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Evaluation of Sound Insulation of Intense Sources of Pulsed Noise by Building Structures in Natural Conditions

Number of journal: 6-2021
Autors:

Kanev N.G.,
Fadeev A.S.,
Tsukernikov I.E.

DOI: https://doi.org/10.31659/0585-430X-2021-792-6-25-29
УДК: 699.844

 

AbstractAbout AuthorsReferences
Evaluation of the sound insulation of high-level pulse noise by building structures is a little-studied issue in the field of building acoustics. This is due to the fact that such noise sources (shooting galleries, shooting ranges, etc.) are usually not located near buildings, structures and territories with a permanent presence of people. However, in some cases, such a task may be relevant. The paper presents an experimental comparison of the transmission of pulsed and constant noises from one room to another. The source of the pulse noise was a firearm of four types, the source of the constant noise was the acoustic system. The measurements were carried out in the current shooting gallery and in adjacent rooms, one of which directly borders the gallery, and the other has no common enclosing structures with it. In both cases, it was found that the difference in sound pressure levels in the gallery and the adjacent room is significantly greater with pulsed excitation in the octave bands with fsh=31.5–250 Hz than with constant excitation. The results obtained indicate that the acoustic insulation of rooms significantly depends on the nature of noise exposure: at low frequencies, the transmission of pulsed noise between rooms is much weaker than the transmission of constant noise. It is noted that the results of the field experiment are qualitative in nature, for reliable quantitative estimates of the isolation of pulse noise, additional field and laboratory studies are needed to confirm the recorded effect, as well as the development of a theoretical basis for calculating the transmission of pulse noise between rooms.
N.G. KANEV1,3,4, Candidate of Sciences (Physics and Mathematics) (This email address is being protected from spambots. You need JavaScript enabled to view it.);
A.S. FADEEV1, leading acoustic engineer (This email address is being protected from spambots. You need JavaScript enabled to view it.);
I.E. TSUKERNIKOV2, Doctor of Sciences (Engineering) (This email address is being protected from spambots. You need JavaScript enabled to view it.)

1 Group of companies “Acoustic Group” (33, bldg. 2, Novokuznetskaya Street, Moscow, 115054, Russian Federation)
2 Research Institute of Building Physics of the Russian Academy of Architecture and Construction (21, Lokomotivniy Driveway, Moscow, 127238, Russian Federation)
3 “Acoustic Institute named after Academician N.N. Andreev” JSC (4, Shvernik Street, Moscow, 117036, Russian Federation)
4 Bauman Moscow state technical university (National research university of technology) (5, build. 1, 2nd Baumanskaya Street, Moscow, 105005, Russian Federation)

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For citation: Kanev N.G., Fadeev A.S., Tsukernikov I.E. Evaluation of sound insulation of intense sources of pulsed noise by building structures in natural conditions. Stroitel’nye Materialy [Construction Materials]. 2021. No. 6, pp. 25–29. (In Russian). DOI: https://doi.org/10.31659/0585-430X-2021-792-6-25-29


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