Title:
音声/非音声を判定する装置、方法およびプログラム
Document Type and Number:
Japanese Patent JP4950930
Kind Code:
B2
Abstract:
A spectrum calculating unit calculates, for each of the frames, a spectrum by performing a frequency analysis on an acoustic signal. An estimating unit estimates a noise spectrum. An energy calculating unit calculates an energy characteristic amount. An entropy calculating unit calculates a normalized spectral entropy value. A generating unit generates a characteristic vector based on the energy characteristic amounts and the normalized spectral entropy values that have been calculated for a plurality of frames. A likelihood calculating unit calculates a speech likelihood value of a target frame that corresponds to the characteristic vector. In a case where the speech likelihood value is larger than a threshold value, a judging unit judges that the target frame is a speech frame.
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Inventors:
Koichi Yamamoto
Masami Akamine
Masami Akamine
Application Number:
JP2008096715A
Publication Date:
June 13, 2012
Filing Date:
April 03, 2008
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G10L15/04; G10L25/03; G10L25/21; G10L25/27; G10L25/78
Domestic Patent References:
| JP2001331190A | ||||
| JP4223497A | ||||
| JP5173594A | ||||
| JP2006113298A |
Attorney, Agent or Firm:
Hiroaki Sakai