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1. 发明授权

US09978400B2 Method and apparatus for frame loss concealment in transform domain 有权
公开(公告)号：US09978400B2
公开(公告)日：2018-05-22
申请号：US14736499
申请日：2015-06-11
申请人： ZTE CORPORATION
发明人： Xu Guan , Hao Yuan , Mofei Liu , Ke Peng
IPC分类号： G06F17/20 , G10L21/00 , G10L15/00 , G10L15/16 , G10L25/90 , G10L19/005
CPC分类号： G10L25/90 , G10L19/005 , G10L25/09 , G10L2025/906 , G10L15/16 , G10L25/30
摘要： The present document discloses a method and apparatus for compensating for a lost frame in a transform domain, comprising: calculating frequency-domain coefficients of a current lost frame using frequency-domain coefficients of one or more frames prior to the current lost frame, and performing frequency-time transform to obtain an initially compensated signal; and performing waveform adjustment, to obtain a compensated signal. Alternatively, extrapolation is performed for all or part of frequency points of the current lost frame using phases and amplitudes of corresponding frequency points of a plurality of previous frames to obtain phases and amplitudes of the corresponding frequency points of the current lost frame, to obtain frequency-domain coefficients of the corresponding frequency points, and frequency-time transform is performed to obtain a compensated signal. The above methods can be selected through a judgment algorithm to compensate for the current lost frame, thereby achieving a better compensation effect.

2. 发明授权

US09330672B2 Frame loss compensation method and apparatus for voice frame signal 有权
标题翻译：用于语音帧信号的帧丢失补偿方法和装置
公开(公告)号：US09330672B2
公开(公告)日：2016-05-03
申请号：US14353695
申请日：2012-09-29
申请人： ZTE CORPORATION
发明人： Xu Guan , Hao Yuan , Ke Peng , Jiali Li
IPC分类号： G10L19/02 , G10L19/005
CPC分类号： G10L19/02 , G10L19/005 , G10L19/0212
摘要： A frame loss compensation method and apparatus for audio signals are disclosed. The method includes: when a first frame immediately following a correctly received frame is lost, judging a frame type of the first lost frame, and when the first lost frame is a non-multi-harmonic frame, calculating MDCT coefficients of the first lost frame by using MDCT coefficients of one or more frames prior to the first lost frame; obtaining an initially compensated signal of the first lost frame according to the MDCT coefficients of the first lost frame; and performing a first class of waveform adjustment on the initially compensated signal of the first lost frame and taking an adjusted time-domain signal as a time-domain signal of the first lost frame. The apparatus includes a frame type judgment module, an MDCT coefficient acquisition module, an initial compensation signal acquisition module and an adjustment module.
摘要翻译：公开了一种用于音频信号的帧丢失补偿方法和装置。该方法包括：当紧随正确接收到的帧的第一帧丢失时，判断第一丢失帧的帧类型，并且当第一丢帧是非多次谐波帧时，计算第一丢帧的MDCT系数通过在第一丢失帧之前使用一个或多个帧的MDCT系数; 根据第一丢失帧的MDCT系数获得第一丢帧的初始补偿信号; 以及对所述第一丢失帧的初始补偿信号执行第一类波形调整，并且将经调整的时域信号作为所述第一丢帧的时域信号。该装置包括帧类型判断模块，MDCT系数获取模块，初始补偿信号获取模块和调整模块。

3. 发明申请

US20140337039A1 Frame Loss Compensation Method And Apparatus For Voice Frame Signal 有权
标题翻译：帧丢失补偿方法和语音帧信号装置
公开(公告)号：US20140337039A1
公开(公告)日：2014-11-13
申请号：US14353695
申请日：2012-09-29
申请人： ZTE CORPORATION
发明人： Xu Guan , Hao Yuan , Ke Peng , Jiali Li
IPC分类号： G10L19/02
CPC分类号： G10L19/02 , G10L19/005 , G10L19/0212
摘要： A frame loss compensation method and apparatus for audio signals are disclosed. The method includes: when a first frame immediately following a correctly received frame is lost, judging a frame type of the first lost frame, and when the first lost frame is a non-multi-harmonic frame, calculating MDCT coefficients of the first lost frame by using MDCT coefficients of one or more frames prior to the first lost frame; obtaining an initially compensated signal of the first lost frame according to the MDCT coefficients of the first lost frame; and performing a first class of waveform adjustment on the initially compensated signal of the first lost frame and taking an adjusted time-domain signal as a time-domain signal of the first lost frame. The apparatus includes a frame type judgment module, an MDCT coefficient acquisition module, an initial compensation signal acquisition module and an adjustment module.
摘要翻译：公开了一种用于音频信号的帧丢失补偿方法和装置。该方法包括：当紧随正确接收到的帧的第一帧丢失时，判断第一丢失帧的帧类型，并且当第一丢帧是非多次谐波帧时，计算第一丢帧的MDCT系数通过在第一丢失帧之前使用一个或多个帧的MDCT系数; 根据第一丢失帧的MDCT系数获得第一丢帧的初始补偿信号; 以及对所述第一丢失帧的初始补偿信号执行第一类波形调整，并且将经调整的时域信号作为所述第一丢帧的时域信号。该装置包括帧类型判断模块，MDCT系数获取模块，初始补偿信号获取模块和调整模块。

4. 发明授权

US10360927B2 Method and apparatus for frame loss concealment in transform domain 有权
公开(公告)号：US10360927B2
公开(公告)日：2019-07-23
申请号：US15926582
申请日：2018-03-20
申请人： ZTE CORPORATION
发明人： Xu Guan , Hao Yuan , Mofei Liu , Ke Peng
IPC分类号： G10L25/90 , G10L19/005 , G10L25/09
摘要： The present document discloses a method and apparatus for compensating for a lost frame in a transform domain, comprising: calculating frequency-domain coefficients of a current lost frame using frequency-domain coefficients of one or more frames prior to the current lost frame, and performing frequency-time transform to obtain an initially compensated signal; and performing waveform adjustment, to obtain a compensated signal. Alternatively, extrapolation is performed for all or part of frequency points of the current lost frame using phases and amplitudes of corresponding frequency points of a plurality of previous frames to obtain phases and amplitudes of the corresponding frequency points of the current lost frame, to obtain frequency-domain coefficients of the corresponding frequency points, and frequency-time transform is performed to obtain a compensated signal. The above methods can be selected through a judgment algorithm to compensate for the current lost frame, thereby achieving a better compensation effect.

5. 发明申请

US20190096430A1 Method and Apparatus for Frame Loss Concealment in Transform Domain 审中-公开
公开(公告)号：US20190096430A1
公开(公告)日：2019-03-28
申请号：US15926582
申请日：2018-03-20
申请人： ZTE CORPORATION
发明人： Xu Guan , Hao Yuan , Mofei Liu , Ke Peng
IPC分类号： G10L25/90 , G10L15/16 , G10L19/005 , G10L25/30 , G10L25/09
CPC分类号： G10L25/90 , G10L19/005 , G10L25/09 , G10L2025/906 , G10L15/16 , G10L25/30
摘要： The present document discloses a method and apparatus for compensating for a lost frame in a transform domain, comprising: calculating frequency-domain coefficients of a current lost frame using frequency-domain coefficients of one or more frames prior to the current lost frame, and performing frequency-time transform to obtain an initially compensated signal; and performing waveform adjustment, to obtain a compensated signal. Alternatively, extrapolation is performed for all or part of frequency points of the current lost frame using phases and amplitudes of corresponding frequency points of a plurality of previous frames to obtain phases and amplitudes of the corresponding frequency points of the current lost frame, to obtain frequency-domain coefficients of the corresponding frequency points, and frequency-time transform is performed to obtain a compensated signal. The above methods can be selected through a judgment algorithm to compensate for the current lost frame, thereby achieving a better compensation effect.

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