ESCA Workshop on Automatic Speaker Recognition, Identification, and Verification Martigny, Switzerland April 7-9, 1994

Comparison of Hidden Markov Model Techniques for Automatic Speaker Verification

Johan de Veth, Hervé Bourlard

Lernout & Hauspie Speech Products, Ieper, Belgium

In this paper, we compare two alternative approaches for speaker verification based on hidden Markov model (HMM) technology: single Gaussian HMMs and tied multi-Gaussian HMMs. We tested each system using a database of connected digit strings recorded over local and long-distance telephone lines. According to our experiments, tied-mixture models were able to perform better than the single Gaussian approach provided that sufficient training data were available. Results will be discussed for both text-dependent and text-independent speaker verification.

Full Paper

Bibliographic reference.  Veth, Johan de / Bourlard, Hervé (1994): "Comparison of hidden Markov model techniques for automatic speaker verification", In ASRIV-1994, 11-14.