Benefits of teaching voice amplification as related to subjective laryngeal symptoms in teachers, and to the listening conditions for pupils

Abstract

Teachers unfavorable working conditions—large classrooms with poor acoustics, background noise and the great distance between teacher and pupils often are the main reasons for teachers voice problems. For pupils, the same circumstances simultaneously create unfavorable listening conditions. One way to diminish the vocal load of teaching is by making use of technical equipment. This Icelandic study explores whether voice amplification usage: (1) diminishes the teachers subjective symptoms of vocal fatigue; (2) makes it easier for pupils to listen and follow lessons; and (3) reveals other benefits and/or disadvantages of the usage of amplification in classrooms. Thirty-three teachers with their students (total 791), from grade school to university level, volunteered as subjects. The teachers used amplification in class for at least a week. At the end of the research period, the participants answered questionnaires, except the pupils between 6–9 years of age who were asked two questions. The results showed: (1) the majority of teachers found it easier to talk and experienced less fatigue using vocal amplification; (2) the students found it easier to hear the teacher through class chatter and to follow the lessons; (3) the disadvantages mentioned were mainly technical problems.