Saved in:
| Main Authors: | , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2026
|
| Subjects: | |
| Online Access: | https://arxiv.org/abs/2604.19362 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866914494853152768 |
|---|---|
| author | Blandin, Remi Laabs, Martin von Bunau, Rudolf Lloyd, Bryn Farcito, Silvia Nikolayev, Denys Hossu, Gabriela Birkholz, Peter Plettemeier, Dirk |
| author_facet | Blandin, Remi Laabs, Martin von Bunau, Rudolf Lloyd, Bryn Farcito, Silvia Nikolayev, Denys Hossu, Gabriela Birkholz, Peter Plettemeier, Dirk |
| contents | This study experimentally validates a numerical model of electromagnetic propagation through the human head during the pronunciation of different vowels, with the goal of improving our understanding of the underlying physical phenomena. A realistic finite element model was created from magnetic resonance images acquired while pronouncing the vowels /a/, /i/, and /u/. The model was validated against scattering matrix measurements obtained from two subjects whose geometries were modeled. Despite several potential sources of discrepancy, the simulations and measurements showed good qualitative agreement, confirming the validity of the approach. Similar transmission coefficient patterns were observed across subjects for the same vowels. Within the investigated frequency range of (1-6 GHz), the electric field exhibited a Mie scattering pattern. Local minima and maxima in the transmission coefficient, characterizing different articulatory configurations, were correlated with local variations in the electric field amplitude. The transmission coefficient's shape results from an interplay between resonance patterns and antenna placement, while the degree of mouth opening influences the shape of scattering modes. Although technically challenging, this numerical approach proved effective for studying electromagnetic propagation in the human head. The resulting robust numerical model and improved understanding of the underlying physics are expected to facilitate the development of radio-frequency-based silent speech interfaces. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2604_19362 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Articulatory movements influence electromagnetic wave transmission through the vocal tract Blandin, Remi Laabs, Martin von Bunau, Rudolf Lloyd, Bryn Farcito, Silvia Nikolayev, Denys Hossu, Gabriela Birkholz, Peter Plettemeier, Dirk Applied Physics This study experimentally validates a numerical model of electromagnetic propagation through the human head during the pronunciation of different vowels, with the goal of improving our understanding of the underlying physical phenomena. A realistic finite element model was created from magnetic resonance images acquired while pronouncing the vowels /a/, /i/, and /u/. The model was validated against scattering matrix measurements obtained from two subjects whose geometries were modeled. Despite several potential sources of discrepancy, the simulations and measurements showed good qualitative agreement, confirming the validity of the approach. Similar transmission coefficient patterns were observed across subjects for the same vowels. Within the investigated frequency range of (1-6 GHz), the electric field exhibited a Mie scattering pattern. Local minima and maxima in the transmission coefficient, characterizing different articulatory configurations, were correlated with local variations in the electric field amplitude. The transmission coefficient's shape results from an interplay between resonance patterns and antenna placement, while the degree of mouth opening influences the shape of scattering modes. Although technically challenging, this numerical approach proved effective for studying electromagnetic propagation in the human head. The resulting robust numerical model and improved understanding of the underlying physics are expected to facilitate the development of radio-frequency-based silent speech interfaces. |
| title | Articulatory movements influence electromagnetic wave transmission through the vocal tract |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2604.19362 |