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  Data-Driven Critical Tract Variable Determination for European Portuguese

Silva, S., Almeida, N., Cunha, C., Joseph, A. A., Frahm, J., & Teixeira, A. (2020). Data-Driven Critical Tract Variable Determination for European Portuguese. Information, 11, 491. doi:10.3390/info11100491.

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Silva, S., Author
Almeida, N., Author
Cunha, C., Author
Joseph, A. A., Author
Frahm, J.1, Author           
Teixeira, A., Author
Affiliations:
1Research Group of Biomedical NMR, MPI for Biophysical Chemistry, Max Planck Society, ou_578633              

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Free keywords: Critical articulator; critical tract variable; speech production model; data-driven approach; real-time magnetic resonanc
 Abstract: Technologies, such as real-time magnetic resonance (RT-MRI), can provide valuable information to evolve our understanding of the static and dynamic aspects of speech by contributing to the determination of which articulators are essential (critical) in producing specific sounds and how (gestures). While a visual analysis and comparison of imaging data or vocal tract profiles can already provide relevant findings, the sheer amount of available data demands and can strongly profit from unsupervised data-driven approaches. Recent work, in this regard, has asserted the possibility of determining critical articulators from RT-MRI data by considering a representation of vocal tract configurations based on landmarks placed on the tongue, lips, and velum, yielding meaningful results for European Portuguese (EP). Advancing this previous work to obtain a characterization of EP sounds grounded on Articulatory Phonology, important to explore critical gestures and advance, for example, articulatory speech synthesis, entails the consideration of a novel set of tract variables. To this end, this article explores critical variable determination considering a vocal tract representation aligned with Articulatory Phonology and the Task Dynamics framework. The overall results, obtained considering data for three EP speakers, show the applicability of this approach and are consistent with existing descriptions of EP sounds.

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Language(s): eng - English
 Dates: 2020-08-092020-10-162020-10-21
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.3390/info11100491
 Degree: -

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Title: Information
Source Genre: Journal
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Publ. Info: MDPI Switzerland
Pages: - Volume / Issue: 11 Sequence Number: - Start / End Page: 491 Identifier: ISSN: 2078-2489