BS 7703-1(1993) : 1993 AMD 8934

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Definitions
4 General requirements
5 Acoustic environment
6 Instrumentation
7 Installation and operation of the source
8 Measurement of normal sound intensity component
      levels
9 Calculation of sound power level
10 Information to be reported
Tables
1 Bias error factor, K
2 Uncertainty in the determination of sound power
      levels
B.1 Error factor
B.2 Values for factor C
B.3 Actions to be taken to increase grade of accuracy
      of determination
Figures
1 Preferred initial measurement surfaces
B.1 Scheme for the procedure for achieving the desired
      grade of accuracy
Annexes
A (normative) Calculation of field indicators
B (normative) Procedure for achieving a desired grade
      of accuracy
C (informative) Effects of airflow on measurement of
      sound intensity
D (informative) Effect of sound absorption within the
      measurement surface
E (informative) Bibliography

Specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the noise sources of which the sound power level is to be determined. Coverage includes acoustic environment, instrumentation, calculation of sound power level, and information to be reported. Also gives definitions, tables, diagrams and annexes. BS AMD 8934 RENUMBERS THIS STANDARD