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Norm
ÖNORM EN ISO 9614-1
Issue date: 1995 10 01
Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993)
1.1 This part of IS0 9614 specifies a method for
measuring the component of sound intensity normal
to a measurement surface which is chosen so as to
enclose the noise ...
Withdrawn: 2010 01 01
§ Legal References
Publisher:
Austrian Standards International
Format:
Digital | 30 Pages
Language:
German
| English
Currently valid:
Optionally co-design standards:
ICS
1.1 This part of IS0 9614 specifies a method for
measuring the component of sound intensity normal
to a measurement surface which is chosen so as to
enclose the noise source(s) of which the sound power
level is to be determined. The one-octave, one-thirdoctave
or band-limited weighted sound power level is
calculated from the measured values. The method is
applicable to any source for which a physically stationary
measurement surface can be defined, and on
which the noise generated by the source is stationary
in time (as defined in 3.13). The source is defined by
the choice of measurement surface. The method is
applicable in situ, or in special purpose test environments.
I.2 This part of IS0 9614 is applicable to sources
situated in any environment which is neither so variable
in time as to reduce the accuracy of the measurement
of sound intensity to an unacceptable
degree, nor subjects the intensity measurement
probe to gas flows of unacceptable speed or unsteadiness
(see 5.3 and 5.4).
In some cases, it will be found that the test conditions
are too adverse to allow the requirements of this part
of IS0 9614 to be met. In particular, extraneous noise
levels may vary to an excessive degree during the
test. In such cases, the method given in this part of
IS0 9614 is not suitable for the determination of the
sound power level of the source.
NOTE 1 Other methods, e.g. determination of sound
power levels from surface vibration levels as described in
lSO/TR 7849, may be more suitable.
I.3 This part of IS0 9614 specifies certain ancillary
procedures, described in annex B, to be followed in
conjunction with the sound power determination. The
results are used to indicate the quality of the determination,
and hence the grade of accuracy. If the indicated
quality of the determination does not meet
the requirements of this part of IS0 9614, the test
procedure should be modified in the manner i (...abbreviated)
ÖNORM EN ISO 9614-1
2010 01 01
Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Mea...
Norm
ÖNORM EN ISO 9614-1
1995 10 01
Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Mea...
Norm
↖
Norm
Issue date :
1986 09 18
Precision of test methods — Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests
Norm
Issue date :
2010 01 01
Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993)
Norm
Issue date :
1993 06 03
Acoustics — Determination of sound power levels of noise sources using sound intensity — Part 1: Measurement at discrete points