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。

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。

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：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：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：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：US20120016632A1

公开(公告)日：2012-01-19

申请号：US13245303

申请日：2011-09-26

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

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

IPC分类号： G06F15/00

CPC分类号： H04S1/007 ,  G10L19/008 ,  G10L25/06 ,  H04S2400/09 ,  H04S2420/03

摘要： A method for estimating inter-channel delay and an apparatus for estimating inter-channel delay and an encoder are provided by the embodiments of the present invention. The method includes: obtaining signal sound field information from a cross-correlation function and a cumulative cross-correlation function of synthetic signals of left and right sound channels respectively; obtaining adjustment information of the cumulative cross-correlation function according to the sound field information that is respectively obtained; adjusting the cumulative cross-correlation function by using the adjustment information, so as to obtain the adjusted cumulative cross-correlation function; and determining a time corresponding to a maximum value in the adjusted cumulative cross-correlation function as an inter-channel delay. Therefore, the delay between the signals of the left and right sound channels can be estimated correctly, so as to improve the stability of the synthetic stereo sound field.

摘要翻译： 通过本发明的实施例提供了一种用于估计信道间延迟的方法和用于估计信道间延迟的装置和编码器。 该方法包括：分别从互相关函数获得信号声场信息和左声道和右声道的合成信号的累积互相关函数; 根据分别获得的声场信息获得累积互相关函数的调整信息; 通过使用调整信息来调整累积互相关函数，以获得经调整的累积互相关函数; 并且将调整后的累积互相关函数中的与最大值对应的时间确定为信道间延迟。 因此，可以正确地估计左声道和右声道的信号之间的延迟，从而提高合成立体声场的稳定性。

公开(公告)号：US09064488B2

公开(公告)日：2015-06-23

申请号：US13224806

申请日：2011-09-02

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

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

IPC分类号： H04R5/00 ,  G10L19/008 ,  H04S1/00 ,  G10L19/02

CPC分类号： G10L19/008 ,  G10L19/0204 ,  H04S1/007

摘要： A stereo encoding method, a stereo encoding device, and an encoder are provided. The stereo encoding method includes: obtaining a left channel energy relation coefficient and a right channel energy relation coefficient; obtaining a left energy sum and a right energy sum respectively; performing cross correlation between sub-bands of a first monophonic signal at a wave trough and sub-bands of the left channel signal according to the left channel energy relation coefficient, and performing cross correlation between sub-bands of the first monophonic signal at the wave trough and sub-bands of the right channel signal according to the right channel energy relation coefficient; obtaining a scaling factor by using the left energy sum, the right energy sum, and cross correlation results; and encoding the stereo left and right channel signals according to the scaling factor.

摘要翻译： 提供立体声编码方法，立体声编码装置和编码器。 立体声编码方法包括：获得左声道能量关系系数和右声道能量关系系数; 分别获得左边的能量和和能量的和; 根据左声道能量关系系数，在波谷处的第一单声道信号的子带与左声道信号的子带之间进行互相关，并且在波形处执行第一单声道信号的子带之间的互相关 根据右声道能量关系系数，右声道信号的波谷和子带; 通过使用左边的能量和，正确的能量和和互相关的结果获得比例因子; 并根据缩放因子对立体声左右声道信号进行编码。