Patent ID: 6317507
Filing Date: 2001-11-13
Classification: G10L

Abstract:
A device for the verification of time-dependent, user-specific signals which includesmeans for generating a set (O') of feature vectors (o.sub.t ') which serve to provide an approximative description of an input signal and are associated with selectable sampling intervals of the signal;means for preparing an HMM model (.lambda.) for the signal;means for determining a probability value which describes the probability of occurrence of the set (O') of feature vectors (o.sub.t '), given the HMM model (.lambda.), anda threshold decider for comparing the probability value with a threshold value (.tau.) and for deciding on the verification of the signal,characterized in that means (10) are provided for the automatic, person-specific evaluation of the relevance of the features collected in the feature vectors by means of an LDA transformation, and for the automatic selection of features evaluated as relevant.