Experiments on Speaker Profile Portability

Abstract : This paper addresses the problem of speaker characterization in the speaker-dependent speech recognition problem. Speaker Adaptation and Normalization techniques are designed to reduce the mismatch introduced by inter-speaker variability. Yet there is another source of mismatch introduced by intra-speaker variability. Indeed, the speaking style of a speaker depends on the nature of the speech uttered. The framework of this paper is speaker-dependent isolated-word recognition on an embedded engine. The limited computational and memory loads of this engine reduce the possible techniques for normalization. The proposed solution uses a speaker profile trained on dictation data and exported to the embedded engine. In this framework we study the portability of a task-dependent speaker profile from dictation task to command task. Experiments have been conducted on a Scansoft 255 speakers database. We show that the portability results in a loss of efficiency due to the nature of the considered tasks.
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https://hal.archives-ouvertes.fr/hal-00013868
Contributor : Vincent Barreaud <>
Submitted on : Monday, November 14, 2005 - 5:44:18 PM
Last modification on : Thursday, January 11, 2018 - 6:19:56 AM

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  • HAL Id : hal-00013868, version 1

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Vincent Barreaud, Douglas O'Shaughnessy, Jean-Guy Dahan. Experiments on Speaker Profile Portability. 2005, pp.997 -- 1000, 2005. 〈hal-00013868〉

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