SIST EN ISO 17201-4:2025
(Main)Acoustics - Noise from shooting ranges - Part 4: Calculation of projectile sound (ISO 17201-4:2025)
Acoustics - Noise from shooting ranges - Part 4: Calculation of projectile sound (ISO 17201-4:2025)
This document specifies computational methods for determining the acoustical source level of projectile sound and its one-third octave band spectrum, expressed as the sound exposure level for nominal mid-band frequencies from 12,5 Hz to 10 kHz. It also specifies a method on how to use this source level to calculate the sound exposure level at a receiver position.
Results obtained with this document can be used as a basis for assessment of projectile sound from shooting ranges. Additionally, the data can be used to determine sound emission or immission from different types of ammunition and weapons. The prediction methods are applicable to outdoor conditions and straight projectile trajectories. Two computational methods are given to determine the acoustical source level: one for streamlined projectile shapes and one for non-streamlined shapes, such as pellets.
Akustik - Geräusche von Schießplätzen - Teil4: Berechnung des Geschossgeräusches (ISO 17201-4:2025)
Dieses Dokument legt Berechnungsverfahren zur Bestimmung des Quellschallpegels des Geschossgeräusches und dessen Terzspektrums, ausgedrückt als Schallexpositionspegel für Nenn-Mittenfrequenzen von 12,5 Hz bis 10 kHz, fest. Außerdem legt es ein Verfahren fest, wie dieser Quellpegel zur Berechnung des Schallexpositionspegels an einer bestimmten Empfängerposition anzuwenden ist.
Die nach diesem Dokument erhaltenen Ergebnisse können als Grundlage für die Beurteilung des von Schießplätzen ausgehenden Geschossgeräusches herangezogen werden. Außerdem können die Daten genutzt werden, um die Schallemission oder -immission unterschiedlicher Munitions- und Waffenarten zu bestimmen. Die Vorhersageverfahren sind auf Freiluftbedingungen und gerade Geschossflugbahnen anwendbar. Es sind zwei Berechnungsverfahren zur Bestimmung des Quellschallpegels angegeben: eines für stromlinienförmige und eines für nicht stromlinienförmige Geschosse, wie z. B. Schrotkugeln bzw. Schrote.
Acoustique - Bruit des stands de tir - Partie 4: Calcul du bruit du projectile (ISO 17201-4:2025)
Le présent document spécifie des méthodes de calcul permettant de déterminer le niveau d’émission acoustique du bruit du projectile et son spectre de tiers d’octave exprimé en tant que niveau d’exposition sonore pour des fréquences nominales à mi-bande comprises entre 12,5 Hz et 10 kHz. Il spécifie également une méthode d’utilisation de ce niveau d’émission pour calculer le niveau d’exposition sonore à l’emplacement du récepteur.
Les résultats obtenus avec le présent document peuvent être utilisés comme base pour l’évaluation du bruit des projectiles provenant des stands de tir. Par ailleurs, les données peuvent permettre de déterminer l’émission ou l’immission sonore de différents types de munitions et d’armes. Les méthodes de prévision sont applicables aux conditions extérieures et aux trajectoires de projectile rectilignes. Deux méthodes de calcul sont proposées pour déterminer le niveau d’émission acoustique: l’une pour les formes de projectiles aérodynamiques et l’autre pour les formes non aérodynamiques, telles que la grenaille.
Akustika - Hrup s strelišč - 4. del: Izračun zvoka izstrelka (ISO 17201-4:2025)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-oktober-2025
Nadomešča:
SIST EN ISO 17201-4:2006
Akustika - Hrup s strelišč - 4. del: Izračun zvoka izstrelka (ISO 17201-4:2025)
Acoustics - Noise from shooting ranges - Part 4: Calculation of projectile sound (ISO
17201-4:2025)
Akustik - Geräusche von Schießplätzen - Teil4: Berechnung des Geschossgeräusches
(ISO 17201-4:2025)
Acoustique - Bruit des stands de tir - Partie 4: Calcul du bruit du projectile (ISO 17201-
4:2025)
Ta slovenski standard je istoveten z: EN ISO 17201-4:2025
ICS:
17.140.20 Emisija hrupa naprav in Noise emitted by machines
opreme and equipment
95.020 Vojaštvo na splošno Military in general
97.220.10 Športni objekti Sports facilities
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 17201-4
EUROPEAN STANDARD
NORME EUROPÉENNE
August 2025
EUROPÄISCHE NORM
ICS 17.140.20; 95.020; 97.220.10 Supersedes EN ISO 17201-4:2006
English Version
Acoustics - Noise from shooting ranges - Part 4:
Calculation of projectile sound (ISO 17201-4:2025)
Acoustique - Bruit des stands de tir - Partie 4: Calcul du Akustik - Geräusche von Schießplätzen - Teil4:
bruit du projectile (ISO 17201-4:2025) Berechnung des Geschossgeräusches (ISO 17201-
4:2025)
This European Standard was approved by CEN on 11 July 2025.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17201-4:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 17201-4:2025) has been prepared by Technical Committee ISO/TC 43
"Acoustics" in collaboration with Technical Committee CEN/TC 211 “Acoustics” the secretariat of which
is held by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by February 2026, and conflicting national standards
shall be withdrawn at the latest by February 2026.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 17201-4:2006.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 17201-4:2025 has been approved by CEN as EN ISO 17201-4:2025 without any
modification.
International
Standard
ISO 17201-4
Second edition
Acoustics — Noise from shooting
2025-07
ranges —
Part 4:
Calculation of projectile sound
Acoustique — Bruit des stands de tir —
Partie 4: Calcul du bruit du projectile
Reference number
ISO 17201-4:2025(en) © ISO 2025
ISO 17201-4:2025(en)
© ISO 2025
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
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Published in Switzerland
ii
ISO 17201-4:2025(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Projectile sound . 5
4.1 General .5
4.2 Regions .5
4.3 Spectrum of an N-wave .6
5 Source description . 7
5.1 Source point .7
5.2 Source sound exposure level for streamlined projectiles.7
5.3 Source sound exposure level for non-streamlined projectiles .8
5.4 Spectrum of the source sound exposure level .11
6 Calculating the sound exposure level at a receiver location .11
6.1 Basic formula .11
6.2 Calculation of the attenuation terms . 12
6.2.1 Geometric attenuation . 12
6.2.2 Non-linear attenuation . .14
6.2.3 Non-linear shift of the spectrum . 15
6.2.4 Atmospheric absorption, excess attenuation and barrier effects .16
7 Uncertainty in source description and propagation .16
7.1 Overview .16
7.2 Uncertainties in source description .17
7.2.1 General .17
7.2.2 Source point location .17
7.2.3 Broadband source sound exposure level for streamlined projectiles .17
7.2.4 Source sound exposure level for non-streamlined projectiles .18
7.2.5 Characteristic frequency of the N-wave .19
7.2.6 Spectrum of the source sound exposure level .19
7.3 Uncertainties in determining the sound exposure level at a receiver location .19
7.3.1 General .19
7.3.2 The uncertainties at a receiver location for non-streamlined projectiles .19
Annex A (informative) Derivation of constants and consideration of barrier and other effects .20
Annex B (informative) Calculation of projectile sound for projectiles on ballistic trajectories .24
Annex C (informative) Estimation of projectile velocity change.27
Annex D (informative) Calculation examples .30
Bibliography . 41
iii
ISO 17201-4:2025(en)
Foreword
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The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
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patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the
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