Phonation threshold pressure at large asymmetries of the vocal folds. (September 2020)

• Record Type: Journal Article
• Authors: Lucero, Jorge C.; Pelorson, Xavier; Van Hirtum, Annemie
• Is Part Of: Biomedical signal processing and control. Volume 62(2020)
• Publication Date: 2020-09
• Subjects: 92C05 -- 74F10 -- 34C15; Phonation -- Vocal fold -- Oscillation -- Asymmetry; Signal processing -- Periodicals; Biomedical engineering -- Periodicals; Signal Processing, Computer-Assisted -- Periodicals; Image Processing, Computer-Assisted -- Periodicals; Biomedical Engineering -- Periodicals; 610.28
• DOI: 10.1016/j.bspc.2020.102105
• Languages: English
• ISSNs: 1746-8094

Abstract

Abstract: The phonation threshold value of the lung pressure has been interpreted as a measure of ease of phonation and proposed as a diagnostic parameter for vocal health. Therefore, it is important to understand its behavior as a function of laryngeal parameters, particularly in abnormal configurations. This paper compares results from a theoretical model of the vocal folds with measures from a mechanical replica, in the presence of a natural frequency asymmetry. It shows that, at small asymmetry, the threshold pressure increases with the degree of asymmetry, whereas at large asymmetry, the threshold pressure reaches a plateau. Highlights: Comparison of a theoretical model with measures from a mechanical replica. At small asymmetry, the phonation threshold pressure increases with the asymmetry. At large asymmetry, the phonation threshold pressure reaches a plateau. Results indicate caution in the application of phonation threshold pressure as an assessment tool for vocal health.