Articulatory differences between oral and nasal vowels based on the simulation of a speaker-adaptive articulatory model
نویسندگان
چکیده
In this study, a speaker-adaptive articulatory model was constructed by fitting point-wise articulatory positions measured by electromagnetic articulography (EMA) to the vocal tract framework in [5] to customize a standard vocal tract model with speaker-dependent articulatory features. With the speakeradaptive articulatory model, the area functions of oral and nasal vowel pairs (/a/, /i/, /u/) were simulated. The differences of area functions between oral and nasal vowels were decomposed into orthogonal modes [10] to account for the primary oropharyngeal articulatory changes related to nasalization. The relationship between the principal articulatory modes and the lowest two formant frequencies (F1, F2) was examined to uncover the effect of oropharyngeal articulation on the acoustics of nasal vowels.
منابع مشابه
Recovering gestures from speech signals: a preliminary study for nasal vowels
For nasal vowels, a gesture as simple as the lowering of the velum produces complex acoustic spectra. However, we still find a relative simplicity in the perceptual space; nasality is perceived easily. In this preliminary study, we use statistic method to recover the gesture of the velum. In order to reduce the extreme variability of nasal vowels, we introduced a simulation based on Maeda’s mod...
متن کاملSimulation of Human Speech Production Applied to the Study and Synthesis of European Portuguese
A new articulatory synthesizer (SAPWindows), with a modular and flexible design, is described. A comprehensive acoustic model and a new interactive glottal source were implemented. Perceptual tests and simulations made possible by the synthesizer contributed to deepen our knowledge of one of the most important characteristics of European Portuguese, the nasal vowels. First attempts at incorpora...
متن کاملAn MRI study of the oral articulation of European Portuguese nasal vowels
There is increasing evidence that, in addition to velopharyngeal coupling, lingual position may also change during production of phonemic nasal vowels. In order to investigate differences in oral articulation between European Portuguese (EP) nasal vowels and oral counterparts, imaging data (both static and real-time MRI) of several EP speakers (male and female) are used. Superimposition of outl...
متن کاملAcoustic-to-articulatory inversion using a speaker-normalized HMM-based speech production model
Acoustic-to-articulatory inverse mapping is a difficult problem because of its non-linear and oneto-many characteristics. We have previously developed a speech inversion method using a hidden Markov model (HMM)-based speech production model which takes into account the phonemespecific dynamic constraints of articulatory parameters. We found that the constraint significantly decreases the estima...
متن کاملQuand nasal est plus que nasal: L'articulation orale des voyelles nasales en français (When nasal is more than nasal: Oral articulation of French nasal vowels) [in French]
________________________________________________________________________________________________________ When nasal is more than nasal: Oral articulation of French nasal vowels Lingual and labial articulations of oral and nasal vowels of three Metropolitan French (FM) speakers were recorded using an EMA system. Inter-speaker variation in these oral articulations suggest that the role of motor e...
متن کامل