A glottal chink model for the synthesis of voiced fricatives

Benjamin Elie 1, * Yves Laprie 1
* Corresponding author
1 MULTISPEECH - Speech Modeling for Facilitating Oral-Based Communication
Inria Nancy - Grand Est, LORIA - NLPKD - Department of Natural Language Processing & Knowledge Discovery
Abstract : This paper presents a simulation framework that enables a glottal chink model to be integrated into a time-domain continuous speech synthesizer along with self-oscillating vocal folds. The glottis is then made up of two main separated components: a self-oscillating part and a constantly open chink. This feature allows the simulation of voiced fricatives, thanks to a self-oscillating model of the vocal folds to generate the voiced source, and the glottal opening that is necessary to generate the frication noise. Numerical simulations show the accuracy of the model to simulate voiced fricative, and also phonetic assimilation, such as sonorization and devoicing. The simulation framework is also used to show that the phonatory/articulatory space for generating voiced fricatives is different according to the desired sound: for instance, the minimal glottal opening for generating frica-tion noise is shorter for /z/ than for /Z/.
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Benjamin Elie, Yves Laprie. A glottal chink model for the synthesis of voiced fricatives. International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, Mar 2016, Shanghai, China. ⟨hal-01314308⟩

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