Standard

Track updates

AS 1191-2002

[Current]

Acoustics — Method for laboratory measurement of airborne sound transmission insulation of building elements

Included in Acoustics in Buildings set

Provides a method for the measurement of airborne sound reduction index to building partitions such as walls, floor/ceiling assemblies, doors, windows and other space dividing elements.

Published: 24/04/2002

Pages: 16

Table of contents

Cited references

Content history

Table of contents

Header

About this publication

Preface

1 Scope

2 Application

2.1 General

2.2 Building Code of Australia

3 Referenced documents

4 Definitions

5 Building facilities

5.1 General

5.2 Diffusion

5.2.1 Requirements for test rooms

5.2.2 Room volume

5.2.3 Room dimensions

5.2.4 Sound absorption coefficients of surfaces

5.3 Flanking transmission

6 Test specimen

6.1 Size and nature of specimen

6.2 Specimen mounting

6.2.1 General

6.2.2 Filler walls

6.3 Ageing of specimen

7 Electro-acoustic equipment

7.1 General

7.2 Microphones and measuring systems

7.2.1 Calibration and performance checks

7.2.2 Cross-talk

7.3 Filters

7.3.1 Measurement filter

7.3.2 Source filter

8 Measurement procedure

8.1 General

8.2 Sound generation

8.3 Microphone

8.4 Background noise

8.5 Test frequencies

8.6 Averaging times

8.6.1 Discrete microphone position

8.6.2 Continuous microphone traverse

8.7 Equivalent absorption area

9 Statement of results

9.1 Calculations

9.2 Test report

Appendix A

A1 Diffusers

A2 Check of diffusivity

Appendix B

B1 General

B2 Methods of estimating precision

B2.1 Discrete microphone positions or equivalent

B2.2 Continuous averaging over one whole microphone traverse

B3 Recommended goals for precision

Appendix C

Appendix D

Appendix E

E1 General

E2 Sampling of the sound field

E3 Averaging time

E4 Reverberation time

E5 Precision

Cited references in this standard

ISO 140-3:1995/Amd 1:2004

[Superseded]

Acoustics - Measurement of sound insulation in buildings and of building elements - Part 3: Laboratory measurements of airborne sound insulation of building elements - Amendment 1: Installation guidelines for lightweight twin leaf partitions

AS/NZS 4476:1997

[Available Superseded]

Acoustics — Octave-band and fractional-octave-band-filters

AS/NZS 1276.1:1999

[Superseded]

Acoustics — Rating of sound insulation in buildings and of building elements, Part 1: Airborne sound insulation

AS 1259.2-1990

[Superseded]

Acoustics — Sound level meters, Part 2: Integrating — Averaging

AS 1259.1-1990

[Available Superseded]

Acoustics - Sound level meters, Part 1: Non-integrating