Speaker Verification in Realistic Noisy Environment in Forensic Science

Toshiaki KAMADA  Nobuaki MINEMATSU  Takashi OSANAI  Hisanori MAKINAE  Masumi TANIMOTO  

IEICE TRANSACTIONS on Information and Systems   Vol.E91-D   No.3   pp.558-566
Publication Date: 2008/03/01
Online ISSN: 1745-1361
DOI: 10.1093/ietisy/e91-d.3.558
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Section on Robust Speech Processing in Realistic Environments)
Category: Speaker Verification
text-dependent speaker verification,  narrow-band noise,  clarification of speech,  missing feature theory,  forensic science,  

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In forensic voice telephony speaker verification, we may be requested to identify a speaker in a very noisy environment, unlike the conditions in general research. In a noisy environment, we process speech first by clarifying it. However, the previous study of speaker verification from clarified speech did not yield satisfactory results. In this study, we experimented on speaker verification with clarification of speech in a noisy environment, and we examined the relationship between improving acoustic quality and speaker verification results. Moreover, experiments with realistic noise such as a crime prevention alarm and power supply noise was conducted, and speaker verification accuracy in a realistic environment was examined. We confirmed the validity of speaker verification with clarification of speech in a realistic noisy environment.