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NCJ Number: 31257 Find in a Library
Title: SEMI-AUTOMATIC SPEAKER IDENTIFICATION SYSTEM (FROM CARNAHAN CONFERENCE ON CRIME COUNTERMEASURES, 1975 PROCEEDINGS BY JOHN S JACKSON - SEE NCJ-31252)
Author(s): P K BRODERICK; J E PAUL; R J RENNICK
Corporate Author: University of Kentucky
College of Engineering
United States of America

Institute of Electrical and Electronics Engineers
Lexington Section
United States of America

Aerospace and Electronic Systems Society
United States of America
Date Published: 1975
Page Count: 9
Sponsoring Agency: Aerospace and Electronic Systems Society

Institute of Electrical and Electronics Engineers
Lexington, KY
University of Kentucky
Lexington, KY 40506
Format: Document
Language: English
Country: United States of America
Annotation: DESCRIPTION OF A SPEAKER IDENTIFICATION SYSTEM WHICH IS DESIGNED TO ENABLE LAW ENFORCEMENT PERSONNEL TO COMPARE THE RECORDED VOICE OF A CRIMINAL WITH RECORDED VOICE SAMPLES FROM SUSPECTS TO IDENTIFY PERPETRATORS OF CRIMES.
Abstract: THE SEMI-AUTOMATIC SYSTEM DESCRIBED IN THIS ARTICLE ANALYZES SPEECH SAMPLES TO IDENTIFY AND EXTRACT SPEAKERDEPENDENT FEATURES AND TO SUBSEQUENTLY PERFORM A STATISTICAL COMPARISON OF THE FEATURES FROM DIFFERENT SAMPLES. THE SYSTEM UTILIZES A MINI-COMPUTER AND ASSOCIATED PERIPHERALS TO ACCEPT ANALOG SPEECH SIGNALS FOR PROCESSING AND STATISTICAL COMPARISON. IN THE CRIMINAL SPEECH SAMPLE PROCESSING OPERATION, SPECIFIC PHONETIC EVENTS WHICH HAVE BEEN FOUND TO HAVE A HIGH DEGREE OF DISCRIMINATING POWER ARE IDENTIFIED AND LABELED BY THE OPERATOR USING A INTERACTIVE GRAPHIC DISPLAY TERMINAL. WHEN A SUSPECT SAMPLE IS OBTAINED, THE SAME PHONETIC EVENTS ARE SELECTED FOR PROCESSING. IN THE COMPARISON PHASE EACH SELECTED EVENT FROM THE CRIMINAL SAMPLE IS COMPARED WITH A LIKE EVENT FROM A SUSPECT SAMPLE. AFTER DESCRIBING THE OPERATIONS OF THIS SYSTEM, MEASURES OF SYSTEM PERFORMANCE AND RELIABILITY ARE DISCUSSED. IT IS NOTED THAT A MAJOR ADVANTAGE OF THIS SYSTEM IS ITS ABILITY TO UTILIZE THE BEST NATURAL SKILLS OF THE OPERATOR AND THE COMPUTER TO ARRIVE AT A NUMERICAL, REPEATABLE, OBJECTIVE CONCLUSION. (AUTHOR ABSTRACT MODIFIED)
Index Term(s): Computer aided operations; Evidence identification; Minicomputer systems; Suspect identification; Voice identification
To cite this abstract, use the following link:
http://www.ncjrs.gov/App/publications/abstract.aspx?ID=31257

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