Testing the airborne sound insulation of reduced size baffles with different dimensions

• Autorzy: Mleczko Dominik

Identyfikatory

DOI

10.21008/j.0860-6897.2023.2.06

• Języki publikacji: EN

Abstrakty

EN

The article discusses the requirements for determining airborne sound insulation according to ISO 10140-2, which involves measuring sound pressure levels in the source (L1) and receiving (L2) rooms, as well as reverberation time measurements in the receiving room. The size of the free test opening and the equivalent sound absorption area in the receiving room affect the value of L2. While ISO 10140-5 specifies the dimensions of a full-size test opening, reduced-size openings can also be used. However, testing reduced-size baffles with specific dimensions may be necessary, and measurements on rectangular-shaped baffles may yield higher sound reduction indices than square-shaped ones. The article presents a comparative analysis of the spectral characteristics of different types of single homogeneous baffles with various dimensions using experimental methods. It examines the measurement methodology's influence on determining sound insulation spectra and the weighted sound reduction index Rw. The article also calculates the combined uncertainty in determining the sound insulation properties and partial uncertainties in determining L1 and L2.

Słowa kluczowe

EN

airborne sound insulation; sound transmission loss; reduced-size openings

PL

izolacyjność od dźwięków powietrznych; strata transmisji dźwięku

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2023
• Tom: Vol. 34, nr 2
• Strony: art. no. 2023206
• Opis fizyczny: Bibliogr. 13 poz., fot., wykr.

Twórcy

autor

Mleczko Dominik

• AGH University of Krakow, al. Adama Mickiewicza 30, 30-059 Kraków

• https://orcid.org/0000-0003-4066-9713

Bibliografia

• 1. ISO 10140-4; Acoustics - Laboratory measurement of sound insulation of building elements - Part 4: Measurement procedures and requirements; 2021
• 2. J. Jung, J. Kook, S. Goo, S. Wang; Sound transmission analysis of plate structures using the finite element method and elementary radiator approach with radiator error index; Advances in Engineering Software, 2017, 112, 1-15
• 3. J. Brunskog; The forced sound transmission of finite single leaf walls using a variational technique; J. Acoust. Soc. Am., 2012, 132(3), 1482-1493
• 4. A.J.B. Tadeu, D.M.R. Mateus; Sound transmission through single, double and triple glazing. Experimental evaluation; Applied Acoustics, 2001, 62(3), 307-325
• 5. ISO 10140-5; Acoustics - Laboratory measurement of sound insulation of building elements - Part 5: Requirements for test facilities and equipment, 2021
• 6. R.R. Wareing, J.L. Davy, J.R. Pearse; Variations in measured sound transmission loss due to sample size and construction parameters; Applied Acoustics, 2015, 89, 166-77
• 7. D. Mleczko. Using MLS Methods in Laboratory Measurement of Airborne Sound Insulation; Vibrations in Physical Systems, 2021, 32(2), 2021205; DOI: 10.21008/j.0860-6897.2021.2.05
• 8. K. Kosała, L. Majkut, D. Mleczko, R. Olszewski, T. Wszołek; Accuracy of prediction methods for sound insulation of homogeneous single baffles; Vibrations in Physical Systems, 2020, 31(2), 2020210
• 9. D. Mleczko, T. Wszołek; Variability influence of input parameters on result of room acoustic calculation; Acta Phys. Pol. A, 2010, 118(1); DOI: 10.12693/APhysPolA.118.128
• 10. ISO/IEC Guide 98-3:2008 (JCGM/WG1/100); Uncertainty of measurement - Part 3: Guide to the expression of uncertainty in measurement, 2008
• 11. W. Batko, P. Pawlik; New Method of Uncertainty Evaluation of the Sound Insulation of Partitions; Acta Phys Pol A, 2013, 123(6), 1012-1015; DOI: 10.12693/APhysPolA.123.1012
• 12. D. Mleczko, T. Wszołek. Effect of diffusing elements in a reverberation room on the results of airborne sound insulation laboratory measurements; Archives of Acoustics, 2019, 44(4), 739-746; DOI: 10.24425/aoa.2019.129729
• 13. ISO 717-1:2021-06; Acoustics - Rating of sound insulation in buildings and of building elements - Part 1: Airborne sound insulation, 2021

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).