Automated Electroglottographic Inflection Events Detection. A Pilot Study

Journal of Voice : Official Journal of the Voice Foundation
Juliana CodinoCristina Jackson-Menaldi

Abstract

Vocal-fold vibration can be analyzed in a noninvasive way by registering impedance changes within the glottis, through electroglottography. The morphology of the electroglottographic (EGG) signal is related to different vibratory patterns. In the literature, a characteristic knee in the descending portion of the signal has been reported. Some EGG signals do not exhibit this particular knee and have other types of events (inflection events) throughout the ascending and/or descending portion of the vibratory cycle. The goal of this work is to propose an automatic method to identify and classify these events. A computational algorithm was developed based on the mathematical properties of the EGG signal, which detects and reports events throughout the contact phase. Retrospective analysis of EGG signals obtained during routine voice evaluation of adult individuals with a variety of voice disorders was performed using the algorithm as well as human raters. Two judges, both experts in clinical voice analysis, and three general speech pathologists performed manual and visual evaluation of the sample set. The results obtained by the automatic method were compared with those of the human raters. Statistical analysis revealed a significa...Continue Reading

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Citations

Jun 25, 2021·Journal of Voice : Official Journal of the Voice Foundation·Juliana CodinoMaría Eugenia Torres
Jul 29, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Rita R Patel, Sten Ternström

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