Evaluation of the variation of the mucosal wave according to the phonation tone through Biomechanical Voice Analysis
Evaluation of the variation of the mucosal wave according to the phonation tone through Biomechanical Voice Analysis
-
DOI: 10.22533/at.ed.1593992304127
-
Palavras-chave: Análisis biomecánico; Afonía; patología de la voz; Onda mucosa
-
Keywords: Biomechanical analysis; Aphonia; voice pathology; Mucous wave.
-
Abstract:
Rationale and objectives: When an individual changes the pitch of his or her voice, his or her vocal folds undergo structural and dynamic variations that produce not only a different sound, but also a vocal pattern and differences in the characteristics of the mucosal wave; which in turn must be detected by tools that allow this phenomenon to be objectified. Thus, the objective of this work is to evaluate the changes observed in the correlate of the mucosal wave, in the open and closed phase, when modifying the phonation mode. Methods: The study analyzed voice recordings of 160 subjects without voice pathology obtained from the database of the Saarbrucker Stimmdatenbank Institut für Phonetik. Biomechanical analysis of the evaluated voice samples was performed using the Voice Clinical Systems® biomechanical analysis tool. Selected voice samples were sent to the Voice Clinical Systems® virtual laboratory using the “Analysis for Research” option. Results: The results show that there is a significant difference (p <0.001) in the mucosal wave values observed in the open and closed phase in relation to the tone used by the subject. It can be observed how phonation in high pitches modifies the biomechanical properties of the free edge and reduces the mucosal wave amplitude. Likewise, phonation in low tones produces, regardless of the sex of the subject, an increase in the mucosal wave effect (p < 0.001). Finally, the amplitude of the mucosal wave in opening also shows higher values in the male group than in the female group for all frequencies. Conclusions: It is important to find evaluation methods and tools that allow us to evaluate the mucosal wave objectively and reliably. Biomechanical analysis of the voice has proven to be effective in identifying the changes observed in the effect of the mucosal wave and derived from the modification of the phonatory pattern. A broader understanding of the characteristics of the mucosal wave complements the diagnosis and will help to more accurately characterize the voice pathology and guide towards more effective treatment.
- Tenesaca Pintado, Walter
- Fernández Baillo, Roberto
- Cardoso López, Isabel