ISO 15186-2:2003 specifies a sound intensity method to determine the in-situ sound insulation of walls, floors, doors, windows and small building elements. It is intended for measurements that have to be made in the presence of flanking transmission. It can be used to provide sound power data for diagnostic analysis of flanking transmission or to measure flanking sound insulation parameters. ISO 15186-2:2003 can be used by laboratories that could not satisfy the requirements of ISO 15186-1, which deals with laboratory measurements with no or little flanking transmission. ISO 15186-3 deals with measurements under laboratory conditions, at low frequencies. ISO 15186-2:2003 also describes the effect of flanking transmission on measurements made using the specified method, and how intensity measurements can be used -- to compare the in-situ sound insulation of a building element with laboratory measurements where flanking has been suppressed (i.e. ISO 140-3), -- to rank the partial contributions for building elements, and -- to measure the flanking sound reduction index for one or more transmission paths (for validation of prediction models such as those given in EN 12354-1). This method gives values for airborne sound insulation, which are frequency dependent. They can be converted into a single number, characterizing the acoustic performance, by application of ISO 717-1. The reproducibility of this intensity method is estimated to be equal to or better than that of the methods of ISO 140-10 and ISO 140-4, when measuring a single small and large building element, respectively.
Tämän julkaisun valmistelusta Suomessa vastaa Metalliteollisuuden Standardisointiyhdistys ry, puh. 09 19 231 (vaihde).
Sisällysluettelo
Foreword
1 Scope
1.1 General
1.2 Precision
2 Normative references
3 Terms and definitions
4 Instrumentation
4.1 General
4.2 Calibration
5 Test arrangement
5.1 Selecting source and receiving room
5.2 Mounting conditions
6 Test procedure
6.1 General
6.2 Generation of sound field
6.3 Measurement of average sound pressure level in the source room
6.4 Initial test for suitability of the receiving room
6.5 Measurement of average sound intensity level on the receiving side
6.6 Combining results of multiple sub-areas and loudspeaker positions
6.7 Background noise
6.8 Frequency range of measurements
6.9 Quantities to be determined
7 Expression of results
8 Test report
Annex A Adaptation term Kc (normative)
Annex B Estimated precision and bias of the method (informative)
Annex C Measurement and the effect of flanking transmission (informative)
IEC 61043:1993
ISO 140-10:1991 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 10: Laboratory measurement of airborne sound insulation of small building elements
ISO 140-3:1995 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 3: Laboratory measurements of airborne sound insulation of building elements
IEC 61043:1993
ISO 140-10:1991 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 10: Laboratory measurement of airborne sound insulation of small building elements
ISO 140-3:1995 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 3: Laboratory measurements of airborne sound insulation of building elements
ISO 140-4:1998 Acoustics -- Measurement of sound insulation in buildings and of building elements -- Part 4: Field measurements of airborne sound insulation between rooms
ISO 717-1:1996 Acoustics -- Rating of sound insulation in buildings and of building elements -- Part 1: Airborne sound insulation