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  • Research Article
  • Open Access

Voice Biometrics over the Internet in the Framework of COST Action 275

  • 1Email author,
  • 2,
  • 3,
  • 4,
  • 1,
  • 4,
  • 4,
  • 2,
  • 5,
  • 5 and
  • 6
EURASIP Journal on Advances in Signal Processing20042004:796252

  • Received: 1 December 2002
  • Published:


The emerging field of biometric authentication over the Internet requires both robust person authentication and secure computer network protocols. This paper presents investigations of vocal biometric person authentication over the Internet, both at the protocol and authentication robustness levels. As part of this study, an appropriate client-server architecture for biometrics on the Internet is proposed and implemented. It is shown that the transmission of raw biometric data in this application is likely to result in unacceptably long delays in the process. On the other hand, by using data models (or features), the transmission time can be reduced to an acceptable level. The use of encryption/decryption for enhancing the data security in the proposed client-server link and its effects on the transmission time are also examined. Furthermore, the scope of the investigations includes an analysis of the effects of packet loss and speech coding on speaker verification performance. It is experimentally demonstrated that whilst the adverse effects of packet loss can be negligible, the encoding of speech, particularly at a low bit rate, can reduce the verification accuracy considerably. The paper details the experimental investigations conducted and presents an analysis of the results.


  • voice biometrics
  • speaker verification
  • packet loss
  • compression
  • Internet

Authors’ Affiliations

CLIPS/IMAG, Grenoble Cedex, 9 38041, France
Department of Electronic, Communication and Electrical engineering, University of Hertfordshire, Hatfield, AL10 9AB, UK
Department of Electrical and Electronic Engineering, University of Wales Swansea, Swansea, SA2 8PP, UK
LIA, University of Avignon, Avignon Cedex 9, 84911, France
School of Engineering, University of Wales Swansea, Swansea, SA2 8PP, UK
Aculab, Milton Keynes, MK1 1PT, UK


© Besacier et al. 2004