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Abstract

The international standards governing the measurement of sound insulation in buildings (ISO 140) do not explicitly cover the methodology of taking measurements in large open rooms. A building with open plan floors, each of about 1300 m², is considered here. The ISO 140-14 standard, through an analysis of sound level distribution, allowed smaller partitions to be identified and used as reference volumes. Different index calculation methods allowed critical issues to be highlighted. The impact sound index was strongly affected by geometry (i.e., volume); therefore, its calculation using different virtual volumes gave differing results. Furthermore, the index calculated using the logarithmic average of the indices for each virtual volume and an extended analysis of measurements over the entire floor provided different results. The airborne sound insulation index was demonstrated to be independent of the choice of virtual volumes; it could be consistently calculated using either the logarithmic average or the extended analysis.

Keywords

acoustic field measurement large open rooms ISO 140

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References

ISO 140, Acoustics—Measurement of sound insulation in buildings and of building elements

– Part 4: Field measurements of airborne sound insulation between rooms, 1998.

– Part 5: Field measurements of airborne sound insulation of facade elements and facades, 1998.

– Part 7: Field measurements of impact sound insulation of building elements, 1998.

– Part 14: Guidelines for special situations in the field, 2004. Note: Withdrawn and replaced by Part 13.

Chiang

, and Shu

, Acoustical Design of Stage with Large Plane Surfaces in Rectangular Recital Halls, Applied Acoustics, 2003, 64, 863–884.

Jang

H.S.

Kim

Y.H.

, and Jeon

J.Y.

, Effects of Stage Volume and Absorption on Acoustics of Concert Halls: Proceedings of the 20^th International Congress on Acoustics, Sydney, 2010,.

Zahorik

, Assessing Auditory Distance Perception Using Virtual Acoustics, J. Acoust. Soc. Am., 2002, 111, 1832.

Farina

, and Fornari

, Studio della Propagazione del Rumore in Ambienti Industriali Bassi e Vasti: Proceedings of the dBA-98, Modena, 1998,.

10.

Papadopoulos

, Development of an Optimised, Standard Compliant Procedure to Calculate Sound Transmission Loss: Design of Transmission Rooms, Applied Acoustics, 2002, 63, 1003–1029.

11.

Anderson

J.S.

Bratos-Anderson

, and Doany

, The Acoustics of a Large Space with a Repetitive Pattern of Coupled Rooms, Journal of Sound and Vibration, 1997, 208(2), 313–329.

12.

ISO 717:2013 Acoustics — Rating of sound insulation in buildings and of building elements – Part 2: Impact sound insulation.

13.

Ward

J.H.

, Hierarchical Grouping to Optimize an Objective, Journal of the American Statistical Association, 1963, 58, 236–244.

14.

Hartigan

J.A.

, and Wong

M.A.

, A K-means clustering, Applied Statistics, 1979, 28, 100–108.

15.

Kaufman

, and Rousseeuw

P.J.

, Finding Groups in Data, Wiley Series in Probability and Mathematical Statistics, Hoboken (NJ, 1990.

16.

Brock

Pihur

Datta

clValid : An R Package for Cluster, Journal of Statistical Software, 2008, 25, 1–22.

17.

Handl

Knowles

, and Kell

D.B.

, Computational Cluster Validation in Post-Genomic Data Analysis., Bioinformatics, 2005, 21, 3201–3212.

18.

Dunn

J.C.

, Well Separated Clusters and Fuzzy Partitions., Journal on Cybernetics, 1974, 4, 95–104.

19.

Rousseeuw

P.J.

, Silhouettes: A Graphical Aid to the Interpretation and Validation of Cluster Analysis., Journal of Computational and Applied Mathematics, 1987, 20, 53–65.

20.

Datta

, and Datta

, Comparisons and Validation of Statistical Clustering Techniques for Microarray Gene Expression DataBioinformatics, 2003, 19(4):459; 66.

21.

Yeung

K.Y.

Haynor

D.R.

, and Ruzzo

W.L.

, Validating Clustering for Gene Expression Data, Bioinformatics, 2001, 17(4):309; 18.

22.

Pihur

Datta

, and Datta

, Weighted Rank Aggregation of Cluster Validation Measures: A Monte Carlo Cross-entropy ApproachBioinformatics, 2007, 23(13):1607; 15.

23.

Efron

, and Tibshirani

R.J.

, An Introduction to the Bootstrap, Chapman & Hall/CRC, London, 1993.

24.

UNI 8199, Acoustic Tests of Air Conditioning and Ventilation, 1998.

25.

UNI 11347, Acoustic Classification of Building Units—Procedure for Assessment and Verification in Field, 2010.

Field Measurements of Sound Insulation in Large,Open Rooms

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