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1.发明授权Coding method, encoder, and computer readable medium that uses one of multiple codebooks based on a type of input signal 有权编码方法，编码器和计算机可读介质，其基于输入信号的类型使用多个码本之一公开(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。
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2.发明申请公开(公告)号：US20130114817A1
公开(公告)日：2013-05-09
申请号：US13730724
申请日：2012-12-28
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
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公开(公告)号：US10008210B2
公开(公告)日：2018-06-26
申请号：US13572469
申请日：2012-08-10
IPC分类号： H04R5/00 , G10L19/008
CPC分类号： G10L19/008
摘要： A method, an apparatus, and a system for encoding and decoding multi-channel signals are disclosed. The method for encoding multi-channel signals includes: determining the category of an index corresponding to a channel level difference (CLD) which needs to be quantized in a current frame; quantizing the CLD of at least one frequency band whose index category is the same as the determined category of the index in the current frame, and obtaining quantized data.
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公开(公告)号：US20110317843A1
公开(公告)日：2011-12-29
申请号：US13224806
申请日：2011-09-02
IPC分类号： H04R5/00
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，并且在波形上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。
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公开(公告)号：US20110301962A1
公开(公告)日：2011-12-08
申请号：US13208460
申请日：2011-08-12
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。
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公开(公告)号：US20110270614A1
公开(公告)日：2011-11-03
申请号：US13162309
申请日：2011-06-16
IPC分类号： G10L13/00
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。
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公开(公告)号：US08214218B2
公开(公告)日：2012-07-03
申请号：US13162309
申请日：2011-06-16
IPC分类号： G10L19/00
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。
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公开(公告)号：US20120053714A1
公开(公告)日：2012-03-01
申请号：US13290809
申请日：2011-11-07
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。
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公开(公告)号：US08000968B1
公开(公告)日：2011-08-16
申请号：US13094340
申请日：2011-04-26
IPC分类号： G10L19/00
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。
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10.发明授权公开(公告)号：US09432784B2
公开(公告)日：2016-08-30
申请号：US13730724
申请日：2012-12-28
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。
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