IS 9901 : Part 3 : 1981 Measurement of sound insulation in buildings and of building elements: Part 3 Laboratory measurements of airborne sound insulation of building elements

1 Scope

1.1 This standard (Part III) specifies a laboratory method ofmeasuring the airborne sound insulation of building elements suchas walls, floors, doors, windows, facade elements and facades.

2 References

IS 2 :1960Rules for rounding off numerical values

IS 1885 : Part III : Sec 8 :1974 Electrotechnical vocabulary:Part III Acoustics,Section 8 Architectural acoustics

IS 6964 :1973Octave, half-octave and third-octaveband filters for analysis of soundand vibrations

IS 8225 :1976Method of measurement of absorptioncoefficient in a reverberation room

IS 9901 : Part I :1981Measurement of sound insulation inbuildings and of building elements: Part I Requirements for laboratories