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NCJ Number: 64187 Find in a Library
Title: FORENSIC VOICE IDENTIFICATION BY COMPUTERS
Journal: INTERNATIONAL CRIMINAL POLICE REVIEW  Issue:332  Dated:(NOVEMBER 1979)  Pages:254-270
Author(s): E BUNGE
Corporate Author: International Criminal Police Organization
France
Date Published: 1979
Page Count: 17
Sponsoring Agency: German Federal Ministry for Research and Technology
Germany
International Criminal Police Organization
92210 Saint Cloud, France
Contract Number: 0812014
Format: Article
Language: English
Country: France
Annotation: SYSTEMS COMPONENTS AND EXPERIMENTAL RESULTS ARE DESCRIBED FOR THE AUTOMATIC RECOGNITION OF SPEAKERS (AUROS) WHICH WAS DEVELOPED TO COMPARE THE MERITS OF DIFFERENT SPEAKER IDENTIFICATION AND VERIFICATION USING COMPUTERS.
Abstract: AN OVERVIEW OF THE DEVELOPMENT OF SOFTWARE COMPUTER SYSTEMS TO IDENTIFY VOICES INTRODUCES THE CONCEPTS AROUND WHICH AUROS WAS DESIGNED. ATTENTION IS FIRST GIVEN TO THE TWO FUNDAMENTAL PROBLEMS SUCH A SYSTEM MUST OVERCOME--THE UNIQUENESS OF SPEECH UTTERANCES AND CONSEQUENT NONREPRODUCIBILITY AND, SECONDLY, THE ENORMOUS AMOUNT OF DATA TO BE PROCESSED IN SHORT INTERVALS. GENERAL AUROS EQUIPMENT IS DESCRIBED IN TERMS OF ITS DATA COLLECTION, WHICH OCCURS THROUGH ANALYSIS EITHER IN REAL TIME ON CONSECUTIVE TIME SEGMENTS OF THE SPEECH SIGNAL, OR BASED ON THREE LINEAR TRANSFORMATIONS. THREE PHASES USED IN THE PROCEDURES FOR SPEAKER RECOGNITION AARE EXAMINED: PREPROCESSING THE SPEECH SIGNAL, 'TRAINING' THE SYSTEM, AND TESTING THE SYSTEM'S RELIABILITY; IN EXAMINING THESE PHASES, AN OUTLINE OF SPEECH ANALYSIS PROCEDURES AND CLASSIFICATION ALGORITHMS IS PRESENTED. CATEGORIES DESCRIBED ARE THE MINIMUM-DISTANCE, THE DISTRIBUTION-FREE TOLERANCE-REGION, AND THE MINIMUM-RISK. TEST RESULTS ARE REPORTED THAT RELATE TO AUROS ABILITY TO ACHIEVE SPEAKER IDENTIFICATION AND VERIFICATION AND TO DEAL WITH THE EFFECTS OF VOICE TRANSMISSION BY TELEPHONE LINE. CONTOUR AND SPEECH-SIGNAL ANALYSIS, COMPUTER REPRESENTATIONS OF VOICE WAVES, CLASSIFIERS AND ALGORITHMS ARE ILLUSTRATED IN FIGURES AND DIAGRAMS. REFERENCES ARE PROVIDED. (MHP)
Index Term(s): Computer aided operations; Computer simulation; Computer software; Data analysis; Spectroscopy; Systems analysis; Voice identification
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http://www.ncjrs.gov/App/publications/abstract.aspx?ID=64187

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