EN ISO 3745:2003

Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and semi-anechoic rooms (ISO 3745:2003)

Specification of two laboratory methods for determining the sound power level of a source. It gives requirements for the test room, as well as the source location, operating conditions and instrumentation. Techniques are specified for obtaining an estimate of the surface sound pressure level from which the weighted sond power level of the source as well as the sound power level in octave or one-third octave bands may be calculated. It is intended to prescribe techniques for acoustical measurments that may be used in test codes for particular types of equipment.

Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen aus Schalldruckmessungen - Verfahren der Genauigkeitsklasse 1 für reflexionsarme Räume und Halbräume (ISO 3745:2003)

1.1   Diese Internationale Norm legt ein Verfahren zur Messung der Schalldruckpegel auf einer die Geräusch-quelle einhüllenden Messfläche (Hüllfläche) in reflexionsarmen Räumen und Halbräumen fest, um den Schallleistungs- oder Schallenergiepegel der Geräuschquelle zu bestimmen. Sie enthält Anforderungen an die Prüf-umgebung und die Messgeräte sowie Verfahren zur Ermittlung des Messflächen-Schalldruckpegels, aus dem der Schallleistungs- bzw. Schallenergiepegel berechnet wird. Die Ergebnisse haben die Genau-igkeits-klasse 1.
1.2   Das in dieser Internationalen Norm festgelegte Verfahren ist für die Messung aller Geräuscharten geeignet.
Die Geräuschquelle kann ein Gerät, eine Maschine, ein Bauteil oder eine Baugruppe sein. Die maximale Größe der zu untersuchenden Geräuschquelle hängt von den Anforderungen nach 8.2 bezüglich des Radius der gedachten Kugel (oder Halbkugel) ab, die als einhüllende Messfläche verwendet wird.
1.3   Der für Messungen nach dieser Internationalen Norm erforderliche Prüfraum ist entweder ein reflexions-armer Raum (siehe 3.12) oder ein reflexionsarmer Halbraum (siehe 3.14).

Acoustique - Détermination des niveaux de puissance acoustique émis par les sources de bruit à partir de la pression acoustique - Méthodes de laboratoire pour les salles anéchoïques et semi-anéchoïques (ISO 3745:2003)

Akustika - Ugotavljanje ravni zvočnih moči virov hrupa - Precizijska metoda za gluhe in polgluhe prostore (ISO 3745:2003)

General Information

• Status: Withdrawn
• Publication Date: 30-Nov-2003
• Withdrawal Date: 28-Jul-2009
• ICS: 17.120.01 - Measurement of fluid flow in general
• Technical Committee: CEN/TC 211 - Acuostics
• Drafting Committee: CEN/TC 211 - Acuostics
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 29-Jul-2009
• Completion Date: 29-Jul-2009
• Directive: 98/37/EC - Machinery
• Mandate: M/BC/CEN/88/13 - Standardization request to CEN/CENELEC relating to machinery
• Ref Project: SIST EN ISO 3745:2004 - Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and semi-anechoic rooms (ISO 3745:2003)

Relations

• Replaced By: EN ISO 3745:2009 - Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and semi-anechoic rooms (ISO 3745:2003)
• Effective Date: 24-Dec-2008
• Corrected By: EN ISO 3745:2003/AC:2006 - Acoustics - Determination of sound power levels of noise sources using sound pressure - Precision methods for anechoic and hemi-anechoic rooms (ISO 3745:2003)
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 3745:2004
01-september-2004
$NXVWLND8JRWDYOMDQMHUDYQL]YRþQLKPRþLYLURYKUXSD3UHFL]LMVNDPHWRGD]D
JOXKHLQSROJOXKHSURVWRUH,62
Acoustics - Determination of sound power levels of noise sources using sound pressure -
Precision methods for anechoic and semi-anechoic rooms (ISO 3745:2003)
Akustik - Bestimmung der Schallleistungspegel von Geräuschquellen aus
Schalldruckmessungen - Verfahren der Genauigkeitsklasse 1 für reflexionsarme Räume
und Halbräume (ISO 3745:2003)
Acoustique - Détermination des niveaux de puissance acoustique émis par les sources
de bruit a partir de la pression acoustique - Méthodes de laboratoire pour les salles
anéchoiques et semi-anéchoiques (ISO 3745:2003)
Ta slovenski standard je istoveten z: EN ISO 3745:2003
ICS:
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
91.120.20 $NXVWLNDYVWDYEDK=YRþQD Acoustics in building. Sound
L]RODFLMD insulation
SIST EN ISO 3745:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 3745:2004

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SIST EN ISO 3745:2004
EUROPEAN STANDARD
EN ISO 3745
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2003
ICS 17.140.01
English version
Acoustics - Determination of sound power levels of noise
sources using sound pressure - Precision methods for anechoic
and hemi-anechoic rooms (ISO 3745:2003)
Acoustique - Détermination des niveaux de puissance Akustik - Bestimmung der Schallleistungspegel von
acoustique émis par les sources de bruit à partir de la Geräuschquellen aus Schalldruckmessungen - Verfahren
pression acoustique - Méthodes de laboratoire pour les der Genauigkeitsklasse 1 für reflexionsarme Räume und
salles anéchoïques et semi-anéchoïques (ISO 3745:2003) Halbräume (ISO 3745:2003)
This European Standard was approved by CEN on 3 November 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 3745:2003 E
worldwide for CEN national Members.

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SIST EN ISO 3745:2004
EN ISO 3745:2003 (E)
CORRECTED  2004-03-03
Foreword
This document (EN ISO 3745:2003) 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 June 2004, and conflicting national
standards shall be withdrawn at the latest by June 2004.
This document has been prepared under a mandate given to CEN by the European Commission
and the European Free Trade Association, and supports essential requirements of EU
Directive(s).
For relationship with EU Directive(s), see informative Annex ZB, which is an integral part of this
document.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 3745:2003 has been approved by CEN as EN ISO 3745:2003 without any
modifications.
NOTE Normative references to International Standards are listed in Annex ZA (normative).
2

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SIST EN ISO 3745:2004
EN ISO 3745:2003 (E)
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, p
...