Multi-referenced correction of the voice timbre distortions on telephone network

Abstract : In a telephone link, the voice timbre is impaired by spectral distortions generated by the analog parts of the link. We first evaluate from a perceptual point of view an equalization method consisting in matching the long term spectrum of the processed signal to a reference spectrum. This evaluation shows a satisfying restoration of the timbre for most speakers. For some speakers however, a noticeable spectral distortion remains. That is why we propose a multi-referenced equalizer, based on a classification of speakers and using a different reference spectrum for each class. This leads to a decrease of the spectral distortion and, as a consequence, to a significant improvement of the timbre correction.
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https://hal.archives-ouvertes.fr/hal-00113833
Contributeur : Gaël Mahé <>
Soumis le : mardi 14 novembre 2006 - 16:19:01
Dernière modification le : jeudi 11 avril 2019 - 16:02:11
Document(s) archivé(s) le : jeudi 20 septembre 2012 - 14:46:10

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  • HAL Id : hal-00113833, version 1

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Gaël Mahé, André Gilloire. Multi-referenced correction of the voice timbre distortions on telephone network. Sep 2003, pp. 1381-1384. ⟨hal-00113833⟩

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