iTeh StandardsiTeh Standards
EURUSD
Your shopping cart is empty.
ISO

ISO 26101-2:2024

(Main)

Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction

Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction

This document specifies methods for qualifying an environment that approximates to an acoustic free field near one or more reflecting planes. The goal of the qualification is to determine the environmental correction K2 , which is used to correct for reflected sound when determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in such an environment. In practice, the K2 value determined will be a function of both the reflected sound from the test environment and the shape and size of the measurement surface used for the K2 determination. For the purposes of this document and the documents that refer to it, the differences between K2 values determined with different measurement surfaces are assumed to be included in the stated measurement uncertainty for the test method.

Acoustique — Méthodes d’essai pour la qualification de l'environnement acoustique — Partie 2: Détermination de la correction d’environnement

Le présent document spécifie des méthodes de qualification d’un environnement qui se rapproche d’un champ acoustique libre à proximité d’un ou de plusieurs plans réfléchissants. L’objectif de la qualification est de déterminer la correction d’environnement K2 , qui est utilisée pour corriger le bruit réfléchi lors de la détermination du niveau de puissance acoustique ou du niveau d’énergie acoustique d’une source de bruit à partir des niveaux de pression acoustique mesurés sur une surface enveloppant la source de bruit (machine ou équipement) dans un tel environnement. En pratique, la valeur K2 déterminée dépend aussi bien du son réfléchi par l’environnement d’essai que de la forme et de la taille de la surface de mesure utilisée pour la détermination de K2 . Pour les besoins du présent document et des documents qui y font référence, les différences entre les valeurs de K2 déterminées avec différentes surfaces de mesure sont réputées être incluses dans l’incertitude de mesure déclarée pour la méthode d’essai.

General Information

Status
Published
Publication Date
05-Jun-2024
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 - Noise
Current Stage
6060 - International Standard published
Start Date
06-Jun-2024
Due Date
28-Jan-2024
Completion Date
06-Jun-2024
Ref Project

Relations

Consolidates
ISO 16129:2018 - Surface chemical analysis — X-ray photoelectron spectroscopy — Procedures for assessing the day-to-day performance of an X-ray photoelectron spectrometer
Effective Date
06-Jun-2022

Buy Standard

ISO 26101-2:2024 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:6. 06. 2024ISO 26101-2:2024 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:6. 06. 2024
PreviousNext
Standard
ISO 26101-2:2024 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:6. 06. 2024
English language
15 pages
sale 15% off
Preview
sale 15% off
Preview
ISO 26101-2:2024 - Acoustique — Méthodes d’essai pour la qualification de l'environnement acoustique — Partie 2: Détermination de la correction d’environnement Released:6. 06. 2024ISO 26101-2:2024 - Acoustique — Méthodes d’essai pour la qualification de l'environnement acoustique — Partie 2: Détermination de la correction d’environnement Released:6. 06. 2024
PreviousNext
Standard
ISO 26101-2:2024 - Acoustique — Méthodes d’essai pour la qualification de l'environnement acoustique — Partie 2: Détermination de la correction d’environnement Released:6. 06. 2024
French language
17 pages
sale 15% off
Preview
sale 15% off
Preview
ISO/FDIS 26101-2 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:21. 02. 2024ISO/FDIS 26101-2 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:21. 02. 2024
PreviousNext
Draft
ISO/FDIS 26101-2 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:21. 02. 2024
English language
15 pages
sale 15% off
Preview
sale 15% off
Preview
REDLINE ISO/FDIS 26101-2 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:21. 02. 2024REDLINE ISO/FDIS 26101-2 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:21. 02. 2024
PreviousNext
Draft
REDLINE ISO/FDIS 26101-2 - Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction Released:21. 02. 2024
English language
15 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (Sample)

International
Standard
ISO 26101-2
First edition
Acoustics — Test methods for
2024-06
the qualification of the acoustic
environment —
Part 2:
Determination of the environmental
correction
Acoustique — Méthodes d’essai pour la qualification de
l'environnement acoustique —
Partie 2: Détermination de la correction d’environnement
Reference number
ISO 26101-2:2024(en) © ISO 2024

---------------------- Page: 1 ----------------------
ISO 26101-2:2024(en)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2024
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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO 26101-2:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Qualification procedures for the acoustic environment . 3
4.1 General .3
4.2 Absolute comparison test .3
4.3 Methods based on room absorption . .3
4.4 Inverse-square-law qualification of parallelepiped and cylindrical measurement
surfaces .3
4.5 Approximate method based on an estimation of the equivalent absorption area.3
5 Absolute comparison test . 4
5.1 General .4
5.2 Locations of reference sound source in test environment .5
5.3 Information to be recorded and reported .5
6 Determination of the environmental correction based on room absorption . 6
6.1 General .6
6.2 Reverberation method .6
6.3 Two-surface meth
...

Norme
internationale
ISO 26101-2
Première édition
Acoustique — Méthodes
2024-06
d’essai pour la qualification de
l'environnement acoustique —
Partie 2:
Détermination de la correction
d’environnement
Acoustics — Test methods for the qualification of the acoustic
environment —
Part 2: Determination of the environmental correction
Numéro de référence
ISO 26101-2:2024(fr) © ISO 2024

---------------------- Page: 1 ----------------------
ISO 26101-2:2024(fr)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2024
Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, aucune partie de cette
publication ne peut être reproduite ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique,
y compris la photocopie, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut
être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Genève
Tél.: +41 22 749 01 11
E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse

© ISO 2024 – Tous droits réservés
ii

---------------------- Page: 2 ----------------------
ISO 26101-2:2024(fr)
Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Procédures de qualification de l’environnement acoustique . 3
4.1 Généralités .3
4.2 Essai par comparaison absolue . .3
4.3 Méthodes basées sur l’absorption de la salle.3
4.4 Qualification par la loi de l’inverse du carré de la distance des surfaces de mesure
parallélépipédiques et cylindriques .3
4.5 Méthode approchée basée sur une estimation de l’aire d’absorption équivalente .3
5 Essai par comparaison absolue . 5
5.1 Généralités .5
5.2 Emplacements de la source sonore de référence dans l’environnement d’essai .5
5.3 Informations à enregistrer et à consigner .6
6 Détermination de la correction d’environnement à partir de l’absorption de la salle . 6
6.1 Généralités .6
6.2 Méthode de la durée de réverbération .6
6.3 Méthode des deux surfaces .
...

FINAL DRAFT
International
Standard
ISO/FDIS 26101-2
ISO/TC 43/SC 1
Acoustics — Test methods for
Secretariat: DIN
the qualification of the acoustic
Voting begins on:
environment —
2024-03-06
Part 2:
Voting terminates on:
2024-05-01
Determination of the environmental
correction
Acoustique — Méthodes d’essai pour la qualification de
l'environnement acoustique —
Partie 2: Détermination de la correction d’environnement
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
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING 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.
Reference number
ISO/FDIS 26101-2:2024(en) © ISO 2024

---------------------- Page: 1 ----------------------
FINAL DRAFT
ISO/FDIS 26101-2:2024(en)
International
Standard
ISO/FDIS 26101-2
ISO/TC 43/SC 1
Acoustics — Test methods for
Secretariat: DIN
the qualification of the acoustic
Voting begins on:
environment —
Part 2:
Voting terminates on:
Determination of the environmental
correction
Acoustique — Méthodes d’essai pour la qualification de
l'environnement acoustique —
Partie 2: Détermination de la correction d’environnement
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
COPYRIGHT PROTECTED DOCUMENT
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2024
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/CEN PARALLEL PROCESSING
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 26101-2:2024(en) © ISO 2024

© ISO 2024 – All rights reserved
ii

---------------------- Page: 2 ----------------------
ISO/FDIS 26101-2:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Qualification procedures for the acoustic environment . 3
4.1 General .3
4.2 Absolute comparison test .3
4.3 Methods based on room absorption . .3
4.4 Inverse-square-law qualification of parallelepiped and cylindrical measurement
surfaces .
...

Formatted
...
Formatted
...

Style Definition
...
Style Definition
...
Style Definition
...
ISO/FDIS 26101-2:2024(en)
Style Definition
...
ISO/TC 43/SC 1
Style Definition
...
Style Definition
...
Secretariat: DIN
Style Definition
...
Date: 2024-01-29xx
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Acoustics – — Test methods for the qualification of the acoustic
Style Definition
...
environment – —
Style Definition
...
Style Definition
...
Style Definition
...
Part 2:
Style Definition
...
Determination of the environmental correction
Style Definition
...
Style Definition
...
Acoustique — Méthodes d’essai pour la qualification de l'environnement acoustique —
Style Definition
...
Partie 2: Détermination de la correction d’environnement
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
FDIS stage
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
Style Definition
...
St l D fi iti

---------------------- Page: 1 ----------------------
ISO/FDIS 26101-2:2024(en)
Formatted: Font: Bold
Formatted: HeaderCentered, Left
Formatted: Left: 1.5 cm, Right: 1.5 cm, Header
© ISO 2024
distance from edge: 1.27 cm, Footer distance from
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
Commented [eXtyles1]: The reference "ISO 2024" is to a
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
withdrawn standard
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
Formatted: Default Paragraph Font
at the address below or ISO’s member body in the country of the requester.
Formatted: Default Paragraph Font
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
Formatted: French (France)
Formatted: French (France)
Fax: +41 22 749 09 47
EmailE-mail: copyright@iso.org
Formatted: French (France)
Website: www.iso.orgwww.iso.org
Formatted: zzCopyright address, Adjust space between
Latin and Asian text, Adjust space between Asian text
Published in Switzerland
and numbers
Formatted: FooterPageRomanNumber, Left
© ISO 2024 – All rights reserved

ii

---------------------- Page: 2 ----------------------
ISO/FDIS 26101-2:2024(en)
Formatted: Font: 11 pt, Bold
Formatted: Font: Bold
Formatted: HeaderCentered, Left
Contents
Foreword . vi
Introduction . viii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Qualification procedures for the acoustic environment . 3
4.1 General . 3
4.2 Absolute comparison test . 3
4.3 Methods based on room absorption . 3
4.4 Inverse-square-law qualification of parallelepiped and cylindrical measurement surfaces . 3
4.5 Approximate method based on an estimation of the equivalent absorption area. 4
5 Absolute comparison test .
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

This May Also Interest You

ISO
ISO 9613-2:2024(Main)
Acoustics — Attenuation of sound during propagation outdoors — Part 2: Engineering method for the prediction of sound pressure levels outdoors

This document specifies an engineering 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-series) under meteorological conditions favourable to propagation from sources of known sound emission. These conditions are for downwind propagation or, equivalently, propagation under a well-developed moderate ground‑based temperature inversion, such as commonly occurs in clear, calm nights. Inversion conditions over extended water surfaces are not covered and may result in higher sound pressure levels than predicted from this document (see e.g. References [11] and [12]). The method also predicts a long-term average A‑weighted sound pressure level as specified in ISO 1996-1 and ISO 1996-2. The long-term average A‑weighted sound pressure level encompasses levels for a wide variety of meteorological conditions. Guidance has been provided to derive a meteorological correction based on the angular wind distribution relevant for the reference or long-term time interval as specified in ISO 1996-1:2016, 3.2.1 and 3.2.2. Examples for reference time intervals are day, night, or the hour of the night with the largest value of the sound pressure level. Long-term time intervals over which the sound of a series of reference time intervals is averaged or assessed representing a significant fraction of a year (e.g. 3 months, 6 months or 1 year). The method specified in this document consists specifically of octave band algorithms (with nominal mid-band frequencies from 63 Hz to 8 kHz) for calculating the attenuation of sound which originates from a point sound source, or an assembly of point sources. The source (or sources) may be moving or stationary. Specific terms are provided in the algorithms for the following physical effects: — geometrical divergence; — atmospheric absorption; — ground effect; — reflection from surfaces; — screening by obstacles. Additional information concerning propagation through foliage, industrial sites and housing is given in Annex A. The directivity of chimney-stacks to support the sound predictions for industrial sites has been included with Annex B. An example how the far-distance meteorological correction C0 can be determined from the local wind-climatology is given in Annex C. Experiences of the last decades how to predict the sound pressure levels caused by wind turbines is summarized in Annex D. The method is applicable in practice to a great variety of noise sources and environments. It is applicable, directly, or indirectly, to most situations concerning road or rail traffic, industrial noise sources, construction activities, and many other ground-based noise sources. It does not apply to sound from aircraft in flight, or to blast waves from mining, military, or similar operations. To apply the method of this document, several parameters need to be known with respect to the geometry of the source and of the environment, the ground surface characteristics, and the source strength in terms of octave band sound power levels for directions relevant to the propagation. If only A‑weighted sound power levels of the sources are known, the attenuation terms for 500 Hz may be used to estimate the resulting attenuation. The accuracy of the method and the limitations to its use in practice are described in Clause 9.

  • Standard
    46 pages
    English language
    sale 15% off
ISO
ISO/TS 20065:2022(Main)
Acoustics — Objective method for assessing the audibility of tones in noise — Engineering method

This document describes a method for the objective determination of the audibility of tones in environmental noise. This document is intended to augment the usual method for evaluation on the basis of aural impression, in particular, in cases in which there is no agreement on the degree of the audibility of tones. The method described can be used if the frequency of the tone being evaluated is equal to, or greater than, 50 Hz. In other cases, if the tone frequency is below 50 Hz, or if other types of noise (such as screeching) are captured, then this method cannot replace subjective evaluation. NOTE The procedure has not been validated below 50 Hz. The method presented herein can be used in continuous measurement stations that work automatically.

  • Technical specification
    33 pages
    English language
    sale 15% off
ISO
ISO/PAS 1996-3:2022(Main)
Acoustics — Description, measurement and assessment of environmental noise — Part 3: Objective method for the measurement of prominence of impulsive sounds and for adjustment of L Aeq

This method objectively categorises sources by determination of the prominence of impulsive sound, with the aim of correlating to community response. This method for measuring the prominence of impulsive sounds is intended for sources not identified as gunfire or high-energy impulsive sound. It typically produces adjustments in the range 0,0 dB to 9,0 dB. These adjustments are intended to be used to categorise the sources as either regular impulsive or highly impulsive sound sources and apply the penalty indicated in ISO 1996-1. However, the adjustments may be applied directly, as is done in NT ACOU 112[2], and BS 4142[3]. ISO 1996-2 provides additional guidance for performing these measurements. The method is intended for use on sources with impulsive characteristics that are not already categorised in ISO 1996-1. A non-exhaustive list of examples includes compressed air release, scrap handling, goods delivery, fork lifts with rattling forks, skateboard ramps, industrial shearing, gas discharges, percussive tools in demolition, powered riveting, etc. The method is not intended for use on sounds from firearms. Although the measurements of prominence may give relevant results, research has shown the response to these sources is influenced by factors outside of the scope of this document. In addition, the method is not intended to use for high-energy impulsive sound sources as specified in ISO 1996-1. NOTE This method is not intended for occupational hearing loss, which is outside the scope of this document. See Annex A for recommended additional research.

  • Technical specification
    10 pages
    English language
    sale 15% off
ISO
ISO 26101-1:2021(Main)
Acoustics — Test methods for the qualification of the acoustic environment — Part 1: Qualification of free-field environments

This document specifies methodology for qualifying acoustic spaces as anechoic and hemi-anechoic spaces meeting the requirements of a free sound field. This document specifies discrete-frequency and broad-band test methods for quantifying the performance of anechoic and hemi-anechoic spaces, defines the qualification procedure for an omni-directional sound source suitable for free-field qualification, gives details of how to present the results and describes uncertainties of measurement. This document has been developed for qualifying anechoic and hemi-anechoic spaces for a variety of acoustical measurement purposes. It is expected that, over time, various standards and test codes will refer to this document in order to qualify an anechoic or hemi-anechoic space for a particular measurement. Annex D provides guidelines for the specification of test parameters and qualification criteria for referencing documents. In the absence of specific requirements or criteria, Annex A provides qualification criteria and measurement requirements to qualify anechoic and hemi-anechoic spaces for general purpose acoustical measurements. This document describes the divergence loss method for measuring the free sound field performance of an acoustic environment.

  • Standard
    22 pages
    English language
    sale 15% off
  • Standard
    23 pages
    French language
    sale 15% off
ISO
ISO 6926:2016/Amd 1:2020(Amendment)
Acoustics — Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels — Amendment 1
  • Standard
    1 page
    English language
    sale 15% off
  • Standard
    1 page
    French language
    sale 15% off
ISO
ISO/TR 17534-4:2020(Main)
Acoustics — Software for the calculation of sound outdoors — Part 4: Recommendations for a quality assured implementation of the COMMISSION DIRECTIVE (EU) 2015/996 in software according to ISO 17534-1

This document facilitates a standardized interpretation and a verifiably consistent software implementation of the sound propagation part of the calculation method CNOSSOS-EU:2015 according to ISO 17534-1. Other parts of CNOSSOS-EU:2015, such as the source models or the calculation method for aircraft noise, are beyond the scope of this document. This document provides an agreed interpretation of ambiguous aspects of the sound propagation part of CNOSSOS-EU:2015, a set of illustrative test cases along with reference solutions, and an example of a template form for the declaration of conformity for software manufacturers.

  • Technical report
    124 pages
    English language
    sale 15% off
ISO
ISO/TS 12913-3:2019(Main)
Acoustics — Soundscape — Part 3: Data analysis

This document provides requirements and supporting information on analysis of data collected in-situ through methods as specified in ISO/TS 12913-2.

  • Technical specification
    22 pages
    English language
    sale 15% off
ISO
ISO 3740:2019(Main)
Acoustics — Determination of sound power levels of noise sources — Guidelines for the use of basic standards

ISO 3740:2019 gives guidance for the use of a set of twelve basic International Standards (see Tables 1, 2 and 3) describing various methods for determining sound power levels from all types of machinery, equipment and products. It provides guidance on the selection of one or more of these standards, appropriate to any particular type of sound source, measurement environment and desired accuracy. The guidance given applies to airborne sound. It is for use in the preparation of noise test codes (see ISO 12001) and also in noise emission testing where no specific noise test code exists. Such standardized noise test codes can recommend the application of particular basic International Standard(s) and give detailed requirements on mounting and operating conditions for a particular family to which the machine under test belongs, in accordance with general principles given in the basic standards. ISO 3740:2019 is not intended to replace any of the details of, or add any additional requirements to, the individual test methods in the basic International Standards referenced. NOTE 1 Two quantities which complement each other can be used to describe the noise emission of machinery, equipment and products. One is the emission sound pressure level at a specified position and the other is the sound power level. The International Standards which describe the basic methods for determining emission sound pressure levels at work stations and at other specified positions are ISO 11200 to ISO 11205 (References [20] to [25]). NOTE 2 The sound energy level mentioned in ISO 3741 to ISO 3747 is not addressed in this document as it is not mentioned in any legal requirement. Its application is limited to very special cases of a single burst of sound energy or transient sound defined in ISO 12001.

  • Standard
    35 pages
    English language
    sale 15% off
  • Standard
    35 pages
    French language
    sale 15% off
ISO
ISO/TS 12913-2:2018(Main)
Acoustics — Soundscape — Part 2: Data collection and reporting requirements

This document specifies requirements and supporting information on data collection and reporting for soundscape studies, investigations and applications. This document identifies and harmonizes the collection of data by which relevant information on the key components people, acoustic environment and context is obtained, measured and reported.

  • Technical specification
    32 pages
    English language
    sale 15% off
ISO
ISO 3743-2:2018(Main)
Acoustics — Determination of sound power levels of noise sources using sound pressure — Engineering methods for small, movable sources in reverberant fields — Part 2: Methods for special reverberation test rooms

ISO 3743-2:2018 specifies a relatively simple engineering method for determining the sound power levels of small, movable noise sources. The methods specified in this document are suitable for measurements of all types of noise within a specified frequency range, except impulsive noise consisting of isolated bursts of sound energy which are covered by ISO 3744 and ISO 3745. NOTE A classification of different types of noise is given in ISO 12001.

  • Standard
    38 pages
    English language
    sale 15% off
  • Standard
    42 pages
    French language
    sale 15% off