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：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

IPC: G10L25/78 ,  G01H1/12 ,  G10L21/0208 ,  G10L25/06 ,  G10L25/84 ,  G10L25/90 ,  G10L25/93

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：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.

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