公开(公告)号：US09888330B1

公开(公告)日：2018-02-06

申请号：US15222074

申请日：2016-07-28

申请人： GetGo, Inc.

发明人： Patrick Vicinus ,  Björn Völcker

IPC分类号： H04M9/08 ,  H04R29/00 ,  H04R3/00 ,  G10L21/0208 ,  G01H7/00

CPC分类号： H04R29/001 ,  G01H7/00 ,  G10L21/0208 ,  G10L2021/02082 ,  H04M9/082 ,  H04R3/00 ,  H04R3/02

摘要： One or more delay estimators are used to detect failure in a signal processing component, such as an acoustic echo canceller. A first delay estimator is used to generate i) an estimated post-processing delay between when a known audio signal was conveyed to a loudspeaker, and when a portion of the processed audio signal that includes the known audio signal was output from the signal processing component, and ii) a confidence level for the estimated post-processing delay. A failure of the signal processing component may be detected in response to the estimated post-processing delay exceeding a threshold. A second delay estimator may also be used to generate an estimated pre-processing delay and a confidence level for the estimated pre-processing delay for comparison to the estimated post-processing delay and confidence level for the estimated post-processing delay in order to provide further failure detection accuracy and specificity.

公开(公告)号：US20180035223A1

公开(公告)日：2018-02-01

申请号：US15222074

申请日：2016-07-28

申请人： GetGo, Inc.

发明人： Patrick Vicinus ,  Björn Völcker

IPC分类号： H04R29/00 ,  G10L21/0208 ,  G01H7/00 ,  H04R3/00

CPC分类号： H04R29/001 ,  G01H7/00 ,  G10L21/0208 ,  G10L2021/02082 ,  H04M9/082 ,  H04R3/00 ,  H04R3/02

摘要： One or more delay estimators are used to detect failure in a signal processing component, such as an acoustic echo canceller. A first delay estimator is used to generate i) an estimated post-processing delay between when a known audio signal was conveyed to a loudspeaker, and when a portion of the processed audio signal that includes the known audio signal was output from the signal processing component, and ii) a confidence level for the estimated post-processing delay. A failure of the signal processing component may be detected in response to the estimated post-processing delay exceeding a threshold. A second delay estimator may also be used to generate an estimated pre-processing delay and a confidence level for the estimated pre-processing delay for comparison to the estimated post-processing delay and confidence level for the estimated post-processing delay in order to provide further failure detection accuracy and specificity.