Ecological Validity of Self-Perceived Voice Quality and Acoustic Measures During Voice Assessments: An Observational Study on Faculty Teachers.
Purpose: This study investigated the ecological validity of conventional voice assessments by comparing the self-perceived voice quality and acoustic characteristics of voice production during these assessments to those in a simulated environment with varying distracting conditions and noise levels....
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 68; no. 2; pp. 478 - 491 |
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| Autores principales: | , , , |
| Formato: | Artículo |
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American Speech-Language-Hearing Association
Feb2025
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=182780481&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 182780481 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: Feb2025 vid: 68 iid: 2 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 182780481 10.1044/2024_JSLHR-24-00524 ppf: 478 ppct: 13 formats: fmt: @attributes: type: P size: 1MB tig: atl: Ecological Validity of Self-Perceived Voice Quality and Acoustic Measures During Voice Assessments: An Observational Study on Faculty Teachers. aug: au: Rodríguez, Daniel Guzman, Marco Brito, Pedro Llorens, Roberto affil: Department of Therapeutic Processes, Universidad Católica de Temuco, Chile. Neurorehabilitation and Brain Research Group, Institute for Human-Centered Technology Research, Universitat Politècnica de València, Spain. Universidad de los Andes, Santiago, Chile. Center of Teaching of Basic Sciences for Engineering, Physics Area, Faculty of Engineering Sciences, Universidad Austral de Chile, Valdivia. su: Reading Psychology of teachers Universities & colleges College teachers Behavior Virtual reality College students Self-perception Noise T-test (Statistics) Data analysis Scientific observation Statistical sampling Visual analog scale Descriptive statistics Physiological aspects of speech Simulation methods in education Speech evaluation Statistics Human voice Data analysis software Video recording sug: subj: Reading Psychology of teachers Universities & colleges College teachers Behavior Virtual reality College students Self-perception Marketing Research and Public Opinion Polling Colleges, Universities, and Professional Schools Noise T-test (Statistics) Data analysis Scientific observation Statistical sampling Visual analog scale Descriptive statistics Physiological aspects of speech Simulation methods in education Speech evaluation Statistics Human voice Data analysis software Video recording ab: Purpose: This study investigated the ecological validity of conventional voice assessments by comparing the self-perceived voice quality and acoustic characteristics of voice production during these assessments to those in a simulated environment with varying distracting conditions and noise levels. Method: Forty-two university professors (26 women) participated in the study, where they were asked to produce loud connected speech by reading a 100-word text under four different conditions: a conventional assessment and three virtual classroom simulations created with 360° videos, each with different noise levels, played through a virtual reality headset and headphones. The first video depicted students paying attention in class (40 dB classroom noise); the second showed some students talking, generating moderate conversational noise (60 dB); and the third depicted students talking loudly and not paying attention (70 dB). The entire experiment was conducted in a sound-treated room, and the voice of each participant was recorded for acoustic analysis. In each condition, self-perception of voice quality (vocal effort and vocal ease), SPL, fundamental frequency, long-term average spectrum (L1-L0 ratio, alpha ratio, and the 1/5–5/ 8 ratio), and smooth cepstral peak prominence were measured. Results: Visual distraction and noise level significantly impacted both subjective and acoustic measures of voice production, as shown by numerous statistically significant differences across almost all conditions and variables examined. Specifically, all measures increased with higher levels of distraction and noise, except for the 1/5–5/8 ratio, which showed a decreasing trend. Conclusion: These findings indicate that visual distraction and noise level significantly influence self-perceived and acoustic vocal characteristics and suggest that conventional assessments, typically conducted in silence and without visual distractors, may not accurately represent real-world performance, thus limiting their ecological validity. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
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