14th International Congress of Phonetic Sciences (ICPhS-14)

San Francisco, CA, USA
August 1-7, 1999

Influence of Dynamics in the Perceived Naturalness of Portuguese Nasal Vowels

António Teixeira (1), Francisco Vaz (1), José Carlos Príncipe (2)

(1) Dep. Electrónica e Telec., Universidade de Aveiro, Portugal
(2) Computational NeuroEngineering Lab, University of Florida, Gainesville, USA

Several studies point to the need of regarding speech as a dynamic phenomenon. The influence of dynamic information in oral vowel perception is a subject of study for many years. In addition, some researchers point to the need to see nasal vowels as dynamic. To produce high quality synthetic nasal vowels, one of our interests that motivated this work, would be useful to know in what measure we need to include dynamic information. Our study consisted in a perceptual test using stimuli generated by an articulatory synthesizer. Our null hypothesis was that with the sound characteristics held constant, by maintaining velum and oral articulators fixed, quality is not statistically different from cases where velum and other articulators are allowed to move. Our results are against this null hypothesis pointing to the need of dynamic information to obtain nasal vowels of high quality.

Full Paper

Bibliographic reference.  Teixeira, António / Vaz, Francisco / Príncipe, José Carlos (1999): "Influence of dynamics in the perceived naturalness of Portuguese nasal vowels", In ICPhS-14, 2457-2460.