公开(公告)号：US09432784B2

公开(公告)日：2016-08-30

申请号：US13730724

申请日：2012-12-28

申请人： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  Zexin Liu

发明人： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  Zexin Liu

IPC分类号： H04R1/32 ,  H04R29/00 ,  G10L19/008

CPC分类号： H04R29/00 ,  G10L19/008 ,  H04S2420/03

摘要： A method and an apparatus for estimating an interchannel delay of a sound signal are, related to the communication field and capable of realizing a stable sound field in a crosstalk. The method includes calculating an error between an actual interchannel phase difference and a predicted interchannel phase difference of a sound signal. The predicted interchannel phase difference is predicted according to a predetermined interchannel delay of the sound signal. The method also includes determining whether the sound signal is a sound signal in a crosstalk according to the error. The method further includes, if the sound signal is a sound signal in the crosstalk, setting an interchannel delay corresponding to the sound signal to a fixed value. The apparatus is configured to perform the method.

摘要翻译： 用于估计声音信号的信道间延迟的方法和装置与通信领域有关，并且能够实现串扰中的稳定的声场。 该方法包括计算实际的信道间相位差和声音信号的预测通道间相位差之间的误差。 预测的通道间相位差根据声音信号的预定的通道间延迟来预测。 该方法还包括根据误差确定声音信号是否是串扰中的声音信号。 该方法还包括如果声音信号是串扰中的声音信号，则将与声音信号相对应的通道间延迟设置为固定值。 该装置被配置为执行该方法。

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。

公开(公告)号：US08489406B2

公开(公告)日：2013-07-16

申请号：US13208460

申请日：2011-08-12

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： G10L19/00

CPC分类号： G10L19/008 ,  H04S1/007 ,  H04S2420/03

摘要： A stereo encoding method and apparatus are provided, so as to reduce distortion caused by delay adjustment. The stereo encoding method includes: extracting a current interchannel delay of a stereo signal and a previous delay adjacent to the current interchannel delay; performing adjustment frame judgment according to characteristics of the current stereo signal when the current delay and the previous delay are different; and performing delay adjustment on the stereo signal by using the current interchannel delay if it is judged that a frame where the current delay occurs is an adjustment frame.

摘要翻译： 提供立体声编码方法和装置，以便减少由延迟调整引起的失真。 立体声编码方法包括：提取立体声信号的当前通道间延迟和与当前通道间延迟相邻的先前延迟; 当当前延迟和先前的延迟不同时，根据当前立体声信号的特性进行调整帧判断; 并且如果判断当前延迟发生的帧是调整帧，则通过使用当前的信道间延迟来对立体声信号执行延迟调整。

公开(公告)号：US08468025B2

公开(公告)日：2013-06-18

申请号：US13172509

申请日：2011-06-29

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

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

IPC分类号： G10L19/00

CPC分类号： G10L19/0208 ,  G10L19/26 ,  G10L21/0208

摘要： A method and an apparatus for processing a signal are provided. The method includes: obtaining an energy average value of each sub-band for a current frame frequency-domain signal; obtaining a current frame modification coefficient of each sub-band for the current frame frequency-domain signal according to a spectral envelope and the energy average value of each sub-band; obtaining a weighted modification coefficient of each sub-band for the current frame frequency-domain signal by using the current frame modification coefficient and a relevant frame modification coefficient; and modifying the spectral envelope of each sub-band for the current frame frequency-domain signal by using the weighted modification coefficient.

摘要翻译： 提供了一种用于处理信号的方法和装置。 该方法包括：获得当前帧频域信号的每个子带的能量平均值; 根据每个子带的频谱包络和能量平均值，获取当前帧频域信号的每个子带的当前帧修改系数; 通过使用当前帧修正系数和相关帧修正系数，获得当前帧频域信号的每个子带的加权修正系数; 以及通过使用加权修正系数来修改当前帧频域信号的每个子带的频谱包络。

公开(公告)号：US08417473B2

公开(公告)日：2013-04-09

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： G01R25/04

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：US20110286549A1

公开(公告)日：2011-11-24

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： H04L27/00

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：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：US08600739B2

公开(公告)日：2013-12-03

申请号：US12481060

申请日：2009-06-09

申请人： Dejun Zhang ,  Liang Zhang ,  Yue Lang ,  Tinghong Wang ,  Lixiong Li ,  Wenhai Wu ,  Wei Xiao ,  Fuwei Ma ,  Zexin Liu

发明人： Dejun Zhang ,  Liang Zhang ,  Yue Lang ,  Tinghong Wang ,  Lixiong Li ,  Wenhai Wu ,  Wei Xiao ,  Fuwei Ma ,  Zexin Liu

IPC分类号： G10L19/24

CPC分类号： G10L19/24 ,  G10L2019/0013

摘要： A coding method is adapted to select different codebook search algorithms according to varied types of input signals. An encoder using the coding method is also provided. As appropriate search algorithms may be selected according to all possible structural features of the input signals, certain types of signals for which satisfactory results may be obtained through simple computations may match with search algorithms suitable for these signal types and having low computation complexities, so as to achieve better performance with fewer system resources. Meanwhile, other types of signals that need complicated computations may be processed by more sophisticated search algorithms, thereby ensuring the coding quality.

摘要翻译： 一种编码方法适用于根据不同类型的输入信号选择不同的码本搜索算法。 还提供了使用编码方法的编码器。 可以根据输入信号的所有可能的结构特征来选择合适的搜索算法，通过简单的计算可​​获得令人满意的结果的某些类型的信号可以与适合于这些信号类型的搜索算法匹配并具有低的计算复杂度，因此 以更少的系统资源实现更好的性能。 同时，需要复杂计算的其他类型的信号可以通过更复杂的搜索算法来处理，从而确保编码质量。

公开(公告)号：US20130114817A1

公开(公告)日：2013-05-09

申请号：US13730724

申请日：2012-12-28

申请人： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  Zexin Liu

发明人： Wenhai Wu ,  Lei Miao ,  Yue Lang ,  Zexin Liu

IPC分类号： H04R29/00

CPC分类号： H04R29/00 ,  G10L19/008 ,  H04S2420/03

摘要： A method and an apparatus for estimating an interchannel delay of a sound signal are disclosed, related to the communication field and capable of realizing a stable sound field in a crosstalk. The method includes: calculating an error between an actual interchannel phase difference and a predicted interchannel phase difference of a sound signal, where the predicted interchannel phase difference is predicted according to a predetermined interchannel delay of the sound signal; determining whether the sound signal is a sound signal in a crosstalk according to the error; and if the sound signal is a sound signal in the crosstalk, setting an interchannel delay corresponding to the sound signal to a fixed value

摘要翻译： 公开了一种用于估计声音信号的通道间延迟的方法和装置，涉及通信领域并且能够在串扰中实现稳定的声场。 该方法包括：根据声音信号的预定的通道间延迟来计算实际的信道间相位差和声音信号的预测通道间相位差之间的误差，其中预测的信道间相位差被预测; 根据误差确定声音信号是否是串扰中的声音信号; 并且如果声音信号是串音中的声音信号，则将与声音信号相对应的通道间延迟设置为固定值

公开(公告)号：US08436754B2

公开(公告)日：2013-05-07

申请号：US13086780

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： H03M7/38

CPC分类号： G10L19/24 ,  G10L19/032

摘要： The present invention relates to information processing technologies and discloses an encoding and decoding method and device to solve the poor decoding quality problem. The technical solution of the present invention 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： 本发明涉及信息处理技术，并且公开了一种解码解码质量问题的解码方法和装置。 本发明的技术方案包括：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。