DEVICE, METHOD, AND PROGRAM FOR VOICE DETECTION

摘要

PROBLEM TO BE SOLVED: To suppress deterioration in precision of speaking detection due to influence of a speaking time. SOLUTION: A speaker signal is inputted to a short-time sound pressure averaging unit 4a after being passed through high-pass filters 1 and 2a to limit the band almost to 2,000 Hz at which formant frequencies of a human being are mainly distributed, and the speaker signal is inputted to a long-time sound pressure averaging unit 4b after being passed through the high-pass filter 1 and a low-pass filter 2b to limit the band to a band wherein low-frequency noise is distributed. COPYRIGHT: (C)2004,JPO