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| Research article summary (published 30 Oct 2002): |
Changes in teachers' speech during a working day with and without electric sound amplification.
Full Abstract
An increase in fundamental frequency (F(0)) and in sound pressure level (SPL) has been reported both after vocal loading tests and after a teacher's working day. This increase has been found to be greater among teachers with fewer voice complaints. The present study investigated speech changes during a teacher's working day (a) in ordinary conditions and (b) when using electric sound amplification while teaching. Five Icelandic teachers (mean age 51 years) volunteered as subjects. Classroom speech was recorded with a portable DAT recorder and a head-mounted microphone first in ordinary conditions, and the next week while using electrical sound amplification. Recordings were made during the first and the last lesson of the hardest working day of the week. F(0) and SPL were analyzed. The subjects' comments were gathered by questionnaire. An increase in F(0) and SPL was found during the working day in both teaching conditions but the change was larger and for F(0) statistically significant when amplification was used. All 5 teachers reported less tiredness of the vocal mechanism when using amplification. The results support the suggestion that a vocal loading-related increase in F(0) and SPL is not merely a sign of vocal fatigue but may even reflect an adequate adaptation to loading. Situational factors cannot be ignored, however.Copyright 2002 S. Karger AG, Basel
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Author information
Author/s: Jónsdottir, Valdis (V); Laukkanen, Anne-Maria (AM); Vilkman, Erkki (E);
Affiliation: Teachers Training Department, University of Akureyri, Iceland. valdisj(-atsign-)ismennt.is
Journal and publication information
Publication Type: Journal Article
Journal: Folia phoniatrica et logopaedica : official organ of the International Association of Logopedics and Phoniatrics (IALP) (Folia Phoniatr Logop), published in Switzerland. (Language: eng)
Reference: -2002 Nov-Dec; vol 54 (issue 6) : pp 282-7
Dates: Created 2002/11/05; Completed 2003/01/23; Revised 2004/11/17;
PMID: 12417798, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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