Speaker verification in the telephone network: research activities in the cave project
Frédéric Bimbot, Hans‐Peter Hutter, C. Jaboulet, Johan W. Koolwaaij, Johan Lindberg, Jean-Benoı̂t Pierrot · 1997
This paper summarizes the main results from the Speaker Verification (SV) research pursued so far in the CAVE project. Different state-of-the art SV algorithms were implemented in a common HMM framework and compared on two databases : YOHO (office environment speech) and SESP (telephone speech). This paper is concerned with the different design issues for LR-HMM-based SV algorithms which emerged from our investigations and which led to our current SV system, which delivers Equal Error Rates below 0.5 % on a very realistic telephone speech database. 1. CONTEXT The CAVE project (CAller VErification in Banking and Telecommunications) is a 2 year project supported by the Language Engineering Sector of the Telematics Applications Programme of the European Union, and for the Swiss partners by the Office F'ed'eral de l'Education et de la Science (Bundesamt fur Bildung und Wissenschaft). The partners are Dutch PTT Telecom, KUN, KTH, ENST, UBILAB, IDIAP, VOCALIS, TELIA and Swiss Telecom PTT. ...