The Electroglottographic Spectrum as an Indicator of Phonatory Activity
| Autor: | Angela Libeaux, Sten Ternström, Nathalie Henrich Bernardoni, Andreas Selamtzis |
|---|---|
| Přispěvatelé: | Rheinisch-Westfälische Technische Hochschule Aachen (RWTH), Department of Speech, Music and Hearing [KTH Stockholm] (KTH TMH), Royal Institute of Technology [Stockholm] (KTH ), GIPSA - Group aeroacoustics, modeling and application (GIPSA-GAMA), Département Parole et Cognition (GIPSA-DPC), Grenoble Images Parole Signal Automatique (GIPSA-lab), Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Grenoble Images Parole Signal Automatique (GIPSA-lab), Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Stendhal - Grenoble 3-Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), GIPSA - Systèmes Linguistiques et Dialectologie (GIPSA-SLD), Henrich Bernardoni, Nathalie |
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: |
electroglottography
[SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] [SPI.ACOU] Engineering Sciences [physics]/Acoustics [physics.class-ph] [INFO.INFO-TS] Computer Science [cs]/Signal and Image Processing voice électroglottographie [SCCO.LING]Cognitive science/Linguistics [SHS.LANGUE] Humanities and Social Sciences/Linguistics [PHYS.MECA.ACOU]Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] [INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing embryonic structures voix sense organs [SCCO.LING] Cognitive science/Linguistics [SHS.LANGUE]Humanities and Social Sciences/Linguistics [PHYS.MECA.ACOU] Physics [physics]/Mechanics [physics]/Acoustics [physics.class-ph] [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing psychological phenomena and processes [SPI.SIGNAL] Engineering Sciences [physics]/Signal and Image processing |
| Zdroj: | 41st Voice Foundation Annual Symposium 41st Voice Foundation Annual Symposium, May 2012, Philadelphia, United States HAL |
| Popis: | International audience; Although the electroglottographic (EGG) signal is not acoustic, one might expect that some of the source-induced variation in the spectrum slope of the airborne signal would be present also in the EGG signal. Wideband spectra of EGG signals were evaluated from sustained and intermittent phonation under various conditions, including changes of electrode position, vowel, subglottal pressure and SPL. Recordings were made of subjects producing /pV/ utterances with simultaneous acquisition of EGG and intraoral pressure. The EGG spectrum envelope was found to be quite linear in dB/octave, with the exception of the fundamental partial. The EGG spectrum effects of vowel changes were negligible. EGG spectrum slope change with SPL was large at phonation onset and small in loud phonation. Additionally, recordings from an existing database of 8 trained male singers were analysed for EGG spectrum variation with SPL. The singers performed crescendo tasks on sustained tones, with a typical SPL variation of up to 20 dB from soft to loud. The corresponding EGG spectra had slopes of -14 to ‑9 dB/octave. The variation in EGG spectrum slope was again small, on the order of one quarter of the slope variation in the airborne spectrum. Occasionally, ripple in the EGG spectrum envelope was present, due to double peaks in the time derivative of the closing part of the EGG waveform. We conclude that the EGG spectrum slope appears to offer a convenient contacting criterion, but will be harder to use for judging vocal effort beyond contacting. |
| Databáze: | OpenAIRE |
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