BS EN ISO 14257:2001
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
25-01-2002
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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 |
| Standards | Relationship |
| SN EN ISO 14257 : 2001 | Identical |
| NBN EN ISO 14257 : 2002 | Identical |
| NS EN ISO 14257 : 1ED 2002 | Identical |
| UNE-EN ISO 14257:2002 | Identical |
| EN ISO 14257:2001 | Identical |
| I.S. EN ISO 14257:2002 | Identical |
| UNI EN ISO 14257 : 2004 | Identical |
| NF EN ISO 14257 : 2002 | Identical |
| DIN EN ISO 14257:2011-11 | Identical |
| NEN EN ISO 14257 : 2001 | Identical |
| ISO 14257:2001 | Identical |
| 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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