Open Access

Accuracy of MFCC-Based Speaker Recognition in Series 60 Device

  • Juhani Saastamoinen1Email author,
  • Evgeny Karpov1,
  • Ville Hautamäki1 and
  • Pasi Fränti1
EURASIP Journal on Advances in Signal Processing20052005:878210

Received: 1 October 2004

Published: 23 October 2005


A fixed point implementation of speaker recognition based on MFCC signal processing is considered. We analyze the numerical error of the MFCC and its effect on the recognition accuracy. Techniques to reduce the information loss in a converted fixed point implementation are introduced. We increase the signal processing accuracy by adjusting the ratio of presentation accuracy of the operators and the signal. The signal processing error is found out to be more important to the speaker recognition accuracy than the error in the classification algorithm. The results are verified by applying the alternative technique to speech data. We also discuss the specific programming requirements set up by the Symbian and Series 60.

Keywords and phrases

speaker identificationfixed point arithmeticround-off errorMFCCFFTSymbian

Authors’ Affiliations

Department of Computer Science, University of Joensuu, Joensuu, Finland


© Saastamoinen et al. 2005