ISO/FDIS 9613-2

Acoustics — Attenuation of sound during propagation outdoors — Part 2: Engineering method for the prediction of sound pressure levels outdoors

Acoustique — Atténuation du son lors de sa propagation à l'air libre — Partie 2: Méthode d'ingénierie pour la prédiction des niveaux de pression acoustique en extérieur

General Information

• Status: Not Published
• ICS: 17.140.01 - Acoustic measurements and noise abatement in general
• Technical Committee: ISO/TC 43/SC 1 - Noise
• Drafting Committee: ISO/TC 43/SC 1/WG 61 - Revision of ISO 9613-2 - Attenuation of sound during propagation outdoors
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 16-Oct-2023
• Completion Date: 16-Oct-2023

Relations

• Revises: ISO 9613-2:1996 - Acoustics — Attenuation of sound during propagation outdoors — Part 2: General method of calculation
• Effective Date: 24-Jun-2017

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 9613-2
ISO/TC 43/SC 1
Acoustics — Attenuation of sound
Secretariat: DIN
during propagation outdoors —
Voting begins on:
2023-10-16
Part 2:
Voting terminates on:
Engineering method for the prediction
2023-12-11
of sound pressure levels outdoors
Acoustique — Atténuation du son lors de sa propagation à l'air
libre —
Partie 2: Méthode d'ingénierie pour la prédiction des niveaux de
pression acoustique en extérieur
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 9613-2:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 9613-2:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 9613-2
ISO/TC 43/SC 1
Acoustics — Attenuation of sound
Secretariat: DIN
during propagation outdoors —
Voting begins on:
Part 2:
Voting terminates on:
Engineering method for the prediction
of sound pressure levels outdoors
Acoustique — Atténuation du son lors de sa propagation à l'air
libre —
Partie 2: Méthode d'ingénierie pour la prédiction des niveaux de
pression acoustique en extérieur
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 9613-2:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

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ISO/FDIS 9613-2:2023(E)
Contents Page
Foreword .iv
Introduction . vi
1 Scope . 1
2 Normative references . 2
3 Terms, definitions, symbols and units . 2
3.1 Terms and definitions . 2
3.2 Symbols and units . 3
4 Source description .4
5 Meteorological conditions .6
6 Basic formulae . 7
7 Calculatio
...

ISO/FDIS 9613-2:2023(E) Style Definition: Heading 1: Indent: Left: 0 pt, First
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ISO TC 43/SC 1
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at 18 pt
Date: 2023-09-12xx
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Acoustics — Attenuation of sound during propagation outdoors — Part 2:
Style Definition: Heading 5: Font: Bold
Engineering method for the prediction of sound pressure levels outdoors
Style Definition: Heading 6: Font: Bold
Acoustique — Atténuation du son lors de sa propagation à l'air libre — Partie 2: Méthode
Style Definition: ANNEX
d'ingénierie pour la prédiction des niveaux de pression acoustique en extérieur
Style Definition: AMEND Terms Heading: Font: Bold
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Font: Bold
Formatted: Font: Not Bold

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ISO/FDIS 9613-2:2023(E)
© ISO 2023
Commented [eXtyles1]: The reference is to a withdrawn
standard which has been replaced

All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part
ISO 20344, Personal protective equipment — Test methods
of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or
for footwear
mechanical, including photocopying, or posting on the internet or an intranet, without prior written
Formatted: Pattern: Clear
permission. Permission can be requested from either ISO at the address below or ISO’s member body
in the country of the requester.
Formatted: Pattern: Clear
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 9613-2:2023(E)
Contents
Foreword . v
Introduction . vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Source description . 4
5 Meteorological conditions . 6
6 Basic formulae . 6
7 Calculation of the attenuation terms . 8
7.1 Geometric divergence (A ) . 8
div
7.2 Atmospheric absorption . 9
7.3 Ground effect (A ) . 9
gr
7.3.1 General method of calculation . 9
7.3.2 Simplified method of calculation for A-weighted sound pressure levels . 12
7.4 Screening (A ) . 13
bar
7.4.1 General method of calculation . 13
7.4.2 Alternative method to calculate the path length difference z with one edge or with
more parallel edges . 17
7.4.3 Lateral diffraction around vertical edges . 19
7.4.4 Combining vertical and lateral diffractions and limitations . 20
7.5 Reflections . 20
7.5.1 General .
...