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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
Published date

10-15-2001

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
Annex A (normative) Performance requirements for the sound source
        to be used for the test
Annex B (normative) Correction of measured sound distribution curves
        to account for differences in ground reflections and
        source directivity
Annex 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
CEN/TC 211
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

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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/TR 11690-3:1997 Acoustics Recommended practice for the design of low-noise workplaces containing machinery Part 3: Sound propagation and noise prediction in workrooms
ISO 140-3:1995 Acoustics — Measurement of sound insulation in buildings and of building elements — Part 3: Laboratory measurements of airborne sound insulation of building elements
ISO 11690-1:1996 Acoustics Recommended practice for the design of low-noise workplaces containing machinery Part 1: Noise control strategies
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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