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ICASSP
2011
IEEE

HMM-based speech synthesiser using the LF-model of the glottal source

10 years 10 months ago
HMM-based speech synthesiser using the LF-model of the glottal source
A major factor which causes a deterioration in speech quality in HMM-based speech synthesis is the use of a simple delta pulse signal to generate the excitation of voiced speech. This paper sets out a new approach to using an acoustic glottal source model in HMM-based synthesisers instead of the traditional pulse signal. The goal is to improve speech quality and to better model and transform voice characteristics. We have found the new method decreases buzziness and also improves prosodic modelling. A perceptual evaluation has supported this finding by showing a 55.6% preference for the new system, as against the baseline. This improvement, while not being as significant as we had initially expected, does encourage us to work on developing the proposed speech synthesiser further.
João P. Cabral, Steve Renals, Junichi Yamag
Added 21 Aug 2011
Updated 21 Aug 2011
Type Journal
Year 2011
Where ICASSP
Authors João P. Cabral, Steve Renals, Junichi Yamagishi, Korin Richmond
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