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BS EN ISO 14257:2001

Current
Current

The latest, up-to-date edition.

Acoustics. Measurement and parametric description of spatial sound distribution curves in workrooms for evaluation of their acoustical performance
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

25-01-2002

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Sound distribution in a room
  4.1 General
  4.2 Spatial sound distribution curves
5 Measurement of the spatial sound distribution curve
  5.1 Specifications regarding the sound source used
      for the test
  5.2 Measurement instrumentation
  5.3 Measurement path and points
  5.4 Measurement procedure
  5.5 Representation of the measured data
6 Parametric description of the measured spatial sound
  distribution curve in view of evaluation of the acoustical
  performance of workrooms
  6.1 General
  6.2 Distance ranges
  6.3 Determination of the rate of spatial decay of sound
      pressure levels per distance doubling, DL[2]
  6.4 Determination of the excess of sound pressure level
      with respect to a reference sound distribution curve,
      DL[f]
  6.5 Evaluation of measured data
7 Information to be recorded and reported
Annexes
A (normative) Performance requirements for the sound source
  to be used for the test
B (normative) Correction of measured sound distribution curves
  to account for differences in ground reflections and
  source directivity
C (informative) Example of use of this International Standard
Bibliography

Gives a method for measuring the spatial sound distribution curve(s) of a given workroom. Applies to workrooms of any shape and any dimensions provided that the number of microphone positions allows the regression calculation to be performed.

Committee
EH/1/4
DevelopmentNote
Supersedes 99/561983 DC. (02/2002)
DocumentType
Standard
Pages
38
PublisherName
British Standards Institution
Status
Current
Supersedes

ISO 3744:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for an essentially free field over a reflecting plane
ISO 6926:2016 Acoustics Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
ISO 3741:2010 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Precision methods for reverberation test rooms
ISO 3745:2012 Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for anechoic rooms and hemi-anechoic rooms
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters
IEC 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters
IEC 60804:2000 Integrating-averaging sound level meters

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