Cepstral Trajectories in Linguistic Units for Text-Independent Speaker Recognition

  • Javier Franco-Pedroso
  • Fernando Espinoza-Cuadros
  • Joaquin Gonzalez-Rodriguez
Part of the Communications in Computer and Information Science book series (CCIS, volume 328)

Abstract

In this paper, the contributions of different linguistic units to the speaker recognition task are explored by means of temporal trajectories of their MFCC features. Inspired by successful work in forensic speaker identification, we extend the approach based on temporal contours of formant frequencies in linguistic units to design a fully automatic system that puts together both forensic and automatic speaker recognition worlds. The combination of MFCC features and unit-dependent trajectories provides a powerful tool to extract individualizing information. At a fine-grained level, we provide a calibrated likelihood ratio per linguistic unit under analysis (extremely useful in applications such as forensics), and at a coarse-grained level, we combine the individual contributions of the different units to obtain a highly discriminative single system. This approach has been tested with NIST SRE 2006 datasets and protocols, consisting of 9,720 trials from 219 male speakers for the 1side-1side English-only task, and development data being extracted from 367 male speakers from 1,808 conversations from NIST SRE 2004 and 2005 datasets.

Keywords

automatic speaker recognition forensic speaker identification temporal contours linguistic units cepstral trajectories 

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Javier Franco-Pedroso
    • 1
  • Fernando Espinoza-Cuadros
    • 1
  • Joaquin Gonzalez-Rodriguez
    • 1
  1. 1.ATVS – Biometric Recognition GroupUniversidad Autonoma de MadridSpain

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