The inverse of vowel articulation

Inverse Scattering for Vowel Articulation with Frequency-domain Data

An inverse scattering problem is analyzed for vowel articulation in the human vocal tract. When a unit amplitude, monochromatic, sinusoidal volume velocity is sent from the glottis towards the lips, various types of scattering data are used to examine whether the cross sectional area of the vocal tract can uniquely be determined by each data set. Among the data sets considered are the absolute ...

Acoustic metrics of vowel articulation in Parkinson's disease: vowel space area (VSA) vs. vowel articulation index (VAI)

acoustic analysis of speech is a powerful, noninvasive, and cost effective tool to study different aspects of motor speech disorders such as the dysarthria associated with pd. in this presentation we will discuss the rationale for using acoustic analysis, its advantages and disadvantages, and methods to overcome these disadvantages. as an example, we will address the use of vowel space area (vs...

Spectrographic study of the dynamics of vowel articulation

Estimation of Place of Articulation During Stop Closures of Vowel-Consonant-Vowel Utterances

Production of vowel–oral stop consonant–vowel utterances involves movement of articulators from the articulatory position of the initial vowel towards that of the oral stop closure, and then to that of the final vowel. As the closure segments have zero or low signal energy, linear predictive coding (LPC)-based estimation of vocal tract shape fails during stop closure. This paper reports a techn...

Prediction of Vowel and Consonant Place of Articulation

A deductive approach is used to predict vowel and consonant places of articulation. Based on two main criteria, viz. simple and efficient use of an acoustic tube, along with maximum acoustic dispersion, the Distinctive Regions Model (DRM) of speech production derives regions that closely correspond to established vowel and consonant places of articulation.