VOICE DETECTION DEVICE, VOICE DETECTION METHOD, AND VOICE DETECTION PROGRAM

WIPO Patent Application WO/2011/077924

A1

Provided are a voice detection device, a voice detection method, and a voice detection program for performing voice section detection with high accuracy even under a noise environment. A feature amount calculation unit (301) calculates a feature amount for each frame. A voice/non-voice judgment unit (302) compares the feature amount calculated and a voice detection threshold value with each other, thereby judging whether a section is a voice section or a non-voice section. A long section feature amount calculation unit (303) calculates a long section feature amount, which is the feature amount of the voice section or the non-voice section, on the basis of a statistic value of the feature amounts of a plurality of frames. A threshold value update unit (304) uses the long section feature amount calculated, to calculate a non-voice probability, which is such a probability that the voice section and the non-voice section are a section to which a signal based on non-voice is input, and update the voice detection threshold value on the basis of the non-voice probability calculated.

WO/2008/082564	NETWORK MONITORING
JP2003218745	NOISE CANCELLER AND VOICE DETECTING DEVICE
JP4847883	Audio playback device

TANAKA DAISUKE (JP)
ARAKAWA TAKAYUKI (JP)
HANAZAWA KEN (JP)
OSADA SEIYA (JP)
OKABE KOJI (JP)

PCT/JP2010/071620

June 30, 2011

November 26, 2010

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NEC CORP (JP)
TANAKA DAISUKE (JP)
ARAKAWA TAKAYUKI (JP)
HANAZAWA KEN (JP)
OSADA SEIYA (JP)
OKABE KOJI (JP)

G10L25/78

JP2010032792A	2010-02-12
JPH08305388A	1996-11-22
JPH09212195A	1997-08-15
JPH06236195A	1994-08-23

ASAI, TOSHIO (JP)
Toshio Asai (JP)

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