IS 9901 : Part 2 : 1981 Measurement of sound insulation in buildings and of building elements: Part 2 Statement of precision requirements

1 Scope

1.1 This standard (Part II) lays down procedures for assessinguncertainty in the acoustical measurements described in Parts III to VIII of IS 9901 due to non-systematic influences.

1.2 The results may be used for checking different measuringarrangements in one laboratory and for comparing such conditions indifferent laboratories or in field situations. Minimum values forthe precision required when carrying out tests according to series(Parts III to VIII) of IS 9901 are stated in 4.

2 References

IS 2 :1960Rules for rounding off numericalvalues

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

IS9901Measurement of sound insulation inbuildings and of building elements