INVESTIGATION OF INFRASOUND LEVELS IN EDUCATIONAL PREMISES AND DETERMINATION OF CONDITIONS FOR THEIR NORMALIZATION
DOI:
https://doi.org/10.26906/SUNZ.2024.1.165Keywords:
infrasound, educational classrooms, computer classes, educational laboratoriesAbstract
The study is dedicated to solving the scientific and practical problem of normalizing infrasound levels in general classrooms, computer classrooms, specialized laboratories of higher education institutions and providing recommendations on means and measures for their normalization. An analysis of existing research, publications, and applied developments regarding measures and means of normalizing infrasound levels in educational and industrial settings was carried out. On-site measurements of infrasound levels in the premises of higher education institutions were performed. The infrasound measurement was carried out with a calibrated OKTAVA-110A device - a class 1 sound level meter with built-in octave and third-octave filters. It was found that in certain premises of higher education institutions, the infrasound values are close to the maximum permissible in accordance with European requirements - 90 dB. Significant differences in the readings of the device on the "Lin" and "A" scales indicate the significant presence of infrasound in the general acoustic pollution. At the same time, unexpected, repeated presence of infrasound levels of 95-105 dB was found in some locations of educational buildings and adjacent territories. These facts require establishing the sources of increased infrasound load on the acoustic environment and their further research. A promising direction for improving the safety of students, teachers and employees is a comprehensive survey of the premises and the surrounding territory of the university, followed by the drawing up of a map of the acoustic pollution of the environment for the development of a system of safety measures based on the principles of reasonable sufficiency.Downloads
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