EN ISO 17201-4:2006
(Main)Acoustics - Noise from shooting ranges - Part 4: Prediction of projectile sound (ISO 17201-4:2006)
Acoustics - Noise from shooting ranges - Part 4: Prediction of projectile sound (ISO 17201-4:2006)
ISO 17201-4:2006 provides a computational model 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 gives guidance on how to use this source level to calculate the sound exposure level at a receiver position.
ISO 17201-4:2006 is intended for calibres of less than 20 mm, but can also be applied for large calibres. Additionally, the data can be used to compare sound emission from different types of ammunition used with the same weapon. This part of ISO 17201 is meant for weapons used in civil shooting ranges, but is also applicable to military weapons.
Akustik - Geräusche von Schießplätzen - Teil 4: Abschätzung des Geschossgeräusches (ISO 17201-4:2006)
Dieser Teil von ISO 17201 stellt ein Rechenmodell zur Bestimmung des Schallpegels des Geschossgeräusches und dessen Terzspektrum, ausgedrückt als Schallexpositionspegel für Bandmittenfrequenzen von 12,5 Hz bis 10 kHz, bereit. Außerdem werden Leitlinien angegeben, wie dieser Quellpegel zur Berechnung des Schallexpositionspegels am Empfangsort angewendet werden kann.
Dieser Teil von ISO 17201 ist für Kaliber unter 20 mm bestimmt. Dieser Teil kann jedoch auch bei großen Kalibern angewendet werden. Außerdem können die Daten genutzt werden, um die Schallemission unterschiedlicher Munitionsarten zu vergleichen, die in derselben Waffe verwendet werden. Dieser Teil von ISO 17201 ist für Waffen vorgesehen, die auf zivilen Schießplätzen eingesetzt werden, sie kann jedoch auch auf Militärwaffen angewendet werden.
Das Berechnungsverfahren kann als Grundlage für Untersuchungen zur Bewertung von Umgebungsgeräuschen angewendet werden.
Das Prognoseverfahren gilt im Freien, gerade Geschossflugbahnen und stromlinienförmige Projektile. Auf Grund der letztgenannten Bedingung kann die Norm nicht auf Schrote angewendet werden. Die in diesem Teil von ISO 17201 verwendeten Parameter Standardwerte sind für eine Temperatur von 10 °C, eine relative Feuchte von 80 % und einen Druck von 1 013 hPa angegeben. Anhang A kann für Berechnungen bei anderen atmosphärischen Bedingungen angewendet werden. Besonders bei Kalibern unter 20 mm herrschen im Spektrum hochfrequente Komponenten vor. Da die Luftabsorption bei diesen Frequenzkomponenten relativ hoch ist, werden die Berechnungen in Terzbändern durchgeführt, um ein genaueres Ergebnis für die Luftabsorption zu erhalten.
Acoustique - Bruit des stands de tir - Partie 4: Estimation du bruit du projectile (ISO 17201-4:2006)
L'ISO 17201-4:2006 fournit un modèle 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. Elle donne également des lignes directrices sur la manière d'utiliser ce niveau d'émission pour calculer le niveau d'exposition sonore à l'emplacement du récepteur.
L'ISO 17201-4:2006 traite des calibres de moins de 20 mm, mais elle est également applicable à de plus gros calibres. Par ailleurs, les données peuvent permettre de comparer l'émission sonore de différents types de munitions utilisés avec la même arme. L'ISO 17201-4:2006 est destinée aux armes utilisées dans les stands de tir civils mais peut également s'appliquer aux armes militaires.
Akustika – Hrup strelskih poligonov - 4. del: Napoved zvoka izstrelka (ISO 17201-4:2006)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2006
Akustika – Hrup strelskih poligonov - 4. del: Napoved zvoka izstrelka (ISO 17201-
4:2006)
Acoustics - Noise from shooting ranges - Part 4: Prediction of projectile sound (ISO
17201-4:2006)
Akustik - Geräusche von Schießplätzen - Teil 4: Abschätzung des Geschossgeräusches
(ISO 17201-4:2006)
Acoustique - Bruit des stands de tir - Partie 4: Estimation du bruit du projectile (ISO
17201-4:2006)
Ta slovenski standard je istoveten z: EN ISO 17201-4:2006
ICS:
17.140.20
95.020
97.220.10
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 17201-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2006
ICS 95.020; 17.140.20; 97.220.10
English Version
Acoustics - Noise from shooting ranges - Part 4: Prediction of
projectile sound (ISO 17201-4:2006)
Acoustique - Bruit des stands de tir - Partie 4: Estimation Akustik - Geräusche von Schießplätzen - Teil 4:
du bruit du projectile (ISO 17201-4:2006) Bestimmung des Mündungsknalls und
Geschossgeräusches durch Berechnung (ISO 17201-
4:2006)
This European Standard was approved by CEN on 23 March 2006.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,
Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36 B-1050 Brussels
© 2006 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17201-4:2006: E
worldwide for CEN national Members.
Foreword
This document (EN ISO 17201-4:2006) 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 DS.
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 October 2006, and conflicting national
standards shall be withdrawn at the latest by October 2006.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary,
Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland,
Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
Endorsement notice
The text of ISO 17201-4:2006 has been approved by CEN as EN ISO 17201-4:2006 without any
modifications.
INTERNATIONAL ISO
STANDARD 17201-4
First edition
2006-04-01
Acoustics — Noise from shooting
ranges —
Part 4:
Prediction of projectile sound
Acoustique — Bruit des stands de tir —
Partie 4: Estimation du bruit du projectile
Reference number
ISO 17201-4:2006(E)
©
ISO 2006
ISO 17201-4:2006(E)
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ii © ISO 2006 – All rights reserved
ISO 17201-4:2006(E)
Contents Page
Foreword. iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Regions. 5
5 Source description . 6
5.1 Source point . 6
5.2 Source sound exposure level. 6
6 Guidelines for calculating sound exposure levels at receiver locations. 8
6.1 Basic equation . 8
6.2 Calculation of the attenuation terms . 8
7 Uncertainty in source description and propagation . 12
Annex A (informative) Derivation of constants and consideration of barrier and other effects. 13
Annex B (informative) Guidance on prediction uncertainty . 17
Bibliography . 19
ISO 17201-4:2006(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 17201-4 was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
ISO 17201 consists of the following parts, under the general title Acoustics — Noise from shooting ranges:
⎯ Part 1: Determination of muzzle blast by measurement
⎯ Part 2: Estimation of muzzle blast and projectile sound by calculation
⎯ Part 4: Prediction of projectile sound
The following parts are under preparation:
⎯ Part 3: Guidelines for sound propagation calculation
⎯ Part 5: Noise management
The initiative to prepare a standard on impulse noise from shooting ranges was taken by AFEMS, the
Association of European Manufacturers of Sporting Ammunition, in April 1996, by the submission of a formal
proposal to CEN. After consultation in CEN in 1998, CEN/TC 211, Acoustics, asked ISO/TC 43/SC 1, Noise,
to prepare the ISO 17201 series.
iv © ISO 2006 – All rights reserved
ISO 17201-4:2006(E)
Introduction
Shooting sound consists in general of three components: muzzle sound, impact sound and projectile sound.
This part of ISO 17201 deals solely with projectile sound, which only occurs if the projectile moves with
supersonic speed.
It specifies a method for calculating the source sound exposure level of projectile sound. It also gives
guidelines for calculating the propagation of projectile sound as far as it deviates from the propagation of
sound from other sources.
Projectile sound is described as originating from a certain point on the projectile trajectory, the “source point”.
The sound source exposure level is calculated from the geometric properties and the speed of the projectile
along the trajectory. As a result of non-linear effects, the frequency content of the projectile sound exposure
depends on the distance from the source point. This is taken into account. Guidance is given on how the
sound exposure level can be calculated from the sound exposure level at the receiver location, taking into
account geometrical attenuation, attenuation due to the non-linear effects, and atmospheric absorption. In
addition, the effects on the sound exposure level of the decrease of the projectile speed and of atmospheric
turbulence are taken into account.
Projectile sound exposure levels are significant compared to the muzzle sound exposure level in a restricted
region, the Mach region (region II — see Clause 4). Outside this region only diffracted or scattered projectile
sound is received, with considerably lower levels than in the Mach region. Projectile sound behind the Mach
region (region I) is negligible compared to muzzle sound. In this part of ISO 17201, a computational scheme
for the levels in regions II and III is provided. In the bibliographical reference [2], measurements and
calculations were compared for a set of calibres and distances, i.e. from the source point to the receiver
location. For this set, there is a slight tendency of an overestimation of the projectile sound: on average 1,8 dB,
A-weighted.
INTERNATIONAL STANDARD ISO 17201-4:2006(E)
Acoustics — Noise from shooting ranges —
Part 4:
Prediction of projectile sound
1 Scope
This part of ISO 17201 provides a computational model 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 gives guidance on how to use this source level to
calculate the sound exposure level at a receiver position.
This part of ISO 17201 is intended for calibres of less than 20 mm, but can also be applied for large calibres.
Additionally, the data can be used to compare sound emission from different types of ammunition used with
the same weapon. This part of ISO 17201 is meant for weapons used in civil shooting ranges, but is also
applicable to military weapons.
The computational method can be used as a basis for environmental noise assessment studies. The
prediction method applies to outdoor conditions, straight projectile trajectories, and streamlined projectile
shapes. Because of the latter, it cannot be applied to pellets. Default values of parameters used in this part of
ISO 17201 are given for a temperature of 10 °C, 80 % relative humidity, and a pressure of 1 013 hPa.
Annex A can be used for calculations in other atmospheric conditions. Particularly for calibres < 20 mm, the
spectrum is dominated by high frequency components. As air absorption is rather high for these frequency
components, calculations are performed in one-third-octave-bands, in order to allow a more accurate result for
air absorption to be obtained.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
ISO 9613-2, Acoustics — Attenuation of sound during propagation outdoors — Part 2: General method of
calculation
ISO 17201-1, Acoustics — Noise from shooting ranges — Part 1: Determination of muzzle blast by
measurement
Guide to the expression of uncertainty in measurement (GUM). BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML,
first edition, 1993, corrected and reprinted in 1995.
...
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