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Lombard Effect in Individuals with Nonphonotraumatic Vocal Hyperfunction: Impact on Acoustic, Aerodynamic, and Vocal Fold Vibratory Parameters
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Castro, Christian; Prado, Pavel; Espinoza, Víctor M.; Testart, Alba; Marfull, Daphne; Manriquez, Rodrigo; Stepp, Cara E.; Mehta, Daryush D.; Hillman, Robert E.; Zañartu, Matías – Journal of Speech, Language, and Hearing Research, 2022
Purpose: This exploratory study aims to investigate variations in voice production in the presence of background noise (Lombard effect) in individuals with nonphonotraumatic vocal hyperfunction (NPVH) and individuals with typical voices using acoustic, aerodynamic, and vocal fold vibratory measures of phonatory function. Method: Nineteen…
Descriptors: Acoustics, Voice Disorders, Motor Reactions, Speech
Clinical Utility of the Ratio of Sound Pressure Level to Subglottal Pressure in Patients Surgically Treated for Phonotraumatic Vocal Fold Lesions
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Toles, Laura E.; Seidman, Ariana Y.; Hillman, Robert E.; Mehta, Daryush D. – Journal of Speech, Language, and Hearing Research, 2022
Purpose: This study aimed to determine whether a simplified, and potentially more stable, acoustic-aerodynamic voice outcome ratio (ratio of sound pressure level [SPL] to subglottal pressure) is comparable to a traditional vocal efficiency measure (ratio of acoustic power to the product of average subglottal pressure and average phonatory airflow)…
Descriptors: Voice Disorders, Surgery, Trauma, Human Body
Clinical Cutoff Scores for Acoustic Indices of Vocal Hyperfunction That Combine Relative Fundamental Frequency and Cepstral Peak Prominence
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Kapsner-Smith, Mara R.; Díaz-Cádiz, Manuel E.; Vojtech, Jennifer M.; Buckley, Daniel P.; Mehta, Daryush D.; Hillman, Robert E.; Tracy, Lauren F.; Noordzij, J. Pieter; Eadie, Tanya L.; Stepp, Cara E. – Journal of Speech, Language, and Hearing Research, 2022
Purpose: This study examined the discriminative ability of acoustic indices of vocal hyperfunction combining smoothed cepstral peak prominence (CPPS) and relative fundamental frequency (RFF). Method: Demographic, CPPS, and RFF parameters were entered into logistic regression models trained on two 1:1 case-control groups: individuals with and…
Descriptors: Voice Disorders, Acoustics, Clinical Diagnosis, Cutting Scores
Changes in the Daily Phonotrauma Index Following the Use of Voice Therapy as the Sole Treatment for Phonotraumatic Vocal Hyperfunction in Females
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Van Stan, Jarrad H.; Ortiz, Andrew J.; Marks, Katherine L.; Toles, Laura E.; Mehta, Daryush D.; Burns, James A.; Hron, Tiffiny; Stadelman-Cohen, Tara; Krusemark, Carol; Muise, Jason; Fox, Annie B.; Nudelman, Charles; Zeitels, Steven; Hillman, Robert E. – Journal of Speech, Language, and Hearing Research, 2021
Purpose: The aim of this study was to use the Daily Phonotrauma Index (DPI) to quantify group-based changes in the daily voice use of patients with phonotraumatic vocal hyperfunction (PVH) after receiving voice therapy as the sole treatment. This is part of an ongoing effort to validate an updated theoretical framework for PVH. Method: A…
Descriptors: Voice Disorders, Therapy, Intervention, Program Effectiveness
Collision Pressure and Dissipated Power Dose in a Self-Oscillating Silicone Vocal Fold Model with a Posterior Glottal Opening
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Motie-Shirazi, Mohsen; Zañartu, Matías; Peterson, Sean D.; Mehta, Daryush D.; Hillman, Robert E.; Erath, Byron D. – Journal of Speech, Language, and Hearing Research, 2022
Purpose: The goal of this study was to experimentally evaluate how compensating for the adverse acoustic effects of a posterior glottal opening (PGO) by increasing subglottal pressure and changing supraglottal compression, as have been associated with vocal hyperfunction, influences the risk of vocal fold (VF) trauma. Method: A self-oscillating…
Descriptors: Acoustics, Voice Disorders, Audio Equipment, Human Body
Differences in Daily Voice Use Measures between Female Patients with Nonphonotraumatic Vocal Hyperfunction and Matched Controls
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Van Stan, Jarrad H.; Ortiz, Andrew J.; Cortes, Juan P.; Marks, Katherine L.; Toles, Laura E.; Mehta, Daryush D.; Burns, James A.; Hron, Tiffiny; Stadelman-Cohen, Tara; Krusemark, Carol; Muise, Jason; Fox-Galalis, Annie B.; Nudelman, Charles; Zeitels, Steven; Hillman, Robert E. – Journal of Speech, Language, and Hearing Research, 2021
Purpose: The purpose of this study was to obtain a more comprehensive understanding of the pathophysiology and impact on daily voice use of nonphonotraumatic vocal hyperfunction (NPVH). Method: An ambulatory voice monitor collected 1 week of data from 36 patients with NPVH and 36 vocally healthy matched controls. A subset of 11 patients with NPVH…
Descriptors: Pathology, Physiology, Voice Disorders, Patients