公开(公告)号：US10204643B2

公开(公告)日：2019-02-12

申请号：US15476051

申请日：2017-03-31

申请人： OmniSpeech LLC

发明人： Vahid Khanagha

IPC分类号： G10L25/90 ,  G10L25/18 ,  G10L25/06

摘要： A pitch detection method. Such a pitch detection method may use Teager Energy Operator (TEO) and High Passed Filter (HPF) with Pseudo Weigner Ville Transformation (PWVT) to reduce the pitch deletion errors of highly correlated types of noises in a speech signal.

公开(公告)号：US11031029B2

公开(公告)日：2021-06-08

申请号：US16556681

申请日：2019-08-30

申请人： OmniSpeech LLC

发明人： Vahid Khanagha

IPC分类号： G10L25/90 ,  G10L25/18 ,  G10L15/18 ,  G10L25/06 ,  G10L15/22

摘要： A pitch detection method. Such a pitch detection method may have M-PWVT-TEO algorithm to detect a pitch value from a speech signal, apply a partial auto-correlation to a current signal with the pitch value to compensate the delay of the pitch value. Also, the pitch detection method may apply a full auto-correlation to the speech signal where the pitch value is not detected to recover on-sets of the speech signal.

公开(公告)号：US10510363B2

公开(公告)日：2019-12-17

申请号：US15475992

申请日：2017-03-31

申请人： OmniSpeech LLC

发明人： Vahid Khanagha ,  Alton Keel

IPC分类号： G10L25/90 ,  G10L25/18 ,  G10L25/06

摘要： A pitch detection method. Such a pitch detection method may apply Pseudo Weigner Ville Transformation (PWVT) as a spectral representation of speech signal. Also, the pitch detection method may take the median value of each frame of the speech signal as a threshold for making the voicing decision. Additionally, the pitch detection method may take a moving average of PWVT as the threshold for voicing decision.

公开(公告)号：US10403307B2

公开(公告)日：2019-09-03

申请号：US15476074

申请日：2017-03-31

申请人： OmniSpeech LLC

发明人： Vahid Khanagha

IPC分类号： G10L25/90 ,  G10L25/18 ,  G10L25/06

摘要： A pitch detection method. Such a pitch detection method may have M-PWVT-TEO algorithm to detect a pitch value from a speech signal, apply a partial auto-correlation to a current signal with the pitch value to compensate the delay of the pitch value. Also, the pitch detection method may apply a full auto-correlation to the speech signal where the pitch value is not detected to recover on-sets of the speech signal.

公开(公告)号：US10249325B2

公开(公告)日：2019-04-02

申请号：US15476013

申请日：2017-03-31

申请人： OmniSpeech LLC

发明人： Vahid Khanagha

IPC分类号： G10L25/90 ,  G10L25/18 ,  G10L25/06

摘要： A pitch detection method. Such a pitch detection method may use a Teager Energy Operator (TEO) with a Pseudo Weigner Ville Transformation (PWVT) to recover speech from noise and to recover low-frequency information of the speech signal in its detection of a pitch value. Also, the pitch detection method may use the combinatory PWVT and the respective state machine for decision making.

公开(公告)号：US10854220B2

公开(公告)日：2020-12-01

申请号：US16272034

申请日：2019-02-11

申请人： OmniSpeech LLC

发明人： Vahid Khanagha

IPC分类号： G10L25/90 ,  G10L25/18 ,  G10L15/18 ,  G10L25/06 ,  G10L15/22

摘要： A pitch detection method. Such a pitch detection method may use a Teager Energy Operator (TEO) with a Pseudo Weigner Ville Transformation (PWVT) to recover speech from noise and to recover low-frequency information of the speech signal in its detection of a pitch value. Also, the pitch detection method may use the combinatory PWVT and the respective state machine for decision making.

公开(公告)号：US10832701B2

公开(公告)日：2020-11-10

申请号：US16235075

申请日：2018-12-28

申请人： OmniSpeech LLC

发明人： Vahid Khanagha

IPC分类号： G10L25/90 ,  G10L25/18 ,  G10L15/18 ,  G10L25/06 ,  G10L15/22

摘要： A pitch detection method. Such a pitch detection method may use Teager Energy Operator (TEO) and High Passed Filter (HPF) with Pseudo Weigner Ville Transformation (PWVT) to reduce the pitch deletion errors of highly correlated types of noises in a speech signal.