VOICE AUTHENTICATION SYSTEM

PROBLEM TO BE SOLVED: To additionally enhance authentication performance in a voice authentication system which performs authentication based on voice. SOLUTION: By using a feature parameter from a first acoustic analysis section 102, the learning of an HMM acoustic model is performed according to a...

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Bibliographic Details
Main Author FUJIMAKI SAKAE
Format Patent
LanguageEnglish
Published 05.01.2006
Subjects
ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
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Summary:PROBLEM TO BE SOLVED: To additionally enhance authentication performance in a voice authentication system which performs authentication based on voice. SOLUTION: By using a feature parameter from a first acoustic analysis section 102, the learning of an HMM acoustic model is performed according to a prescribed algorithm in a speaker HMM acoustic model creation section 114 for normalization and mapping is performed in a two-dimensional acoustic space by a two-dimensional space mapping section 115 and is zone-divided by a zone division section 116. As to the respective zones, the feature parameters of the speakers for normalization belonging to the respective zones are read out of a memory section 113 for the feature parameters of the speakers for normalization by a zone HMM acoustic model creation section 117 and the creation of the HMM acoustic model is performed according to the the prescribed algorithm and is memorized into a memory section 104 for the HMM acoustic model for normalization. COPYRIGHT: (C)2006,JPO&NCIPI
Bibliography:Application Number: JP20040177439