IS 4758 : 1968 Methods of Measurement of Noise Emitted by Machines

1 Scope

1.1 This standard deals with the procedures to be followed inthe objective measurement of the noise emitted by machines. Theseprocedures are not necessarily applicable to noise of an impulsivecharacter.

2 References

IS 2 :1960 Rules for rounding offnumerical values

IS 2264 : 1963Preferred frequencies for acoustical measurements

IS 3932 : 1966Specification for sound level meters for general purposesuse