Subjective and Objective Assessment of Acoustical and Overall Environmental Quality in Secondary School Classrooms

  • Astolfi A
  • Pellerey F
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A subjective survey on perceived environmental quality has been carried out on 51 secondary-school classrooms, some of which have been acoustically renovated, and acoustical measurements were carried out in eight of the 51 classrooms, these eight being representative of the different types of classrooms that are the subject of the survey. A questionnaire, which included items on overall quality and its single aspects such as acoustical, thermal, indoor air and visual quality, has been administered to 1006 students. The students perceived that acoustical and visual quality had the most influence on their school performance and, with the same dissatisfaction for acoustical, thermal and indoor air quality, they attributed more relevance, in the overall quality judgment, to the acoustical condition. Acoustical quality was correlated to speech comprehension, which was correlated to the speech transmission index, even though the index does not reflect all the aspects by which speech comprehension can be influenced. Acoustical satisfaction was lower in nonrenovated classrooms, and one of the most important consequences of poor acoustics was a decrease in concentration. The stronger correlation between average noise disturbance scores and L(A max) levels, more than L(Aeq) and L(A90), showed that students were more disturbed by intermittent than constant noise.

Author-supplied keywords

  • Acoustics
  • Environment
  • Humans
  • Judgment
  • Noise
  • Noise: adverse effects
  • Questionnaires
  • Schools
  • Visual Perception

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  • Arianna Astolfi

  • Franco Pellerey

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