I.S. EN ISO 14257:2002
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
Hardcopy , PDF
English
01-01-2002
For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
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
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