# ISO 9613-2:1996 — Withdrawn and superseded ISO standards For ISO 9613-2:1996, item title is Acoustics — Attenuation of sound during propagation outdoors — Part 2: General method of calculation; status code is 9599; successor is ISO 9613-2:2024; withdrawn / published date is 1996-12-05, recorded from its source on 2026-08-05. - **Identifier:** ISO 9613-2:1996 _(verified: appears in the quote below)_ - **Item title:** Acoustics — Attenuation of sound during propagation outdoors — Part 2: General method of calculation _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 9613-2:2024 - **Withdrawn / published date:** 1996-12-05 _(verified: appears in the quote below)_ ## What the source says > 20649,IS,,ISO 9613-2:1996,Acoustics — Attenuation of sound during propagation outdoors — Part 2: General method of calculation,Acoustique — Atténuation du son lors de sa propagation à l'air libre — Partie 2: Méthode générale de calcul,1996-12-05,1,['17.140.01'],ISO/TC 43/SC 1,9599,,[74047],"['en','fr']",18,

Describes a method for calculating the attenuation of sound during propagation outdoors in order to predict the levels of environmental noise at a distance from a variety of sources. The method predicts the equivalent continuous A-weighted sound pressure level (as described in ISO 1996) under meteorological conditions.

## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).