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公开(公告)号：US11804235B2
公开(公告)日：2023-10-31
申请号：US17169035
申请日：2021-02-05
发明人： Junnan Wu , Yangfei Xu , Jun Ning , Yuzhou Gong , Nan Zhou
IPC分类号： G10L21/0232 , G10L25/18 , G10L25/21 , G10L25/51 , H04M3/00 , H04M9/08 , G10L21/0208
CPC分类号： G10L21/0232 , G10L25/18 , G10L25/21 , G10L25/51 , H04M3/002 , H04M9/082 , G10L2021/02082
摘要： A double-talk state detection method includes: calculating an energy ratio between a first energy of an error signal in each sub-band of M sub-bands and a second energy of a filtered signal in the same sub-band as the error signal, thereby obtaining M energy ratios, where the error signal is a difference between an input signal collected by a microphone and the filtered signal, the filtered signal is a signal obtained after performing filtering process on a reference signal, and M is a positive integer; performing a first smoothing processing on the M energy ratios to obtain M first energy smoothing ratios, and performing a second smoothing processing on the M first energy smoothing ratios to obtain M second energy smoothing ratios; performing double-talk state detection based on the M first energy smoothing ratios and the M second energy smoothing ratios to determine a state of the input signal.
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公开(公告)号：US20210264935A1
公开(公告)日：2021-08-26
申请号：US17169035
申请日：2021-02-05
发明人： Junnan Wu , Yangfei Xu , Jun Ning , Yuzhou Gong , Nan Zhou
IPC分类号： G10L21/0232 , G10L25/21 , G10L25/18 , G10L25/51
摘要： A double-talk state detection method includes: calculating an energy ratio between a first energy of an error signal in each sub-band of M sub-bands and a second energy of a filtered signal in the same sub-band as the error signal, thereby obtaining M energy ratios, where the error signal is a difference between an input signal collected by a microphone and the filtered signal, the filtered signal is a signal obtained after performing filtering process on a reference signal, and M is a positive integer; performing a first smoothing processing on the M energy ratios to obtain M first energy smoothing ratios, and performing a second smoothing processing on the M first energy smoothing ratios to obtain M second energy smoothing ratios; performing double-talk state detection based on the M first energy smoothing ratios and the M second energy smoothing ratios to determine a state of the input signal.
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