公开(公告)号：US08063809B2

公开(公告)日：2011-11-22

申请号：US13172652

申请日：2011-06-29

申请人： Zexin Liu ,  Longyin Chen ,  Lei Miao ,  Chen Hu ,  Wei Xiao ,  Herve Marcel Taddei ,  Qing Zhang

发明人： Zexin Liu ,  Longyin Chen ,  Lei Miao ,  Chen Hu ,  Wei Xiao ,  Herve Marcel Taddei ,  Qing Zhang

IPC分类号： H03M1/12

CPC分类号： G10L19/025

摘要： A transient signal encoding method and device, decoding method and device, and processing system, where the transient signal encoding method includes: obtaining a reference sub-frame where a maximal time envelope having a maximal amplitude value is located from time envelopes of all sub-frames of an input transient signal; adjusting an amplitude value of the time envelope of each sub-frame before the reference sub-frame in such a way that a first difference is greater than a preset first threshold, in which the first difference is a difference between the amplitude value of the time envelope of each sub-frame before the reference sub-frame and the amplitude value of the maximal time envelope; and writing the adjusted time envelope into bitstream.

摘要翻译： 一种瞬态信号编码方法和装置，解码方法和装置以及处理系统，其中瞬态信号编码方法包括：获得参考子帧，其中具有最大振幅值的最大时间包络位于所有子帧的时间包络上， 输入瞬态信号的帧; 在所述参考子帧之前调整每个子帧的时间包络的幅度值，使得所述第一差值大于预设的第一阈值，其中所述第一差值是所述时间的振幅值 参考子帧之前的每个子帧的包络和最大时间包络的振幅值; 并将经调整的时间包络写入比特流。

公开(公告)号：US08965758B2

公开(公告)日：2015-02-24

申请号：US13248725

申请日：2011-09-29

申请人： Longyin Chen ,  Lei Miao ,  Chen Hu ,  Zexin Liu ,  Qing Zhang

发明人： Longyin Chen ,  Lei Miao ,  Chen Hu ,  Zexin Liu ,  Qing Zhang

IPC分类号： G10L19/24 ,  G10L21/0264 ,  G10L21/02 ,  G10L21/038

CPC分类号： G10L21/0205 ,  G10L19/24 ,  G10L21/0364 ,  G10L21/038

摘要： In the field of audio encoding/decoding technologies, a signal de-noising method is provided. The method includes: selecting, according to a degree of inter-frame correlation of a frame where a spectral coefficient to be adjusted resides, at least two spectral coefficients having high correlation with the spectral coefficient to be adjusted; performing weighting on the at least two selected spectral coefficients and the spectral coefficient to be adjusted to acquire a predicted value of the spectral coefficient to be adjusted; and adjusting a spectrum of a decoded signal by using the acquired predicted value, and outputting the adjusted decoded signal. A signal de-noising apparatus corresponding to the signal de-noising method and an audio decoding system using the signal de-noising apparatus are also provided.

摘要翻译： 在音频编码/解码技术领域，提供了信号去噪方法。 该方法包括：根据要调整的频谱系数的帧的帧间相关度，选择与要调整的频谱系数高度相关的至少两个频谱系数; 对所述至少两个所选频谱系数执行加权，以及对所述频谱系数进行调整，以获取要调整的频谱系数的预测值; 以及通过使用获取的预测值来调整解码信号的频谱，并输出调整后的解码信号。 还提供了与信号去噪方法相对应的信号去噪装置和使用信号去噪装置的音频解码系统。

公开(公告)号：US08380526B2

公开(公告)日：2013-02-19

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

IPC分类号： G10L19/00 ,  G10L19/12

CPC分类号： G10L21/00 ,  G10L19/24

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。

公开(公告)号：US08214218B2

公开(公告)日：2012-07-03

申请号：US13162309

申请日：2011-06-16

申请人： Zexin Liu ,  Lei Miao ,  Chen Hu ,  Wenhai Wu ,  Yue Lang ,  Qing Zhang

发明人： Zexin Liu ,  Lei Miao ,  Chen Hu ,  Wenhai Wu ,  Yue Lang ,  Qing Zhang

IPC分类号： G10L19/00

CPC分类号： G10L19/24 ,  G10L19/22 ,  G10L19/26

摘要： A method and an apparatus for switching speech or audio signals, wherein the method for switching speech or audio signals includes when switching of a speech or audio, weighting a first high frequency band signal of a current frame of speech or audio signal and a second high frequency band signal of the previous M frame of speech or audio signals to obtain a processed first high frequency band signal, where M is greater than or equal to 1, and synthesizing the processed first high frequency band signal and a first low frequency band signal of the current frame of speech or audio signal into a wide frequency band signal. In this way, speech or audio signals with different bandwidths can be smoothly switched, thus improving the quality of audio signals received by a user.

摘要翻译： 一种用于切换语音或音频信号的方法和装置，其中用于切换语音或音频信号的方法包括：当切换语音或音频时，加权当前语音或音频信号帧的第一高频带信号， 先前的M帧语音或音频信号的频带信号，以获得经处理的第一高频带信号，其中M大于或等于1，并且合成经处理的第一高频带信号和第一低频带信号 将当前的语音帧或音频信号转换成宽频带信号。 以这种方式，可以平滑地切换具有不同带宽的语音或音频信号，从而提高用户接收的音频信号的质量。

公开(公告)号：US08140343B2

公开(公告)日：2012-03-20

申请号：US13210127

申请日：2011-08-15

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

IPC分类号： G10L19/00 ,  G10L21/04

CPC分类号： G10L21/00 ,  G10L19/24

摘要： A method, device and system for signal encoding and decoding, the method comprising: 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： 一种用于信号编码和解码的方法，装置和系统，所述方法包括：对核心层信号进行编码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。

公开(公告)号：US20120053714A1

公开(公告)日：2012-03-01

申请号：US13290809

申请日：2011-11-07

申请人： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  Chen Hu ,  Zexin Liu ,  Qing Zhang

发明人： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  Chen Hu ,  Zexin Liu ,  Qing Zhang

IPC分类号： G06F17/00

CPC分类号： H04S1/007 ,  H04S2420/03

摘要： A signal delay detection method, a detection apparatus, and a coder are disclosed to improve accuracy of detecting the signal delay. The method includes: obtaining a first cumulative cross-correlation function according to cross-correlation functions between channel signals; determining a first delay between the channel signals corresponding to the first cumulative cross-correlation function; adjusting a second cumulative cross-correlation function according to a relationship between the first delay and a second delay that exist between the channel signals, where the second delay is obtained at time of adjusting the second cumulative cross-correlation function and an initial value of the second delay is determined according to an initial value of a second weighting coefficient of the second cumulative cross-correlation function; and determining the second delay corresponding to the adjusted second cumulative cross-correlation function as a delay detected between the channel signals.

摘要翻译： 公开了一种信号延迟检测方法，检测装置和编码器，以提高检测信号延迟的精度。 该方法包括：根据信道信号之间的互相关函数获得第一累积互相关函数; 确定对应于第一累积互相关函数的信道信号之间的第一延迟; 根据存在于通道信号之间的第一延迟和第二延迟之间的关系来调整第二累积互相关函数，其中在调整第二累积互相关函数时获得第二延迟和第二累积互相关函数的初始值 根据第二累积互相关函数的第二加权系数的初始值来确定第二延迟; 以及确定与所调整的第二累积互相关函数相对应的第二延迟作为在所述信道信号之间检测到的延迟。

公开(公告)号：US08103515B2

公开(公告)日：2012-01-24

申请号：US13160115

申请日：2011-06-14

申请人： Longyin Chen ,  Zexin Liu ,  Lei Miao ,  Chen Hu ,  Wei Xiao ,  Marcel Taddei Herve ,  Qing Zhang

发明人： Longyin Chen ,  Zexin Liu ,  Lei Miao ,  Chen Hu ,  Wei Xiao ,  Marcel Taddei Herve ,  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。

公开(公告)号：US08326608B2

公开(公告)日：2012-12-04

申请号：US13359339

申请日：2012-01-26

申请人： Chen Hu ,  Lei Miao ,  Zexin Liu ,  Longyin Chen ,  Herve Marcel Taddei ,  Qing Zhang

发明人： Chen Hu ,  Lei Miao ,  Zexin Liu ,  Longyin Chen ,  Herve Marcel Taddei ,  Qing Zhang

IPC分类号： G10L21/00

CPC分类号： G10L19/173 ,  G10L19/24

摘要： A method, a device, and a system for transcoding between two embedded codecs are disclosed. The method includes: delaying a first encoded stream in input streams for integer number of frames, where the first encoded stream includes a stream of at least one extension layer in the input streams obtained after input signals are encoded by using a first codec; and using the first codec to decode other encoded streams in the input streams to obtain the first decoded signal; and performing delay aligning and adjusting to obtain an adjusted signal so as to reduce the transcoding complexity and enhance quality of the transcoded signals.

摘要翻译： 公开了一种用于在两个嵌入式编解码器之间进行代码转换的方法，设备和系统。 该方法包括：在整数帧的输入流中延迟第一编码流，其中第一编码流包括在通过使用第一编解码器对输入信号进行编码之后获得的输入流中的至少一个扩展层的流; 以及使用所述第一编解码器来解码所述输入流中的其他编码流以获得所述第一解码信号; 并执行延迟对准和调整以获得经调整的信号，以便降低代码转换复杂度并提高转码信号的质量。

公开(公告)号：US20120136669A1

公开(公告)日：2012-05-31

申请号：US13359339

申请日：2012-01-26

申请人： Chen Hu ,  Lei Miao ,  Zexin Liu ,  Longyin Chen ,  Herve Marcel Taddei ,  Qing Zhang

发明人： Chen Hu ,  Lei Miao ,  Zexin Liu ,  Longyin Chen ,  Herve Marcel Taddei ,  Qing Zhang

IPC分类号： G10L19/00

CPC分类号： G10L19/173 ,  G10L19/24

摘要： A method, a device, and a system for transcoding between two embedded codecs are disclosed. The method includes: delaying a first encoded stream in input streams for integer number of frames, where the first encoded stream includes a stream of at least one extension layer in the input streams obtained after input signals are encoded by using a first codec; and using the first codec to decode other encoded streams in the input streams to obtain the first decoded signal; and performing delay aligning and adjusting to obtain an adjusted signal so as to reduce the transcoding complexity and enhance quality of the transcoded signals.

摘要翻译： 公开了一种用于在两个嵌入式编解码器之间进行代码转换的方法，设备和系统。 该方法包括：在整数帧的输入流中延迟第一编码流，其中第一编码流包括在通过使用第一编解码器对输入信号进行编码之后获得的输入流中的至少一个扩展层的流; 以及使用所述第一编解码器来解码所述输入流中的其他编码流以获得所述第一解码信号; 并执行延迟对准和调整以获得经调整的信号，以便降低代码转换复杂度并提高转码信号的质量。

公开(公告)号：US08134484B2

公开(公告)日：2012-03-13

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： H03M7/34

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。