SIST EN ISO 389-6:2007

SLOVENSKI STANDARD
SIST EN ISO 389-6:2007
01-oktober-2007
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Acoustics - Reference zero for the calibration of audiometric equipment - Part 6:
Reference threshold of hearing for test signals of short duration (ISO 389-6:2007)
Akustik - Bezugsschwellen zur Kalibrierung von Audiometern - Teil 6: Äquivalente
Bezugsschwellen-Schalldruckpegel für akustische Kurzzeit-Testsignale (ISO 389-
6:2007)
Acoustique - Zéro de référence pour l'étalonnage d'équipements audiométriques - Partie
6: Niveaux liminaires d'audition de référence pour signaux d'essai de courte durée (ISO
389-6:2007)
Ta slovenski standard je istoveten z: EN ISO 389-6:2007
ICS:
13.140 Vpliv hrupa na ljudi Noise with respect to human
beings
SIST EN ISO 389-6:2007 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN ISO 389-6
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2007
ICS 13.140

English Version
Acoustics - Reference zero for the calibration of audiometric
equipment - Part 6: Reference threshold of hearing for test
signals of short duration (ISO 389-6:2007)
Acoustique - Zéro de référence pour l'étalonnage Akustik - Bezugsschwellen zur Kalibrierung von
d'équipements audiométriques - Partie 6: Niveaux Audiometern - Teil 6: Äquivalente Bezugsschwellen-
liminaires d'audition de référence pour signaux d'essai de Schalldruckpegel für akustische Kurzzeit-Testsignale (ISO
courte durée (ISO 389-6:2007) 389-6:2007)
This European Standard was approved by CEN on 30 June 2007.
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 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 Management Centre has the same status as the
official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, 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
© 2007 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 389-6:2007: E
worldwide for CEN national Members.

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EN ISO 389-6:2007 (E)
Contents Page
Foreword.3

2

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EN ISO 389-6:2007 (E)
Foreword
This document (EN ISO 389-6:2007) 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 January 2008, and conflicting national standards shall be withdrawn at
the latest by January 2008.
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, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.
Endorsement notice
The text of ISO 389-6:2007 has been approved by CEN as a EN ISO 389-6:2007 without any modification.

3

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INTERNATIONAL ISO
STANDARD 389-6
First edition
2007-07-01

Acoustics — Reference zero for the
calibration of audiometric equipment —
Part 6:
Reference threshold of hearing for test
signals of short duration
Acoustique — Zéro de référence pour l'étalonnage d'équipements
audiométriques —
Partie 6: Niveaux liminaires d'audition de référence pour signaux d'essai
de courte durée




Reference number
ISO 389-6:2007(E)
©
ISO 2007

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ISO 389-6:2007(E)
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ii © ISO 2007 – All rights reserved

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ISO 389-6:2007(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 389-6 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 threshold of hearing for 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: Preferred test conditions for the determination of reference hearing threshold levels
© ISO 2007 – All rights reserved iii

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ISO 389-6:2007(E)
Introduction
IEC 60645-3 specifies audiometric test signals of short duration. These short-duration signals consist of clicks
and tone-bursts, and they are used in different diagnostic tests, e.g. in Evoked Response Audiometry such as
auditory electrophysiology (electrocochleography, auditory brainstem responses, etc.), and transient evoked
otoacoustic emissions. This part of ISO 389 specifies reference threshold values for the short-duration signals.
The reference hearing threshold data for specific transducers described herein will promote agreement and
uniformity in the expression of results of hearing threshold measurements.


iv © ISO 2007 – All rights reserved

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INTERNATIONAL STANDARD ISO 389-6:2007(E)

Acoustics — Reference zero for the calibration of audiometric
equipment —
Part 6:
Reference threshold of hearing for test signals of short duration
1 Scope
This part of ISO 389 specifies reference hearing threshold levels for tests signals of short duration applicable
to the calibration of audiometric equipment where such signals are used.
NOTE 1 Some notes on different parameters and their effects on threshold levels are given in Annex A.
NOTE 2 Preferred test conditions for determining hearing thresholds for standardization are specified in ISO 389-9.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 389-1, Acoustics — Reference zero for the calibration of audiometric equipment — Part 1: Reference
equivalent threshold sound pressure levels for pure tones and supra-aural earphones
IEC 60318-1, Electroacoustics — Simulators of human head and ear — Part 1: Ear simulator for the
calibration of supra-aural and circumaural earphones
IEC 60318-4, Electroacoustics — Simulators of human head and ear — Part 4: Occluded-ear simulator for the
1)
measurement of earphones coupled to the ear by inserts
IEC 60318-6, Electroacoustics — Simulators of human head and ear — Part 6: Mechanical coupler for the
2)
measurements on bone vibrators
IEC 61094-1, Measurement microphones — Part 1: Specifications for laboratory standard microphones
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 389-1 and the following apply.
3.1
short-duration signal
signal having a duration of less than 200 ms

1) Revision of IEC 60711:1981.
2) Revision of IEC 60373:1990.
© ISO 2007 – All rights reserved 1

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ISO 389-6:2007(E)
3.2
click
transient acoustic or vibratory signal whose frequency spectrum covers a broad frequency range, and which is
produced by applying a single rectangular pulse to a transducer
3.3
tone-burst
sinusoidal signal multiplied by a time window of less than 200 ms
3.4
condensation signal
short-duration signal, the initial pressure wave of which causes an over-pressure relative to ambient pressure,
or the initial force wave of which causes an over-force relative to the static force at the plane of the output port
of the transducer
3.5
rarefaction signal
short-duration signal, the initial pressure wave of which causes an under-pressure relative to ambient
pressure, or the initial force wave of which causes an under-force relative to the static force at the plane of the
output port of the transducer
3.6
alternating polarity signal
series of short-duration signals, alternating between rarefaction and condensation signals
3.7
reference pulse
electric rectangular pulse (single monophasic rectangular wave) of (100 ± 10) µs duration with rise and fall
times less than 25 µs as speci
...