VOICE IDENTIFICATION RESEARCH

• NCJ Number: 481
• Author(s): ANON
• Date Published: 1972
• Length: 147 pages
• Grant Number(s): NI-70-004
• Sponsoring Agency: US Dept of Justice; US Dept of Justice NIJ Pub
• Corporate Author: Michigan Dept of State Police
• Sale Source: Superintendent of Documents, GPO; National Technical Information Service; National Institute of Justice/
• Publication Type: Report (Study/Research)
• Language: English
• Country: United States of America

Annotation

POSITIVE VOICE IDENTIFICATION BY MEANS SUFFICIENTLY RELIABLE FOR USE IN COURT.

Abstract

SPEAKER RECOGNITION BY LISTENING, VISUAL RECOGNITION OF SPEAKERS BY SPECTROGRAPHIC COMPARISON, AND SPEAKER RECOGNITION BY MACHINE, ARE EXPLAINED. METHODS OF EXPERIMENTATION, INTRASPEAKER VARIABILITY, ON THE MICHIGAN STATE UNIVERSITY VOICE IDENTIFICATION PROJECT, IS PRESENTED. RESULTS OF 673 VOICES EXAMINED BY STUDY OF 42,432 SPECTROGRAMS ARE GIVEN WITH CONCLUSIONS, INDICATING DEFINITE VALUE OF VOICE IDENTIFICATION IN LAW ENFORCEMENT. SPECIAL TRAINING REQUIREMENTS OF IDENTIFICATION TECHNICIANS IS DISCUSSED. APPENDIXES CONTAIN STATISTICAL ANALYSIS OF THE PROJECT AND PRACTICAL APPLICATIONS OF VOICE IDENTIFICATION IN CRIMINAL INVESTIGATION. LISTS OF REFERENCES ARE FOUND THROUGHOUT THE REPORT.