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Public speaking : Acoustic characteristics of voice in giving a speech compared to a reading condition
Bettahi, Lamia; Leclercq, Anne-Lise; Schyns, Michael et al.
2024Pan European VOice Conference 15 (PEVOC 15)
Peer reviewed
 

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Keywords :
Public speaking; Oral presentation; Acoustic measurements; Spectral analysis; Fundamental frequency
Abstract :
[en] Introduction : Public speaking (PS) is a widespread vocal activity required in many personal and professional situations. Its quality can impact one’s career success, reputation, and credibility (1). However, little is known about which voice characteristics are representative of PS (2). Objective : This presentation aims to determine the acoustic characteristics of the PS voice by analyzing frequency parameters as well as long-term spectral features. Methods : We conducted acoustic analyses on the speech productions of 65 university students in two conditions: (1) reading aloud a phonetically balanced text (control), and (2) giving a one-minute oral presentation in front of an 8-people audience (PS). Preliminary results: Paired t-tests indicated a significantly enhanced vocal quality in the PS condition compared to the control condition, as evidenced by increased CPPS, spectral slope and center of gravity values. We found a significant effect of condition on intonation as evidenced by an increased f0 SD in the PS task. No significant difference was found for median f0. Conclusion: These findings suggest the existence of acoustic characteristics specific to PS that could be associated with Lombard speech (3) and clear speech (4). The two speaking styles are used in challenging communication situations to optimize intelligibility. 1. Ferreira Marinho, A. C., Mesquita de Medeiros, A., Côrtes Gama, A. C., & Caldas Teixeira, L. (2017). Fear of public speaking: Perception of college students and correlates. Journal of Voice, 31(1), 7-11. 2. Niebuhr, O., Skarnitzl, R., & Tylečková, L. (2018). The acoustic fingerprint of a charismatic voice : Initial evidence from correlations between long-term spectral features and listener ratings. 9th International Conference on Speech Prosody,359-363. 3. Garnier, M., & Henrich, N. (2014). Speaking in noise: How does the Lombard effect improve acoustic contrasts between speech and ambient noise?. Computer Speech & Language, 28(2), 580-597. 4. Krause, J. C., & Braida, L. D. (2004). Acoustic properties of naturally produced clear speech at normal speaking rates. The Journal of the Acoustical Society of America, 115(1), 362-378.
Disciplines :
Social & behavioral sciences, psychology: Multidisciplinary, general & others
Communication & mass media
Author, co-author :
Bettahi, Lamia  ;  Université de Liège - ULiège > Unités de recherche interfacultaires > Research Unit for a life-Course perspective on Health and Education (RUCHE)
Leclercq, Anne-Lise  ;  Université de Liège - ULiège > Département de Logopédie > Logopédie clinique
Schyns, Michael  ;  Université de Liège - ULiège > HEC Liège : UER > UER Opérations : Informatique de gestion
Etienne, Elodie  ;  Université de Liège - ULiège > HEC Liège : UER > UER Opérations
Remacle, Angélique  ;  Université de Liège - ULiège > Département de Logopédie > Logopédie des troubles de la voix
Language :
English
Title :
Public speaking : Acoustic characteristics of voice in giving a speech compared to a reading condition
Publication date :
07 September 2024
Event name :
Pan European VOice Conference 15 (PEVOC 15)
Event place :
Santander, Spain
Event date :
04/09/24 - 07/09/24
Audience :
International
Peer reviewed :
Peer reviewed
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Funding number :
FRESH/FC - 4449 FC 52277
Available on ORBi :
since 11 October 2024

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