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首页> 外文会议>International Congress on Acoustics >A pilot study in primary school on the effect of noise monitoring system with lighting feedback on teachers' voice parameter, noise levels and subjective assessments
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A pilot study in primary school on the effect of noise monitoring system with lighting feedback on teachers' voice parameter, noise levels and subjective assessments

机译：小学噪声监测系统对教师语音参数，噪声水平和主观评估噪声监测系统效果的试验研究

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Teachers' vocal behaviour is affected, among other aspects, by the noise generated by pupils that talk and move in classroom. Under noisy conditions, teachers are likely to increase their voice level causing possible negative consequences on their vocal health. In this pilot study a noise monitoring system with a lighting feedback, namely the SEM (Speech and Sound SEMaphore) device, has been used as an educational tool. It encourages pupils to reduce their voice volumes through a coloured lighting feedback. Seven teachers from four classes of a primary school in Turin (Italy) have been monitored over two to four working days with SEM switched on and off. The results have shown that the background noise level averagely decreased by about 2.9 dBA when SEM was switched on. With SEM switched off, a tendency towards Lombard effect has occurred, i.e. an increase in the speech level with background noise level at a rate of about 0.4 dB/dB. Conversely, such effect has not been found with SEM switched on. Self-reported impressions of teachers indicated that SEM effectively reduces vocal effort and improves speech intelligibility in the classroom.
机译：教师的声音行为在其他方面，受到谈话和移动在教室里的噪音的影响。在嘈杂的条件下，教师可能会增加他们的语音水平，导致对他们的声乐健康产生负面影响。在该试点中，研究具有照明反馈的噪声监控系统，即SEM（语音和声音信号量）设备已被用作教育工具。它鼓励学生通过彩色照明反馈来减少声音卷。来自都灵（意大利）的四个小学的七位教师已经在两到四个工作日内被监控，SEM打开和关闭。结果表明，当SEM接通时，应在约2.9dBA时平均降低的背景噪声水平。随着SEM关闭，发生了伦巴第效应的趋势，即语音级别的增加，背景噪声水平以约0.4dB / dB的速率。相反，SEM接通未发现这种效果。教师的自我报告印象表明，SEM有效地降低了声乐努力，提高了课堂言语可理解。

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