EN ISO 26101-1:2022
(Main)Acoustics - Test methods for the qualification of the acoustic environment - Part 1: Qualification of free-field environments (ISO 26101-1:2021)
Acoustics - Test methods for the qualification of the acoustic environment - Part 1: Qualification of free-field environments (ISO 26101-1:2021)
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.
Akustik - Prüfverfahren zur Qualifizierung der akustischen Umgebung - Teil 1: Qualifizierung von Freifeldumgebungen (ISO 26101 1:2021)
Dieses Dokument legt eine Methodologie zur Qualifizierung akustischer Räume als reflexionsarme Räume und reflexionsarme Halbräume, welche die Anforderungen eines freien Schallfeldes erfüllen, fest.
Dieses Dokument legt tonale und breitbandige Prüfverfahren zur Quantifizierung der Eigenschaften reflexionsarmer Räume und reflexionsarmer Halbräume fest, definiert das Qualifizierungsverfahren für eine omnidirektionale Schallquelle für die Freifeldqualifizierung, enthält Einzelheiten zur Angabe der Ergebnisse und beschreibt Messunsicherheiten.
Dieses Dokument wurde für die Qualifizierung reflexionsarmer Räume und reflexionsarmer Halbräume für eine Vielzahl akustischer Messzwecke entwickelt. Es wird erwartet, dass mit der Zeit verschiedene Normen und Prüfvorschriften Bezug auf dieses Dokument nehmen werden, um einen reflexionsarmen Raum oder reflexionsarmen Halbraum für eine bestimmte Messung zu qualifizieren. Anhang D enthält Leitlinien für die Festlegung von Prüfparametern und Qualifizierungskriterien für bezugnehmende Dokumente.
Bei Abwesenheit spezifischer Anforderungen oder Kriterien enthält Anhang A Qualifizierungskriterien und Messanforderungen zur Qualifizierung reflexionsarmer Räume und reflexionsarmer Halbräume für akustische Messungen zu allgemeinen Zwecken.
Dieses Dokument beschreibt das Divergenzdämpfungsverfahren zur Messung der Eigenschaften eines freien Schallfeldes einer akustischen Umgebung.
Acoustique - Méthodes d'essai pour la qualification de l'environnement acoustique - Partie 1: Qualification des environnements en champ libre (ISO 26101-1:2021)
Le présent document spécifie une méthodologie pour qualifier des espaces acoustiques comme des espaces anéchoïques ou semi-anéchoïques répondant aux exigences d’un champ acoustique libre.
Le présent document spécifie des méthodes d’essai en fréquences discrètes et en large bande pour quantifier la performance d’espaces anéchoïques et semi-anéchoïques. Il définit la procédure de qualification d’une source sonore omnidirectionnelle adéquate pour la qualification d’un champ libre, détaille le mode de présentation des résultats et décrit les incertitudes de mesure.
Le présent document a été conçu pour qualifier des espaces anéchoïques ou semi-anéchoïques pour une grande variété d’applications de métrologie acoustique. À terme, divers codes d’essai et normes devraient se référer au présent document pour qualifier un espace en tant qu’anéchoïque ou semi-anéchoïque en vue d’un mesurage spécifique. L’Annexe D énonce des lignes directrices pour la spécification de paramètres d’essai et de critères de qualification par les documents de référence.
En l’absence d’exigences ou de critères particuliers, l’Annexe A fournit les critères de qualification et les exigences de mesurage pour qualifier des espaces anéchoïques et semi-anéchoïques à des fins de mesurages acoustiques généraux.
Le présent document décrit la méthode de mesure de la performance d’un environnement acoustique en tant que champ acoustique libre, basée sur la perte par divergence.
Akustika - Preskusne metode za kvalifikacijo akustičnega okolja - 1. del: Kvalifikacija okolij prostega polja (ISO 26101-1:2021)
Ta dokument določa metodologijo za kvalifikacijo akustičnih prostorov kot gluhih in polgluhih prostorov, ki izpolnjujejo zahteve za prosto zvočno polje.
Ta dokument določa preskusne metode z diskretno frekvenco in širokopasovnim območjem za kvantitativno določanje lastnosti gluhih in polgluhih prostorov, opredeljuje postopek kvalifikacije za neusmerjen zvočni vir, ki je primeren za kvalifikacijo prostega polja, podaja podrobnosti o načinu predstavitve rezultatov ter opisuje merilne negotovosti.
Ta dokument je bil razvit za kvalificiranje gluhih in polgluhih prostorov za različne namene akustičnih meritev. Pričakuje se, da se bodo z namenom kvalificiranja gluhega ali polgluhega prostora pri določeni meritvi sčasoma na ta dokument sklicevali različni standardi in oznake preskusa. Dodatek D vsebuje smernice za določanje preskusnih parametrov in kvalifikacijska merila za sklicevanje na dokumente.
Če ni opredeljenih posebnih zahtev ali meril, so v dodatku A navedena kvalifikacijska merila in zahteve za meritve za kvalificiranje gluhih in polgluhih prostorov za splošno uporabne akustične meritve.
Ta dokument opisuje metodo divergenčne izgube za merjenje lastnosti prostega zvočnega polja v akustičnem okolju.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-julij-2022
Akustika - Preskusne metode za kvalifikacijo akustičnega okolja - 1. del:
Kvalifikacija okolij prostega polja (ISO 26101-1:2021)
Acoustics - Test methods for the qualification of the acoustic environment - Part 1:
Qualification of free-field environments (ISO 26101-1:2021)
Akustik - Verfahren für die Qualifizierung von Freifeld-Prüfumgebungen - Teil 1:
Qualifizierung von Freifeldumgebungen (ISO 26101-1:2021)
Acoustique - Méthodes d'essai pour la qualification de l'environnement acoustique -
Partie 1: Qualification des environnements en champ libre (ISO 26101-1:2021)
Ta slovenski standard je istoveten z: EN ISO 26101-1:2022
ICS:
17.140.01 Akustična merjenja in Acoustic measurements and
blaženje hrupa na splošno noise abatement in general
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 26101-1
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2022
EUROPÄISCHE NORM
ICS 17.140.01
English Version
Acoustics - Test methods for the qualification of the
acoustic environment - Part 1: Qualification of free-field
environments (ISO 26101-1:2021)
Acoustique - Méthodes d'essai pour la qualification de Akustik - Verfahren für die Qualifizierung von Freifeld-
l'environnement acoustique - Partie 1: Qualification Prüfumgebungen - Teil 1: Qualifizierung von
des environnements en champ libre (ISO 26101- Freifeldumgebungen (ISO 26101-1:2021)
1:2021)
This European Standard was approved by CEN on 13 April 2022.
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, Turkey 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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 26101-1:2022 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
The text of ISO 26101-1:2021 has been prepared by Technical Committee ISO/TC 43 "Acoustics” of the
International Organization for Standardization (ISO) and has been taken over as EN ISO 26101-1:2022
by 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 November 2022, and conflicting national standards
shall be withdrawn at the latest by November 2022.
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.
Any feedback and questions on this document should be directed to the users’ national standards body.
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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 26101-1:2021 has been approved by CEN as EN ISO 26101-1:2022 without any
modification.
INTERNATIONAL ISO
STANDARD 26101-1
First edition
2021-05
Acoustics — Test methods for
the qualification of the acoustic
environment —
Part 1:
Qualification of free-field
environments
Acoustique — Méthodes d'essai pour la qualification de
l'environnement acoustique —
Partie 1: Qualification des environnements en champ libre
Reference number
ISO 26101-1:2021(E)
©
ISO 2021
ISO 26101-1:2021(E)
© ISO 2021
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
ii © ISO 2021 – All rights reserved
ISO 26101-1:2021(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Allowable deviations from inverse square law . 2
5 Measurement of free sound field performance . 3
5.1 Divergence loss method . 3
5.1.1 Principle . 3
5.1.2 Instrumentation and measuring equipment . 3
5.1.3 Location of test sound sources and microphone traverses . 4
5.1.4 Test procedure . 5
5.1.5 Expression of results . 6
5.1.6 Measurement uncertainty . 7
5.2 Information to be recorded . 7
5.3 Information to be reported . 8
Annex A (normative) Qualification criteria and measurement requirements .9
Annex B (normative) General procedure for evaluation of test sound source directionality .12
Annex C (informative) Measurement uncertainty .15
Annex D (informative) Guidelines for referring to this test method .18
Bibliography .20
ISO 26101-1:2021(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.
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 documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/ patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 43, Acoustics, Subcommittee SC 1, Noise.
This first edition of ISO 26101-1 cancels and replaces the second edition of ISO 26101:2017, of which it
constitutes a minor revision. The changes compared to the previous edition are as follows:
— The title of the document was changed from “Acoustics — Test methods for the qualification of free-
field environments” to “Acoustics — Test methods for the qualification of the acoustic environment —
Part 1: Qualification of free-field environments”, so that an additional part, "ISO 26101-2, Acoustics
— Test methods for the qualification of the acoustic environment —Part 2: Determination of the
environmental correction", can be introduced.
A list of all parts in the ISO 26101 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
iv © ISO 2021 – All rights reserved
ISO 26101-1:2021(E)
Introduction
This document describes the divergence loss method of measurement of performance of an environment
designed to provide a free sound field or free sound field over a reflecting plane. An acoustical
environment is a free sound field if it has bounding surfaces that absorb all sound energies incident
upon them. This is normally achieved using specialized test environments, such as anechoic or hemi-
anechoic chambers. In practice, these provide a controlled free sound field for acoustical measurements
in a confined space within the facility.
The purpose of this document is to promote uniformity in the method and conditions of measurement
when qualifying free sound field environments.
It is expected that the qualification procedures outlined in this document will be referred to by other
International Standards and industry test codes. In such cases, these documents making reference
to this document may specify qualification criteria appropriate for the test method and may require
specific traverse paths.
INTERNATIONAL STANDARD ISO 26101-1:2021(E)
Acoustics — Test methods for the qualification of the
acoustic environment —
Part 1:
Q
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.