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Chan, Roger W. – Journal of Speech, Language, and Hearing Research, 2019
Purpose: The contribution of tissue mechanical response to vocal fatigue is poorly understood. This study investigated the fatigue response of vocal fold tissues to large-amplitude vibration exposure at phonatory frequencies, using an ex vivo ovine model. Method: Twelve sheep vocal fold mucosal specimens were subjected to sinusoidal, simple-shear…
Descriptors: Animals, Fatigue (Biology), Voice Disorders, Acoustics
Liu, Boquan; Raj, Hayley; Klein, Logan; Jiang, Jack J. – Journal of Speech, Language, and Hearing Research, 2021
Purpose: The excised canine larynx provides an advantageous experimental framework in the study of voice physiology. In recent years, signal processing methods have been applied to analyze phonations in excised canine larynx experiments. However, phonations have a highly complex and nonstationary nature corresponding to different proportions of…
Descriptors: Animals, Physiology, Acoustics, Speech
Hoffmeister, Jesse D.; Ulmschneider, Christopher L.; Jones, Corinne A.; Ciucci, Michelle R.; McCulloch, Timothy M. – Journal of Speech, Language, and Hearing Research, 2021
Purpose: The study of air pressure in the vocal tract is essential to understanding vocal function. Changes in vocal tract shape during different phonatory gestures are hypothesized to produce nonuniform air pressure across lower vocal tract locations. Current methods of air pressure measurement, however, are limited to a single location in the…
Descriptors: Human Body, Measurement Techniques, Measurement Equipment, Phonetics
Teplansky, Kristin J.; Jones, Corinne A. – Journal of Speech, Language, and Hearing Research, 2022
Purpose: Within-individual pharyngeal swallowing pressure variability differs among pharyngeal regions in healthy individuals and increases with age. It remains unknown if pharyngeal pressure variability is impacted by volitional swallowing tasks. We hypothesized that pressure variability would increase during volitional swallowing maneuvers and…
Descriptors: Human Body, Physiology, Motor Reactions, Psychomotor Skills
Jones, Corinne A.; Colletti, Christina M. – Journal of Speech, Language, and Hearing Research, 2021
Purpose: Functional reserve represents the difference between an individual's ability to produce a maximum output function and the ability to perform a functional task. Several studies have documented an age-related decrease in functional reserve with oral tongue pressure generation. Whether this pattern is seen in pharyngeal swallowing pressures…
Descriptors: Age Differences, Young Adults, Older Adults, Motor Reactions
Fernández, Secundino; Garaycochea, Octavio; Martinez-Arellano, Ana; Alcalde, Juan – Journal of Speech, Language, and Hearing Research, 2020
Objective: The aims of this study were to test the hypothesis that greater supraglottic compression (anteroposterior or lateral) correlates with higher subglottic pressure (SGP) and to develop a classification of muscle tension dysphonia (MTD), based on the degree of supraglottic compression during speech. Method: A prospective, cross-sectional…
Descriptors: Voice Disorders, Physics, Human Body, Patients
Almeida, Tamara R.; Rocha, Clayton H.; Rabelo, Camila M.; Gomes, Raquel F.; Neves-Lobo, Ivone F.; Samelli, Alessandra Giannella – Journal of Speech, Language, and Hearing Research, 2020
Purpose: The aims of this study were to characterize hearing symptoms, habits, and sound pressure levels (SPLs) of personal audio system (PAS) used by young adults; estimate the risk of developing hearing loss and assess whether instructions given to users led to behavioral changes; and propose recommendations for PAS users. Method: A…
Descriptors: Young Adults, Acoustics, Risk, Hearing Impairments
Marks, Katherine L.; Lin, Jonathan Z.; Fox, Annie B.; Toles, Laura E.; Mehta, Daryush D. – Journal of Speech, Language, and Hearing Research, 2019
Purpose: The purpose of this study was to evaluate the effects of nonmodal phonation on estimates of subglottal pressure (Ps) derived from the magnitude of a neck-surface accelerometer (ACC) signal and to confirm previous findings regarding the impact of vowel contexts and pitch levels in a larger cohort of participants. Method: Twenty-six vocally…
Descriptors: Speech, Vowels, Suprasegmentals, Measurement Techniques
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
Searl, Jeff; Knollhoff, Stephanie; Barohn, Richard J. – Journal of Speech, Language, and Hearing Research, 2017
Purpose: This preliminary study on lingual-alveolar contact pressures (LACP) in people with amyotrophic lateral sclerosis (ALS) had several aims: (a) to evaluate whether the protocol induced fatigue, (b) to compare LACP during speech (LACP-Sp) and during maximum isometric pressing (LACP-Max) in people with ALS (PALS) versus healthy controls, (c)…
Descriptors: Auditory Perception, Comparative Analysis, Neurological Impairments, Psychomotor Skills
Fryd, Amanda S.; Van Stan, Jarrad H.; Hillman, Robert E.; Mehta, Daryush D. – Journal of Speech, Language, and Hearing Research, 2016
Purpose: The purpose of this study was to evaluate the potential for estimating subglottal air pressure using a neck-surface accelerometer and to compare the accuracy of predicting subglottal air pressure relative to predicting acoustic sound pressure level (SPL). Method: Indirect estimates of subglottal pressure (P[subscript sg]') were obtained…
Descriptors: Computation, Measurement Equipment, Human Body, Accuracy
Koenig, Laura L.; Fuchs, Susanne – Journal of Speech, Language, and Hearing Research, 2019
Purpose: This study evaluated how 1st and 2nd vowel formant frequencies (F1, F2) differ between normal and loud speech in multiple speaking tasks to assess claims that loudness leads to exaggerated vowel articulation. Method: Eleven healthy German-speaking women produced normal and loud speech in 3 tasks that varied in the degree of…
Descriptors: Vowels, Articulation (Speech), German, Acoustics
McKenna, Victoria S.; Diaz-Cadiz, Manuel E.; Shembel, Adrianna C.; Enos, Nicole M.; Stepp, Cara E. – Journal of Speech, Language, and Hearing Research, 2019
Purpose: This study aimed to examine the relationship between a large set of hypothesized physiological measures of vocal effort and self-ratings of vocal effort. Method: Twenty-six healthy adults modulated speech rate and vocal effort during repetitions of the utterance /ifi/, followed by self-perceptual ratings of vocal effort on a visual analog…
Descriptors: Adults, Speech, Self Concept, Physiology
Oren, Liran; Kummer, Ann W.; Boyce, Suzanne – Journal of Speech, Language, and Hearing Research, 2022
Purpose: Secretion bubbling on the superior aspect of the velopharyngeal (VP) valve typically occurs with a small VP opening during production of oral pressure consonants. The use of high-speed nasopharyngoscopy has shown correlation between the bubbling frequency and the acoustics captured with the nasal microphone of the nasometer. The purpose…
Descriptors: Speech Language Pathology, Speech Impairments, Speech Evaluation, Phonemes
Titze, Ingo R.; Palaparthi, Anil – Journal of Speech, Language, and Hearing Research, 2020
Objective: This investigation addresses the loudness variations in sones achievable with spectral slope variations (higher harmonic energy) in human vocalization and compares it to the sound pressure level (SPL) variations typically reported in the voice range profile (VRP). Method: The primary methodology was computational. The ISO standard 226…
Descriptors: Acoustics, Human Body, Differences, Physics
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