Abstract
Crime-detection automatic speaker verification and identification (CASVI) system oriented to nonprofessional experts was described at the 137th ASA Meeting [I. I. Gorban, N. I. Gorban, and A. V. Klimenko, J. Acoust. Soc. Am. 105, 1353 (1999)]. At the current meeting another speaker recognition system for professional crime-detection experts is presented. It consist of special units, Pentium-type computer, and programs realized speech-processing algorithms in automated and automatic modes. The system gives the possibility to research records made on different tape recorders, to fit tape speed, to decode speech records, to suppress noises, to correct frequency and nonline record distortions, to sort sounds, to measure and calculate different discriminate features, characteristics, and parameters usually used by crime-detection experts in their practical work, to compare the records, to form libraries and archives, and to make reports. The system has a simple and comfortable interface tailor-made for crime-detection expert aims. Police exploiting of the system has shown that utilization of the system raises productivity of expert work sometimes and essentially improves authenticity of phonoscope expertise.
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