Abstract:
This study explored the effect of visual feedback on classroom noise levels, using a SoundEar II
device that monitors noise levels in real time with feedback on intensity levels using a lighting
system. During phase one, noise levels from three classrooms in the same school were measured
over 36 h of classroom activities. For phase two, six teachers from two schools completed
a questionnaire describing their experiences using the device. Visual feedback resulted in a
1.4-dBA reduction in the average noise levels. Classroom noise levels were above 70 dBA for
33% of the time in the baseline period compared to 24% in the intervention period with visual
feedback provided on noise levels. Teacher perceptions indicated that visual feedback was
beneficial to classroom noise levels and positively influenced the behaviour of learners. Visual
feedback reduced overall classroom noise and can provide a cost-effective, noninvasive tool to
create a more enabling classroom environment.
