The phase substitutions in Czech harmonic concatenative speech synthesis

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F03%3A00000196" target="_blank" >RIV/49777513:23520/03:00000196 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The phase substitutions in Czech harmonic concatenative speech synthesis
Original language description
This paper describes the issues of the usage of various phase component types in the development of the Czech TTS system based on harmonic sinusoidal signal representation. We have found the approaches for speech representation based on sinusoidal co ding [1] or harmonic plus noise modelling [2] very promising. It is mainly due to possibility of high compression of the spectral representation and possibility to 'smooth' the transitions on the spectral level. The major inconvenience is the nec essity touse natural phase components to reach quality synthesis with preserved naturalness. Trying to interpolate the phase components across the concatenations causes the discontinuities in generated signal. We found that the discontinuities subs tantially degrade the fluency of synthesized speech. We propose the method of substituting the phase components by one locally constant phase component to guarantee the local phase coherence.
Czech name
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Czech description
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Project
<a href="/en/project/GA102%2F02%2F0124" target="_blank" >GA102/02/0124: Voice technologies for support of information society</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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