Sixth European Conference on Speech Communication and Technology

Budapest, Hungary
September 5-9, 1999

Acoustical Characterisation of the Accented Syllable in Portuguese, A Contribution to the Naturalness of Speech Synthesis

Joao Paulo Teixeira (1,2), Elisabete Rosa Paulo (1), Diamantino Freitas (2), Maria da Graca Pinto (3)

(1) ESTiG-Bragança; (2) CEFAT (F. E. U. Porto); (3) F. L. U. Porto, Portugal

Text-to-Speech systems require control of the prosodic parameters of the produced speech waveform in order to achieve a higher naturalness and degree of perception. Amongst the several dimensions into which prosody can be unfolded, the accented syllable realisation brings the basic problem of producing a set of comprehensive rules for accurate control of the acoustic realisation of the syllable parameters, which remains to be solved. In particular, for the Portuguese language, in Europe, a set of comprehensive quantitative characterisation data and rules is absolutely lacking. The present paper is intended, as a quantitative contribution, as far as we know the first, to the solution of this problem. The duration Intensity, and variation of F0 were modelled in the tonic syllable according to its position in the word and the position of the word in the sentence.

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Bibliographic reference.  Teixeira, Joao Paulo / Paulo, Elisabete Rosa / Freitas, Diamantino / Pinto, Maria da Graca (1999): "Acoustical characterisation of the accented syllable in portuguese, a contribution to the naturalness of speech synthesis", In EUROSPEECH'99, 1651-1654.