National foreword
Cooperating organizations
Guide
Foreword
0 Introduction
1 Scope and field of application
2 References
3 Selection of appropriate International Standard for
determination of sound power level
4 Preparation of noise test codes
Annexes
A Synopses of basic International Standards on sound
power level determinations
B Factors affecting choice of measurement method
C Acoustical test environments
D Preferred format for reporting octave and third-
octave band sound power levels
Tables
1 International Standards specifying various methods
for determining the sound power levels, of machines
and equipment
2 Uncertainty in determining sound power levels,
expressed at the largest value of the standard
deviation of decibels
3 Factors influencing the choice of the method