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SPEAKER VERIFICATION PERFORMANCE WITH CONSTRAINED DURATIONS

Abstract : Over the last decade speaker recognition has witnessed significant advances, with successful developments in Factor Analysis (FA) and more recently i-vectors, more than halving the error rates achieved by the classical UBM/GMM approach. However when very short duration utterances are considered, it is known that these improvements are much less. This paper begins with a review of the recent developments of i-vector systems with a focus on short test duration, in the region of 10 s or less. Experimental results are then presented showing that error rates rise from approximately 5% to 18% when the test duration is systematically reduced from 30 s to just 3 s. Interestingly , with the 30 s condition the i-vector error rate is in the region of half that of the corresponding UBM/GMM system. Nevertheless, when the test segments are just 3 seconds duration then the error rates of the 2 systems systems are very similar. All experiments relate to the short-short condition of the NIST 2008 SRE, but with the test duration systematically reduced.
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Pablo Sordo Martínez, Benoˆıt Fauve, Anthony Larcher, John Mason. SPEAKER VERIFICATION PERFORMANCE WITH CONSTRAINED DURATIONS. International Workshop on Biometrics and Forensics, Mar 2014, Malta, Malta. ⟨hal-01927568⟩

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