SIST EN ISO 389-8:2004

SLOVENSKI STANDARD
SIST EN ISO 389-8:2004
01-september-2004
$NXVWLND±5HIHUHQFDQLþ]DXPHUMDQMHDYGLRPHWULþQHRSUHPH±GHO5HIHUHQþQL
HNYLYDOHQWQLSUDJUDYQL]YRþQHJDWODND]DþLVWHWRQHLQVOXãDONH,62
Acoustics - Reference zero for the calibration of audiometric equipment - Part 8:
Reference equivalent threshold sound pressure levels for pure tones and circumaural
earphones (ISO 389-8:2004)
Akustik - Standard-Bezugspegel für die Kalibrierung audiometrischer Geräte - Teil 8:
Äquivalente Bezugs-Schwellenschalldruckpegel für reine Töne und circumaurale
Kopfhörer (ISO 389-8:2004)
Acoustique - Zéro de référence pour l'étalonnage d'équipements audiométriques - Partie
8: Niveaux de référence équivalents de pression acoustique liminaire pour les écouteurs
a sons purs circumauraux (ISO 389-8:2004)
Ta slovenski standard je istoveten z: EN ISO 389-8:2004
ICS:
13.140 Vpliv hrupa na ljudi Noise with respect to human
beings
SIST EN ISO 389-8:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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

SIST EN ISO 389-8:2004

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

SIST EN ISO 389-8:2004
EUROPEAN STANDARD
EN ISO 389-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2004
ICS 13.140
English version
Acoustics - Reference zero for the calibration of audiometric
equipment - Part 8: Reference equivalent threshold sound
pressure levels for pure tones and circumaural earphones (ISO
389-8:2004)
Acoustique - Zéro de référence pour l'étalonnage Akustik - Bezugpegel für die Audiometrie - Teil 8: Bezugs-
d'équipements audiométriques - Partie 8: Niveaux de Schwellen-Schalldruckpegel für Reintöne und circumaurale
référence équivalents de pression acoustique liminaire pour Kopfhörer (ISO 389-8:2004)
les écouteurs à sons purs circumauraux (ISO 389-8:2004)
This European Standard was approved by CEN on 16 April 2004.
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, 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
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 389-8:2004: E
worldwide for CEN national Members.

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

SIST EN ISO 389-8:2004

EN ISO 389-8:2004 (E)





Foreword


This document (EN ISO 389-8:2004) 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 November 2004, and conflicting national
standards shall be withdrawn at the latest by November 2004.

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, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.


Endorsement notice

The text of ISO 389-8:2004 has been approved by CEN as EN ISO 389-8:2004 without any
modifications.

2

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

SIST EN ISO 389-8:2004


INTERNATIONAL ISO
STANDARD 389-8
First edition
2004-05-15


Acoustics — Reference zero for the
calibration of audiometric equipment —
Part 8:
Reference equivalent threshold sound
pressure levels for pure tones and
circumaural earphones
Acoustique — Zéro de référence pour l'étalonnage d'équipements
audiométriques —
Partie 8: Niveaux de référence équivalents de pression acoustique
liminaire pour les écouteurs à sons purs circumauraux




Reference number
ISO 389-8:2004(E)
©
ISO 2004

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

SIST EN ISO 389-8:2004
ISO 389-8:2004(E)
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.


©  ISO 2004
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland

ii © ISO 2004 – All rights reserved

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

SIST EN ISO 389-8:2004
ISO 389-8:2004(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 389-8 was prepared by Technical Committee ISO/TC 43, Acoustics.
ISO 389 consists of the following parts, under the general title Acoustics — Reference zero for the calibration
of audiometric equipment:
— Part 1: Reference equivalent threshold sound pressure levels for pure tones and supra-aural earphones
— Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
— Part 3: Reference equivalent threshold force levels for pure tones and bone vibrators
— Part 4: Reference levels for narrow-band masking noise
— Part 5: Reference equivalent threshold sound pressure levels for pure tones in the frequency range 8 kHz
to 16 kHz
— Part 6: Reference equivalent threshold sound pressure levels for acoustic test signals of short duration
— Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions
— Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
Part 9 on preferred test conditions for the standardization of reference equivalent threshold sound pressure
levels or vibratory force levels, is under preparation.
© ISO 2004 – All rights reserved iii

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

SIST EN ISO 389-8:2004
ISO 389-8:2004(E)
Introduction
This part of ISO 389 has been established in order to be able to use the same earphone for pure tone
audiometry in the frequency range 125 Hz to 16 000 Hz. It specifies reference values from 125 Hz to 8 000 Hz.
ISO/TR 389-5 specifies values from 8 000 Hz to 16 000 Hz.
The reference values are based on information provided by laboratories in different countries, representing the
most reliable data available at this time.
At present, reference values for only one type of circumaural earphone, SENNHEISER HDA 200, are
available. This earphone provides a good attenuation of background noise and its frequency response is
without pronounced resonances on a human ear as well as on an ear simulator.

iv © ISO 2004 – All rights reserved

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

SIST EN ISO 389-8:2004
INTERNATIONAL STANDARD ISO 389-8:2004(E)

Acoustics — Reference zero for the calibration of audiometric
equipment —
Part 8:
Reference equivalent threshold sound pressure levels for pure
tones a
...