7th International Conference on Spoken Language Processing

September 16-20, 2002
Denver, Colorado, USA

Characteristics of a Low Reject Mode Speaker Verification System

Daniel Elenius, Mats Blomberg

KTH, Sweden

The performance of a speaker verification (SV) system is normally determined by the false reject (FRR) and false accept (FAR) rates as averages on a population of test speakers. However, information on the FRR distribution is required when estimating the portion of clients that will suffer from an unacceptably high reject rate. This paper studies this distribution in a population using a SV system operating in low reject mode. Two models of the distribution are proposed and compared with test data. An attempt is also made to tune the decision threshold in order to obtain a desired portion of clients having a reject rate lower than a specified value.


Full Paper

Bibliographic reference.  Elenius, Daniel / Blomberg, Mats (2002): "Characteristics of a low reject mode speaker verification system", In ICSLP-2002, 1385-1388.