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GSM speech coding and speaker recognition
Auteur(s)
Besacier, Laurent
Grassi, Sara
Dufaux, Alain
Ansorge, Michael
Pellandini, Fausto
Date de parution
2000-06-05
In
Proceedings of the International Conference on Acoustics, Speech, and Signal Processing (ICASSP97), Institute of Electrical and Electronics Engineers (IEEE), 2000/2//1085-1088
Résumé
This paper investigates the influence of GSM speech coding on text independent speaker recognition performance. The three existing GSM speech coder standards were considered. The whole TIMIT database was passed through these coders, obtaining three transcoded databases. In a first experiment, it was found that the use of GSM coding degrades significantly the identification and verification performance (performance in correspondence with the perceptual speech quality of each coder). In a second experiment, the features for the speaker recognition system were calculated directly from the information available in the encoded bit stream. It was found that a low LPC order in GSM coding is responsible for most performance degradations. By extracting the features directly from the encoded bit-stream, we also managed to obtain a speaker recognition system equivalent in performance to the original one which decodes and reanalyzes speech before performing recognition.
Identifiants
Autre version
http://icassp2000.sdsu.edu/
Type de publication
journal article
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