A Brazilian Portuguese TTS Based on HMMS

Guilherme de Oliveira Pinto, Filipe Leandro de F. Barbosa, Fernando Gil V. Resende Jr.

DOI: 10.14209/its.2002.867

Evento: 2002 International Telecommunications Symposium (ITS2002)

Keywords:

Abstract

"This paper presents a Brazilian Portuguese TTS based on HMMs, which uses mel-cepstral coefficients as parameters of speech. We implemented an algorithm which performs a phoneme-based transcription to the Portuguese spoken in Rio de Janeiro. For a given text to be synthesized, after the phoneme transcription, static features are extracted from a sentence HMM, generated by concatenating HMMs sub-word units. An algorithm for choosing the best set of those speech units was also developed. Subjective tests show that the proposed TTS gives better results than a PSOLA based on syllabic units, with the advantage of easy speaker adaptation."

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