M00019833
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ISO DIS 12354-4 2016 Edition, January 28, 2016 BUILDING ACOUSTICS - ESTIMATION OF ACOUSTIC PERFORMANCE OF BUILDINGS FROM THE PERFORMANCE OF ELEMENTS - PART 4: TRANSMISSION OF INDOOR SOUND TO THE OUTSIDE
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Availability date: 07/14/2021
Description / Abstract:
This draft European standard describes a calculation model for
the sound power level radiated by the envelope of a building due to
airborne sound inside that building, primarily by means of measured
sound pressure levels inside the building and measured data which
characterize the sound transmission by the relevant elements and
openings in the building envelope. These sound power levels,
together with those of other sound sources in or in front of the
building envelope, form the basis for the calculation of the sound
pressure level at a chosen distance from a building as a measure
for the acoustic performance of buildings.
The prediction of the inside sound pressure level from knowledge
of the indoor sound sources is outside the scope of this draft
European standard.
The prediction of the outdoor sound propagation is outside the
scope of this draft European standard.
NOTE For simple propagation conditions an approach is given for
the estimation of the sound pressure level in the informative Annex
E. This draft European standard describes the principles of the
calculation model, lists the relevant quantities and defines its
applications and restrictions. It is intended for acoustical
experts and provides the framework for the development of
application documents and tools for other users in the field of
building construction, taking into account local circumstances.
This revised edition has been updated mainly for normative
references, and otherwise kept as it was in the first edition.