The phonetic description of the voice of teachers from public schools in São Paulo
DOI:
https://doi.org/10.23925/2176-2724.2025v37i2e68945Keywords:
Voice, Auditory Perception, Voice QualityAbstract
Introduction: This study focuses on the phonetic assessment of voice quality using speech samples from public school teachers in São Paulo. Purpose: To describe vocal quality settings (VQS) in articulatory, phonatory, muscular tension aspects, and vocal dynamics elements (VDE) in speech samples from teachers in São Paulo. Method: A cross-sectional study with a retrospective collection of 60 speech samples analyzed using the Vocal Profile Analysis Scheme (BP-VPAS). All samples were edited with PRAAT software, and those with a signal-to-noise ratio above 2 were selected to minimize external noise interference. Researchers extracted 40-second semi-spontaneous speech excerpts and grouped them into the Experiment MFC 3.S script for auditory-perceptual tasks. One-third of the samples were repeated for internal consistency, with the script playing them randomly. Results: Perceptual judgments showed high reliability (alpha coefficients: 0.777 and 0.814). Discriminant analysis identified vocal quality settings segregating groups based on vocal dynamics. Key variables included Rough Voice (71.7%), Creaky Voice (48.1%), Vocal Tract Hyperfunction (35.3%), Whisper (32.2%), and Pharyngeal Constriction (43.3%). These findings supported group classifications: Non-Case (no dysphonia), Case I (perceptual alteration only), Case II (laryngeal alteration only), and Case III (combined perceptual and laryngeal alterations). Conclusion: VQS related to muscular tension and supralaryngeal phonatory mechanisms were essential in distinguishing groups, enhancing the understanding of dysphonia among teachers.
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Copyright (c) 2025 ANA CAROLINA FERNANDES, Zuleica Camargo, Susana Pimentel Pinto Giannini, Luiz Carlos Rusilo, Léslie Piccolotto Ferreira

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