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1. (WO2001039175) METHOD AND APPARATUS FOR VOICE DETECTION

Pub. No.:    WO/2001/039175    International Application No.:    PCT/JP1999/006539
Publication Date: Fri Jun 01 01:59:59 CEST 2001 International Filing Date: Thu Nov 25 00:59:59 CET 1999
IPC: G10L 11/02
G10L 19/00
Applicants: FUJITSU LIMITED

SUZUKI, Kaori

OTA, Yasuji

Inventors: SUZUKI, Kaori

OTA, Yasuji

Title: METHOD AND APPARATUS FOR VOICE DETECTION
Abstract:
A voice-detecting device is provided to precisely discriminate between voiced and unvoiced intervals adaptively to various features of possible noises superimposed on a voice signal. The voice detection device comprises interval estimate means (11) for determining the probability that each of the time series voice frames belongs to a voiced interval according to a statistical technique; quality monitor means (12) for monitoring the quality of the voice signal of each voice frame; and interval determination means (13) for weighting the resulting probability based on the signal quality to determine the confidence of a voice interval.