得的第一和第二信道信号产生有利的立体声场效应。

33. 发明申请

US20120308018A1 STEREO SIGNAL DOWN-MIXING METHOD, ENCODING/DECODING APPARATUS AND ENCODING AND DECODING SYSTEM 有权
标题翻译：立体声信号下混合方法，编码/解码装置和编码和解码系统
公开(公告)号：US20120308018A1
公开(公告)日：2012-12-06
申请号：US13584579
申请日：2012-08-13
申请人： Lei Miao , Wenhai Wu , Yue Lang
发明人： Lei Miao , Wenhai Wu , Yue Lang
IPC分类号： H04R5/00
CPC分类号： H04S1/002 , G10L19/008 , G10L25/18 , H04S2400/03 , H04S2420/01 , H04S2420/03
摘要： Embodiments of the present invention provide a stereo signal down-mixing method, encoding/decoding apparatus and system. The down-mixing method includes: converting a first channel time-domain signal and a second channel time-domain signal into a first channel frequency-domain signal and a second channel frequency-domain signal; obtaining a frequency-domain channel signal level difference and a frequency-domain channel signal phase difference between the two channel frequency-domain signals; for each frequency bin in each frequency band, using a function based on the frequency-domain channel signal level difference and frequency-domain channel signal phase difference to obtain a down-mixed signal phase that is located between phases of the two channel frequency-domain signals, and obtaining a down-mixed signal amplitude through calculation; and obtaining a frequency-domain down-mixed signal according to the phase and amplitude.
摘要翻译：本发明的实施例提供立体声信号下混合方法，编码/解码装置和系统。下混合方法包括：将第一信道时域信号和第二信道时域信号转换成第一信道频域信号和第二信道频域信号; 获得两个信道频域信号之间的频域信道信号电平差和频域信道信号相位差; 对于每个频带中的每个频率仓，使用基于频域信道信号电平差和频域信道信号相位差的函数来获得位于两个信道频域的相位之间的下变频信号相位信号，并通过计算获得下混合信号幅度; 并根据相位和幅度获得频域降混信号。

34. 发明申请

US20120300945A1 Stereo Coding Method and Apparatus 有权
标题翻译：立体声编码方法和装置
公开(公告)号：US20120300945A1
公开(公告)日：2012-11-29
申请号：US13567982
申请日：2012-08-06
申请人： Wenhai Wu , Lei Miao , Yue Lang , Qi Zhang
发明人： Wenhai Wu , Lei Miao , Yue Lang , Qi Zhang
IPC分类号： H04R5/00
CPC分类号： G10L19/008 , G10L25/06
摘要： A stereo coding method includes transforming a stereo left channel signal and a stereo right channel signal in a time domain to a frequency domain to form a left channel signal and a right channel signal in the frequency domain; down-mixing the left channel signal and the right channel signal in the frequency domain to generate a monophonic down-mix signal, and transmitting bits obtained after quantization coding is performed on the down-mix signal; extracting spatial parameters of the left channel signal and the right channel signal in the frequency domain; estimating a group delay and a group phase between stereo left and right channels by using the left channel signal and the right channel signal in the frequency domain; and performing quantization coding on the group delay, the group phase and the spatial parameters, so as to obtain a high-quality stereo coding performance at a low bit rate.
摘要翻译：立体声编码方法包括将时域中的立体声左声道信号和立体声右声道信号变换为频域，以在频域中形成左声道信号和右声道信号; 在频域中对左声道信号和右声道信号进行下混频以产生单声道降混信号，并且对缩小混音信号执行在量化编码之后获得的发送比特; 在频域中提取左声道信号和右声道信号的空间参数; 通过使用左声道信号和频域中的右声道信号来估计立体声左和右声道之间的组延迟和组相位; 对组延迟，组相位和空间参数进行量化编码，以便以低比特率获得高质量的立体声编码性能。

35. 发明授权

US09319818B2 Stereo signal down-mixing method, encoding/decoding apparatus and encoding and decoding system 有权
标题翻译：立体声信号下混方式，编码/解码装置及编解码系统
公开(公告)号：US09319818B2
公开(公告)日：2016-04-19
申请号：US13584579
申请日：2012-08-13
申请人： Lei Miao , Wenhai Wu , Yue Lang
发明人： Lei Miao , Wenhai Wu , Yue Lang
IPC分类号： H04S1/00 , G10L19/008 , G10L25/18
CPC分类号： H04S1/002 , G10L19/008 , G10L25/18 , H04S2400/03 , H04S2420/01 , H04S2420/03
摘要： Embodiments of the present invention provide a stereo signal down-mixing method, encoding/decoding apparatus and system. The down-mixing method includes: converting a first channel time-domain signal and a second channel time-domain signal into a first channel frequency-domain signal and a second channel frequency-domain signal; obtaining a frequency-domain channel signal level difference and a frequency-domain channel signal phase difference between the two channel frequency-domain signals; for each frequency bin in each frequency band, using a function based on the frequency-domain channel signal level difference and frequency-domain channel signal phase difference to obtain a down-mixed signal phase that is located between phases of the two channel frequency-domain signals, and obtaining a down-mixed signal amplitude through calculation; and obtaining a frequency-domain down-mixed signal according to the phase and amplitude.
摘要翻译：本发明的实施例提供立体声信号下混合方法，编码/解码装置和系统。下混合方法包括：将第一信道时域信号和第二信道时域信号转换成第一信道频域信号和第二信道频域信号; 获得两个信道频域信号之间的频域信道信号电平差和频域信道信号相位差; 对于每个频带中的每个频率仓，使用基于频域信道信号电平差和频域信道信号相位差的函数来获得位于两个信道频域的相位之间的下变频信号相位信号，并通过计算获得下混合信号幅度; 并根据相位和幅度获得频域降混信号。

36. 发明授权

US09105265B2 Stereo coding method and apparatus 有权
标题翻译：立体声编码方法和装置
公开(公告)号：US09105265B2
公开(公告)日：2015-08-11
申请号：US13567982
申请日：2012-08-06
申请人： Wenhai Wu , Lei Miao , Yue Lang , Qi Zhang
发明人： Wenhai Wu , Lei Miao , Yue Lang , Qi Zhang
IPC分类号： H04R5/00 , G10L19/008
CPC分类号： G10L19/008 , G10L25/06
摘要： A stereo coding method includes transforming a stereo left channel signal and a stereo right channel signal in a time domain to a frequency domain to form a left channel signal and a right channel signal in the frequency domain; down-mixing the left channel signal and the right channel signal in the frequency domain to generate a monophonic down-mix signal, and transmitting bits obtained after quantization coding is performed on the down-mix signal; extracting spatial parameters of the left channel signal and the right channel signal in the frequency domain; estimating a group delay and a group phase between stereo left and right channels by using the left channel signal and the right channel signal in the frequency domain; and performing quantization coding on the group delay, the group phase and the spatial parameters, so as to obtain a high-quality stereo coding performance at a low bit rate.
摘要翻译：立体声编码方法包括将时域中的立体声左声道信号和立体声右声道信号变换为频域，以在频域中形成左声道信号和右声道信号; 在频域中对左声道信号和右声道信号进行下混频以产生单声道降混信号，并且对缩小混音信号执行在量化编码之后获得的发送比特; 在频域中提取左声道信号和右声道信号的空间参数; 通过使用左声道信号和频域中的右声道信号来估计立体声左和右声道之间的组延迟和组相位; 对组延迟，组相位和空间参数进行量化编码，以便以低比特率获得高质量的立体声编码性能。

37. 发明授权

US08320265B2 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：US08320265B2
公开(公告)日：2012-11-27
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： G01R31/08 , G06F11/00 , G08C15/00 , H04J1/16 , H04J3/14 , H04L1/00 , H04L12/26
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。

38. 发明授权

US08200481B2 Method and device for performing frame erasure concealment to higher-band signal 有权
标题翻译：用于对较高频带信号进行帧擦除隐藏的方法和装置
公开(公告)号：US08200481B2
公开(公告)日：2012-06-12
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 , G10L19/00
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.
摘要翻译：本发明公开了一种用于对较高频带信号执行帧擦除隐藏的方法，包括：计算相对于较低频带信号的较高频带信号的周期性强度; 判断高频信号的周期性强度是否高于或等于预配置阈值; 如果高频信号的周期性强度高于或等于预配置阈值，则使用音调周期重复方法对当前丢失帧的较高频带信号执行帧擦除隐藏; 并且如果高频信号的周期性强度低于预配置阈值，则使用先前的帧数据重复方法对当前丢失帧的较高频带信号执行帧擦除隐藏。本发明还公开了一种用于对较高频带信号和语音解码器执行帧擦除隐藏的装置。避免语音信号质量下降的问题。

39. 发明授权

US08219395B2 Frame compensation method and system 有权
标题翻译：帧补偿方法和系统
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。

40. 发明授权

US07957961B2 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：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。

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