-
公开(公告)号：CA2798282A1
公开(公告)日：2011-11-10
申请号：CA2798282
申请日：2011-05-03
Applicant: ALIPHCOM INC
Inventor： PETIT NICOLAS , BURNETT GREGORY , GOERTZ MICHAEL
IPC: G10L21/02 , G10L21/0208 , G10L21/0216 , G10L25/78
Abstract: Systems and methods to reduce the negative impact of wind on an electronic system include use of a first detector that receives a first signal and a second detector that receives a second signal. A voice activity detector (VAD) coupled to the first detector generates a VAD signal when the first signal corresponds to voiced speech. A wind detector coupled to the second detector correlates signals received at the second detector and derives from the correlation wind metrics that characterize wind noise that is acoustic disturbance corresponding to at least one of air flow and air pressure in the second detector. The wind detector controls a configuration of the second detector according to the wind metrics. The wind detector uses the wind metrics to dynamically control mixing of the first signal and the second signal to generate an output signal for transmission.
-
2.发明专利
公开(公告)号：CA2798512A1
公开(公告)日：2011-11-10
申请号：CA2798512
申请日：2011-05-03
Applicant: ALIPHCOM INC
Inventor： JING ZHINIAN , PETIT NICOLAS , BURNETT GREGORY C
Abstract: A voice activity detector (VAD) combines the use of an acoustic VAD and a vibration sensor VAD as appropriate to the conditions a host device is operated. The VAD includes a first detector receiving a first signal and a second detector receiving a second signal. The VAD includes a first VAD component coupled to the first and second detectors. The first VAD component determines that the first signal corresponds to voiced speech when energy resulting from at least one operation on the first signal exceeds a first threshold. The VAD includes a second VAD component coupled to the second detector. The second VAD component determines that the second signal corresponds to voiced speech when a ratio of a second parameter corresponding to the second signal and a first parameter corresponding to the first signal exceeds a second threshold.
-
Patent Agency Ranking
公开(公告)号：CA2741652A1
公开(公告)日：2010-04-29
申请号：CA2741652
申请日：2009-10-26
Applicant: ALIPHCOM INC
Inventor： PETIT NICOLAS , BURNETT GREGORY , JING ZHINIAN
IPC: H04R3/04
Abstract: Acoustic Voice Activity Detection (AVAD) methods and systems are described. The AVAD methods and systems, including corresponding algorithms or programs, use microphones to generate virtual directional microphones which have very similar noise responses and very dissimilar speech responses. The ratio of the energies of the virtual microphones is then calculated over a given window size and the ratio can then be used with a variety of methods to generate a VAD signal. The virtual microphones can be constructed using either an adaptive or a fixed filter.
-
4.发明专利
公开(公告)号：AU2011248283A1
公开(公告)日：2012-11-29
申请号：AU2011248283
申请日：2011-05-03
Applicant: ALIPHCOM INC
Inventor： JING ZHINIAN , PETIT NICOLAS , BURNETT GREGORY C
IPC: H04R29/00
Abstract: A voice activity detector (VAD) combines the use of an acoustic VAD and a vibration sensor VAD as appropriate to the conditions a host device is operated. The VAD includes a first detector receiving a first signal and a second detector receiving a second signal. The VAD includes a first VAD component coupled to the first and second detectors. The first VAD component determines that the first signal corresponds to voiced speech when energy resulting from at least one operation on the first signal exceeds a first threshold. The VAD includes a second VAD component coupled to the second detector. The second VAD component determines that the second signal corresponds to voiced speech when a ratio of a second parameter corresponding to the second signal and a first parameter corresponding to the first signal exceeds a second threshold.
-
公开(公告)号：AU2011248297A1
公开(公告)日：2012-11-29
申请号：AU2011248297
申请日：2011-05-03
Applicant: ALIPHCOM INC
Inventor： PETIT NICOLAS , BURNETT GREGORY , GOERTZ MICHAEL
IPC: G10L21/02 , G10L21/0208 , G10L21/0216 , G10L25/78
Abstract: Systems and methods to reduce the negative impact of wind on an electronic system include use of a first detector that receives a first signal and a second detector that receives a second signal. A voice activity detector (VAD) coupled to the first detector generates a VAD signal when the first signal corresponds to voiced speech. A wind detector coupled to the second detector correlates signals received at the second detector and derives from the correlation wind metrics that characterize wind noise that is acoustic disturbance corresponding to at least one of air flow and air pressure in the second detector. The wind detector controls a configuration of the second detector according to the wind metrics. The wind detector uses the wind metrics to dynamically control mixing of the first signal and the second signal to generate an output signal for transmission.
-
公开(公告)号：AU2016202314A1
公开(公告)日：2016-05-05
申请号：AU2016202314
申请日：2016-04-13
Applicant: ALIPHCOM INC
Inventor： PETIT NICOLAS , BURNETT GREGORY , JING ZHINIAN
IPC: H04R3/00
Abstract: H:\kmh\Interwoven\NRPortbl\DCC\KMH\9978276_l.docx-13/04/2016 Acoustic Voice Activity Detection (AVAD) methods and systems are described. The AVAD methods and systems, including corresponding algorithms or programs, use microphones to generate virtual directional microphones which have very similar noise responses and very dissimilar speech responses. The ratio of the energies of the virtual microphones is then calculated over a given window size and the ratio can then be used with a variety of methods to generate a VAD signal. The virtual microphones can be constructed using either an adaptive or a fixed filter. Fig. 3 Calibration filter Adaptive filter Delay filter a(z) - (z
-
公开(公告)号：AU2009308442A1
公开(公告)日：2010-04-29
申请号：AU2009308442
申请日：2009-10-26
Applicant: ALIPHCOM INC
Inventor： PETIT NICOLAS , BURNETT GREGORY , JING ZHINIAN
IPC: H04R3/00
-
-
-
-
-
-
Search Results
7
records
(took 0.019 seconds)
