SIST EN ISO 389-1:2018

SLOVENSKI STANDARD
SIST EN ISO 389-1:2018
01-april-2018
1DGRPHãþD
SIST EN ISO 389-1:2001
$NXVWLND5HIHUHQþQDQLþOD]DXPHUMDQMHDYGLRPHWURYGHO5HIHUHQþQL
HNYLYDOHQWQLSUDJUDYQL]YRþQHJDWODND]DþLVWHWRQHLQGHOQHVXSUDDXUDOQH
QDXãQLNH,62
Acoustics - Reference zero for the calibration of audiometric equipment - Part 1:
Reference equivalent threshold sound pressure levels for pure tones and supra-aural
earphones (ISO 389-1:2017)
Akustik - Standard-Bezugspegel für die Kalibrierung audiometrischer Geräte - Teil 1:
Äquivalente Bezugs-Schwellenschalldruckpegel für reine Töne und supra-aurale
Kopfhörer (ISO 389-1:2017)
Acoustique - Zéro de référence pour l'étalonnage d'équipements audiométriques - Partie
1: Niveaux de référence équivalents de pression acoustique liminaire pour les écouteurs
à sons purs supra-auraux (ISO 389-1:2017)
Ta slovenski standard je istoveten z: EN ISO 389-1:2018
ICS:
13.140 Vpliv hrupa na ljudi Noise with respect to human
beings
17.140.01 $NXVWLþQDPHUMHQMDLQ Acoustic measurements and
EODåHQMHKUXSDQDVSORãQR noise abatement in general
SIST EN ISO 389-1:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------

SIST EN ISO 389-1:2018

---------------------- Page: 2 ----------------------

SIST EN ISO 389-1:2018


EN ISO 389-1
EUROPEAN STANDARD

NORME EUROPÉENNE

February 2018
EUROPÄISCHE NORM
ICS 13.140 Supersedes EN ISO 389-1:2000
English Version

Acoustics - Reference zero for the calibration of
audiometric equipment - Part 1: Reference equivalent
threshold sound pressure levels for pure tones and supra-
aural earphones (ISO 389-1:2017)
Acoustique - Zéro de référence pour l'étalonnage Akustik - Standard-Bezugspegel für die Kalibrierung
d'équipements audiométriques - Partie 1: Niveaux de audiometrischer Geräte - Teil 1: Äquivalente Bezugs-
référence équivalents de pression acoustique liminaire Schwellenschalldruckpegel für reine Töne und supra-
pour les écouteurs à sons purs supra-auraux (ISO 389- aurale Kopfhörer (ISO 389-1:2017)
1:2017)
This European Standard was approved by CEN on 16 December 2017.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 389-1:2018 E
worldwide for CEN national Members.

---------------------- Page: 3 ----------------------

SIST EN ISO 389-1:2018
EN ISO 389-1:2018 (E)
Contents Page
European foreword . 3
2

---------------------- Page: 4 ----------------------

SIST EN ISO 389-1:2018
EN ISO 389-1:2018 (E)
European foreword
This document (EN ISO 389-1:2018) 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 August 2018, and conflicting national standards shall
be withdrawn at the latest by August 2018.
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 389-1:2000.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 389-1:2017 has been approved by CEN as EN ISO 389-1:2018 without any modification.


3

---------------------- Page: 5 ----------------------

SIST EN ISO 389-1:2018

---------------------- Page: 6 ----------------------

SIST EN ISO 389-1:2018
INTERNATIONAL ISO
STANDARD 389-1
Second edition
2017-12
Acoustics — Reference zero for
the calibration of audiometric
equipment —
Part 1:
Reference equivalent threshold sound
pressure levels for pure tones and
supra-aural earphones
Acoustique — Zéro de référence pour l'étalonnage d'équipements
audiométriques —
Partie 1: Niveaux de référence équivalents de pression acoustique
liminaire pour les écouteurs à sons purs supra-auraux
Reference number
ISO 389-1:2017(E)
©
ISO 2017

---------------------- Page: 7 ----------------------

SIST EN ISO 389-1:2018
ISO 389-1:2017(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2017 – All rights reserved

---------------------- Page: 8 ----------------------

SIST EN ISO 389-1:2018
ISO 389-1:2017(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Specifications . 2
4.1 General . 2
4.2 Generic supra-aural earphones in conjunction with an IEC 60318-1 ear simulator . 3
4.3 Model-specific earphones in conjunction with an IEC 60318-1 ear simulator . 4
4.4 Model-specific earphones in conjunction with an IEC 60318-3 acoustic coupler . 5
Annex A (informative) Application of the RETSPLs . 7
Annex B (informative) Notes on the derivation of the RETSPLs . 8
Bibliography .10
© ISO 2017 – All rights reserved iii

---------------------- Page: 9 ----------------------

SIST EN ISO 389-1:2018
ISO 389-1:2017(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 on 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 the following
URL: www.iso.org/iso/foreword.html.
The committee responsible for this document is ISO/TC 43, Acoustics.
This second edition cancels and replaces the first edition (ISO 389-1:1998), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— data for additional models of earphone have been introduced;
— wording and definitions have been aligned with the current versions of standards in the field of
audiology.
A current list of all parts in the ISO 389 series can be found on the ISO website.
iv © ISO 2017 – All rights reserved

---------------------- Page: 10 ----------------------

SIST EN ISO 389-1:2018
ISO 389-1:2017(E)

Introduction
Each document in the ISO 389 series specifies reference threshold levels for the calibration of
audiometric equipment. This document is applicable to equipment for pure-tone air-conduction
audiometry that uses supra-aural earphones.
In principle, reference equivalent threshold sound pressure levels (RETSPLs) would be rendered
independent of earphone model if they were referred to an ear simulator having acoustical properties
exactly simulating those of the average human ear. A device designed with this aim in view is
standardized in IEC 60318-1. The original data for the ISO 389 series were presented in ISO 389:1985,
Addendum 1, which was prepared based on an assessment of technical data provided by laboratories
listed in Annex B on RETSPL values specified on the IEC 60318-1 ear simulator and covering a variety
of earphone models. These data were analysed to produce a set of RETSPL values which are, within an
acceptable uncertainty, applicable to earphones of any model within a broadly defined class. A note on
the derivation of the standard values and the origin of the data input is given in Annex B for information.
In recent years, new supra-aural earphone models have been developed and other models have been
revised. If applicable, their RETSPLs were specified both on the IEC 60318-1 ear simulator and the
IEC 60318-3 acoustic coupler, as a result of direct threshold measurements under the preferred test
conditions given in ISO 389-9. These model-specific RETSPL values are given in this document in
1)
separate tables, along with the IEC 60318-3 acoustic coupler RETSPLs for Telephonics TDH 39 and
2)
Beyer DT 48 earphones, which were adopted from the former editions of ISO 389.
1) TDH 39 is the name of a product supplied by Telephonics. This information is given for the convenience of users
of this document and does not constitute an endorsement by ISO of the product name.
2) DT 48 is the name of a product supplied by Beyerdynamic. This information is given for the convenience of users
of this document and does not constitute an endorsement by ISO of the product named.
© ISO 2017 – All rights reserved v

---------------------- Page: 11 ----------------------

SIST EN ISO 389-1:2018

---------------------- Page: 12 ----------------------

SIST EN ISO 389-1:2018
INTERNATIONAL STANDARD ISO 389-1:2017(E)
Acoustics — Reference zero for the calibration of
audiometric equipment —
Part 1:
Reference equivalent threshold sound pressure levels for
pure tones and supra-aural earphones
1 Scope
This document specifies a standard reference zero for the scale of hearing threshold level applicable
to pure-tone air conduction audiometers, to promote agreement and uniformity in the expression of
hearing threshold level measurements throughout the world.
It states the information in a form suitable for direct application to the calibration of audiometers, that
is, in terms of the reference equivalent threshold sound pressure levels of generic supra-aural earphones
specified in 4.2, measured on an ear simulator complying with IEC 60318-1 and in terms of model-
specific data given in two additional tables for the IEC 60318-3 acoustic coupler and the IEC 60318-1
ear simulator, respectively.
The data are based on an assessment of the information available from the various standardizing
laboratories responsible for audiometric standards and from scientific publications.
Some notes on the application and derivation of the reference levels are given in Annexes A and B.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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.
IEC 60318-1:2009, Electroacoustics — Simulators of human head and ear — Part 1: Ear simulator for the
measurement of supra-aural and circumaural earphones
IEC 60318-3, Electroacoustics — Simulators of human head and ear — Part 3: Acoustic coupler for the
calibration of supra-aural earphones used in audiometry
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
air conduction
transmission of sound through the external and middle ear to the inner ear
© ISO 2017 – All rights reserved 1

---------------------- Page: 13 ----------------------

SIST EN ISO 389-1:2018
ISO 389-1:2017(E)

3.2
acoustic coupler
device for measuring the acoustic output of sound sources where the sound pressure is measured by
a calibrated microphone coupled to the source by a cavity of predetermined shape and volume which
does not necessarily approximate the acoustic impedance of the normal human ear
Note 1 to entry: An acoustic coupler is specified in IEC 60318-3.
3.3
ear sim
...