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1. 发明授权

US08214218B2 Method and apparatus for switching speech or audio signals 有权
标题翻译：用于切换语音或音频信号的方法和装置
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。

2. 发明申请

US20120053714A1 SIGNAL DELAY DETECTION METHOD, DETECTION APPARATUS, CODER 审中-公开
标题翻译：信号延迟检测方法，检测装置，编码器
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。

3. 发明授权

US08000968B1 Method and apparatus for switching speech or audio signals 有权
标题翻译：用于切换语音或音频信号的方法和装置
公开(公告)号：US08000968B1
公开(公告)日：2011-08-16
申请号：US13094340
申请日：2011-04-26
申请人： Zexin Liu , Lei Miao , Chan Hu , Wenhai Wu , Yue Lang , Qing Zhang
发明人： Zexin Liu , Lei Miao , Chan 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。

4. 发明授权

US10008210B2 Method, apparatus, and system for encoding and decoding multi-channel signals 有权
公开(公告)号：US10008210B2
公开(公告)日：2018-06-26
申请号：US13572469
申请日：2012-08-10
申请人： Yue Lang , Wenhai Wu , Lei Miao , Zexin Liu
发明人： Yue Lang , Wenhai Wu , Lei Miao , Zexin Liu
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.

5. 发明申请

US20110301962A1 STEREO ENCODING METHOD AND APPARATUS 有权
标题翻译：立体声编码方法和装置
公开(公告)号：US20110301962A1
公开(公告)日：2011-12-08
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。

6. 发明申请

US20110270614A1 Method and Apparatus for Switching Speech or Audio Signals 有权
标题翻译：用于切换语音或音频信号的方法和装置
公开(公告)号：US20110270614A1
公开(公告)日：2011-11-03
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： G10L13/00
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。

7. 发明申请

US20130114817A1 METHOD AND APPARATUS FOR ESTIMATING INTERCHANNEL DELAY OF SOUND SIGNAL 有权
标题翻译：用于估计声信号的信道间延迟的方法和装置
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

8. 发明申请

US20120308017A1 METHOD, APPARATUS, AND SYSTEM FOR ENCODING AND DECODING MULTI-CHANNEL SIGNALS 有权
标题翻译：用于编码和解码多通道信号的方法，装置和系统
公开(公告)号：US20120308017A1
公开(公告)日：2012-12-06
申请号：US13572469
申请日：2012-08-10
申请人： Yue Lang , Wenhai Wu , Lei Miao , Zexin Liu
发明人： Yue Lang , Wenhai Wu , Lei Miao , Zexin Liu
IPC分类号： H04R5/00
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.
摘要翻译：公开了一种用于对多信道信号进行编码和解码的方法，装置和系统。用于编码多声道信号的方法包括：确定与当前帧中需要量化的信道电平差（CLD）相对应的索引的类别; 量化其索引类别与当前帧中的确定的索引类别相同的至少一个频带的CLD，并获得量化数据。

9. 发明申请

US20120016632A1 METHOD FOR ESTIMATING INTER-CHANNEL DELAY AND APPARATUS AND ENCODER THEREOF 有权
标题翻译：估计信道间延时的方法及其编码器
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。

10. 发明授权

US09432784B2 Method and apparatus for estimating interchannel delay of sound signal 有权
标题翻译：用于估计声音信号的通道间延迟的方法和装置
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。

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