NF EN ISO 12354-4

NF EN ISO 12354-4

August 2017
Standard Current

Building acoustics - Estimation of acoustic performance of buildings from the performance of elements - Part 4 : transmission of indoor sound to the outside

ISO 12354-4:2017 specifies a calculation model to estimate 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 document. The prediction of the outdoor sound propagation is outside the scope of this document. NOTE For simple propagation conditions an approach is given for the estimation of the sound pressure level in Annex E. ISO 12354-4:2017 describes the principles of the calculation model, lists the relevant quantities and defines its applications and restrictions.

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Collections

National standards and national normative documents

Publication date

August 2017

Number of pages

33 p.

Reference

NF EN ISO 12354-4

ICS Codes

91.120.20   Acoustics in building. Sound insulation

Classification index

S31-004-4

Print number

1

International kinship

ISO 12354-4:2017

European kinship

EN ISO 12354-4:2017
Sumary
Building acoustics - Estimation of acoustic performance of buildings from the performance of elements - Part 4 : transmission of indoor sound to the outside

ISO 12354-4:2017 specifies a calculation model to estimate 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 document.

The prediction of the outdoor sound propagation is outside the scope of this document.

NOTE For simple propagation conditions an approach is given for the estimation of the sound pressure level in Annex E.

ISO 12354-4:2017 describes the principles of the calculation model, lists the relevant quantities and defines its applications and restrictions.

Replaced standards (1)
NF EN 12354-4
December 2000
Standard Cancelled
Building acoustics - Estimation of acoustic performance of buildings from the performance of elements - Part 4 : transmission of indoor sound to the outside

Le présent document décrit un modèle de calcul du niveau de puissance acoustique rayonné par l'enveloppe d'un bâtiment du fait du bruit aérien à l'intérieur de ce bâtiment principalement à l'aide des niveaux de pression acoustique mesurés à l'intérieur du bâtiment et des données mesurées qui caractérisent la transmission acoustique des éléments et ouvertures de l'enveloppe du bâtiment. La prévision du niveau de pression acoustique à l'intérieur à partir de la connaissance des sources sonores intérieures n'entre pas dans le domaine d'application de la présente norme européenne. La prévision de la propagation du bruit à l'extérieur n'entre pas dans le domaine d'application de la présente norme européenne. On trouvera les grands principes de calcul, la liste des grandeurs significatives, les applications et leurs limites.

Table of contents
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  • Avant-propos
  • 1
  • 2 Références normatives
  • 3 Termes et définitions
  • 4 Modèle de calcul
  • 5 Précision
  • Annexe A (normative) Liste des symboles
  • Annexe B (informative) Champ acoustique intérieur
  • Annexe C (informative) Indice d'affaiblissement acoustique
  • Annexe D (informative) Directivité du rayonnement acoustique
  • Annexe E (informative) Modèle simplifié de prévision des niveaux de pression acoustique extérieurs
  • Annexe F (informative) Application du modèle aux indices uniques
  • Annexe G (informative) Exemple de calcul
  • Bibliographie
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