Inventors:
Rostislav Bogdashevsky - Moscow, RU
Vladimir Alexeev - Moscow, RU
Vitaly Yarigin - Moscow, RU
George Baker - Los Alamos NM
Harrison Stanton - Henderson NV
Assignee:
Dendrite, Inc. - Las Vegas NV
International Classification:
G01L 506
G01L 900
Abstract:
A speech-based system for assessing the psychological, physiological, or other characteristics of a test subject is described. The system includes a knowledge base that stores one or more speech models, where each speech model corresponds to a characteristic of a group of reference subjects. Signal processing circuitry, which may be implemented in hardware, software and/or firmware, compares the test speech parameters of a test subject with the speech models. In one embodiment, each speech model is represented by a statistical time-ordered series of frequency representations of the speech of the reference subjects. The speech model is independent of a priori knowledge of style parameters associated with the voice or speech. The system includes speech parameterization circuitry for generating the test parameters in response to the test subject's speech. This circuitry includes speech acquisition circuitry, which may be located remotely from the knowledge base.