SIST EN 60318-6:2008

Electroacoustics - Simulators of human head and ear -- Part 6: Mechanical coupler for the measurements on bone vibrators

This part of IEC 60318 describes a mechanical coupler for the measurement of the output force of bone vibrators. The mechanical impedance of the coupler is specified in the frequency range 125 Hz to 8 000 Hz. The coupler is intended for calibration of audiometers using bone vibrators having a plane circular tip area of 175 mm² ± 25 mm² and for determining the performance of bone conduction hearing aids. The vibratory force developed by a bone vibrator is not, in general, the same on the coupler as on a person's mastoid. However, the IEC recommends its use as a means for the calibration of specified vibrators used in audiometry and for the exchange of specifications and of data on bone conduction hearing aids.

Akustik - Simulatoren des menschlichen Kopfes und Ohres -- Teil 6: Mechanischer Kuppler für Messungen an Knochenleitungshörern

Electroacoustique - Simulateurs de tête et d'oreille humaines - Partie 6: Coupleur mécanique destiné aux mesures des ossivribrateurs

Décrit un coupleur mécanique destiné à la mesure de la force de sortie des ossivibrateurs. L'impédance mécanique du coupleur est spécifiée dans la gamme de fréquences comprise entre 125 Hz et 8 000 Hz. Le coupleur est destiné à l'étalonnage des audiomètres utilisant les ossivibrateurs dont l'extrémité présente une surface plane et circulaire de 175 mm2 ± 25 mm2 et à la détermination de la performance des appareils de correction auditive à conduction osseuse. La force vibratoire développée par un ossivibrateur n'est pas, en général, la même sur le coupleur que sur la mastoïde d'une personne. Cependant, la CEI recommande son utilisation comme moyen d'étalonnage des vibrateurs spécifiés, utilisés en audiométrie et pour l'échange des spécifications et des données sur les  appareils de correction auditive à conduction osseuse. La présente norme annule et remplace la CEI 60373 parue en 1990. Cette première édition constitue une révision technique.

Elektroakustika - Simulatorji človeških glave in ušesa - 6. del: Mehanska spojka za meritve na kostnih vibratorjih (IEC 60318-6:2007)

General Information

• Status: Published
• Publication Date: 11-Sep-2008
• ICS: 17.140.50 - Electroacoustics
• Technical Committee: I11 - Imaginarni 11
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Sep-2008
• Due Date: 08-Nov-2008
• Completion Date: 12-Sep-2008
• Ref Project: EN 60318-6:2008 - Electroacoustics - Simulators of human head and ear - Part 6: Mechanical coupler for the measurement of bone vibrators

Relations

• Replaces: SIST HD 590 S1:2004 - Mechanical coupler for measurements on bone vibrators
• Effective Date: 01-Oct-2008
• Revised: SIST HD 590 S1:2004 - Mechanical coupler for measurements on bone vibrators
• Effective Date: 07-Jun-2011
• Replaces: SIST HD 590 S1:2004 - Mechanical coupler for measurements on bone vibrators
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60318-6:2008
01-oktober-2008
1DGRPHãþD
SIST HD 590 S1:2004
(OHNWURDNXVWLND6LPXODWRUMLþORYHãNLKJODYHLQXãHVDGHO0HKDQVNDVSRMND]D
PHULWYHQDNRVWQLKYLEUDWRUMLK,(&
Electroacoustics - Simulators of human head and ear - Part 6: Mechanical coupler for the
measurements on bone vibrators (IEC 60318-6:2007)
Akustik - Simulatoren des menschlichen Kopfes und Ohres - Teil 6: Mechanischer
Kuppler für Messungen an Knochenleitungshörern (IEC 60318-6:2007)
Electroacoustique - Simulateurs de tête et d'oreille humaines - Partie 6: Coupleur
mécanique destiné à la mesure des ossivibrateurs (CEI 60318-6:2007)
Ta slovenski standard je istoveten z: EN 60318-6:2008
ICS:
17.140.50 Elektroakustika Electroacoustics
SIST EN 60318-6:2008 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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EUROPEAN STANDARD
EN 60318-6

NORME EUROPÉENNE
July 2008
EUROPÄISCHE NORM

ICS 17.140.50 Supersedes HD 590 S1:1991


English version


Electroacoustics -
Simulators of human head and ear -
Part 6: Mechanical coupler for the measurement of bone vibrators
(IEC 60318-6:2007)


Electroacoustique -  Akustik -
Simulateurs de tête et d'oreille humaines - Simulatoren des menschlichen
Partie 6: Coupleur mécanique Kopfes und Ohres -
destiné à la mesure des ossivibrateurs Teil 6: Mechanischer Kuppler
(CEI 60318-6:2007) für Messungen an Knochenleitungshörern
(IEC 60318-6:2007)




This European Standard was approved by CENELEC on 2008-06-01. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified
to the Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: rue de Stassart 35, B - 1050 Brussels


© 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60318-6:2008 E

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EN 60318-6:2008 - 2 -
Foreword
The text of document 29/615/CDV, future edition 1 of IEC 60318-6, prepared by IEC TC 29,
Electroacoustics, was submitted to the IEC-CENELEC parallel Unique Acceptance Procedure and was
approved by CENELEC as EN 60318-6 on 2008-06-01.
This European Standard supersedes HD 590 S1:1991.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2009-03-01
– latest date by which the national standards conflicting
(dow) 2011-06-01
with the EN have to be withdrawn
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60318-6:2007 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards indicated:
IEC 60118-9 NOTE  Harmonized as HD 450.9 S1:1987 (not modified).
IEC 60645-1 NOTE  Harmonized as EN 60645-1:2001 (not modified).
ISO 389-3 NOTE  Harmonized as EN ISO 389-3:1998 (not modified).
ISO 266 NOTE  Harmonized as EN ISO 266:1997 (not modified).
__________

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- 3 - EN 60318-6:2008
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

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.

NOTE  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.

Publication Year Title EN/HD Year

BIPM/IEC/ISO/ 1995 Guide to the expression of uncertainty in - -
IFCC/IUPAC/ measurement (GUM)
IUPAP/OIML

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IEC 60318-6
Edition 1.0 2007-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Electroacoustics – Simulators of human head and ear –
Part 6: Mechanical coupler for the measurement of bone vibrators

Electroacoustique – Simulateurs de tête et d'oreille humaines –
Partie 6: Coupleur mécanique destiné à la mesure des ossivibrateurs

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
P
CODE PRIX
ICS 17.140.50 ISBN 2-8318-9470-0

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– 2 – 60318-6 © IEC:2007
CONTENTS
FOREWORD.3

1 Scope.5
2 Normative reference .5
3 Terms and definitions .5
4 Construction .6
4.1 General .6
4.2 Mechanical impedance level.7
4.3 Phase angle of mechanical impedance.8
4.4 External geometry .8
5 Calibration.8
5.1 Reference environmental conditions.8
5.2 Calibration procedure .8
5.3 Force sensitivity level .8
5.4 Mechanical impedance level.9
5.5 Temperature dependence.9
6 Marking and instruction manual .9
6.1 Marking of the mechanical coupler .9
6.2 Instruction manual.9
7 Coupling of bone vibrator to the mechanical coupler.9
8 Maximum permitted expanded uncertainty of measurements .10

Annex A (informative) Example of a specific construction of a mechanical coupler.11
Annex B (informative) Guidance on the testing and calibration of mechanical couplers .14

Bibliography.15

Figure A.1 – Dimensions of mechanical impedance element base.12
Figure A.2 – Dimensions of tungsten loading insert.12
Figure A.3 – Assembly of the mechanical coupler .13

Table 1 – Mechanical impedance level.7
Table 2 – Values of U for basic measurements .10
max

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60318-6 © IEC:2007 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

ELECTROACOUSTICS –
SIMULATORS OF HUMAN HEAD AND EAR –

Part 6: Mechanical coupler for the measurement of bone vibrators


FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any
equipment declared to be in conformity with an IEC Publication.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60318-6 has been prepared by IEC technical committee 29:
Electroacoustics.
This standard cancels and replaces IEC 60373 published in 1990. This first edition constitutes
a technical revision.
The text of this standard is based on the following documents:
CDV Report on voting
29/615/CDV 29/628A/RVC

Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
A list of all parts of the IEC 60318 series under the general title: Electroacoustics – Simulators
of human head and ear, can be found on the IEC website.

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– 4 – 60318-6 © IEC:2007
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this publication will remain unchanged until
the maintenance result date indicated on the IEC web site under "http://webstore.iec.ch" in
the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

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60318-6 © IEC:2007 – 5 –
ELECTROACOUSTICS –
SIMULATORS OF HUMAN HEAD AND EAR –

Part 6: Mechanical coupler for the measurement of bone vibrators



1 Scope
This part of IEC 60318 describes a mechanical coupler for the measurement of the output
force of bone vibrators. The mechanical impedance of the coupler is specified in the
frequency range 125 Hz to 8 000 Hz. The coupler is intended for calibration of audiometers
using bone vibrators having a plane circular tip area of 175 mm² ± 25 mm² and for determining
the performance of bone conduction hearing aids.
The vibratory force developed by a bone vibrator is not, in general, the same on the coupler
as on a person’s mastoid. However, the IEC recommends its use as a means for the
calibration of specified vibrators used in audiometry and for the exchange of specifications
and of data on bone conduction hearing aids.
NOTE Some bone vibrators of hearing aids and some non-standardised bone vibrators still used in audiometry
have a curved surface. Users should be aware that those vibrators in general will not be loaded on the mechanical
coupler with the same mechanical impedance as the one specified in Table 1 of this standard.
2 Normative reference
The following referenced document is 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.
BIPM, IEC, ISO, IFCC, IUPAC, IUPAP and OIML:1995, Guide to the expression of uncertainty
in measurement (GUM)
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
bone-conduction vibrator
bone vibrator
electro-mechanical transducer that transforms electric oscillations into mechanical vibrations
and is intended to be coupled to the bony structure of the head, most commonly the mastoid
apophysis
3.2
mechanical coupler
device for calibrating bone-conduction vibrators designed to present a specified mechanical
impedance to a vibrator applied with a specified static force, and equipped with an
electromechanical transducer to enable the vibratory force level at the surface of contact
between vibrator and mechanical coupler to be determined
3.3
alternating force level
ten times the logarithm to the base 10 of the ratio of the squared r.m.s. value of the
alternating force transmitting the vibration to the square of the reference value of one
micronewton

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– 6 – 60318-6 © IEC:2007
NOTE 1 The unit of the level re 1μN is decibel (dB).
NOTE 2 The alternating force level is also called force level.
3.4
mechanical impedance
for a sinusoidal signal, the complex quotient of the alternating force transmitting the vibration
by the component of velocity of the object in the direction of the force
NOTE The unit is newton second per meter (N·s/m).
3.5
mechanical impedance level
ten times the logarithm to the base 10 of the ratio of the squared absolute value (modulus) of
the mechanical impedance to the square of the reference value of one newton second per
meter (Ns/m)
NOTE The unit of the level re 1 N·s/m is decibel (dB).
3.6
mechanical resistance
real part of the mechanical impedance
NOTE The unit is newton second per meter (N·s/m).
3.7
mechanical reactance
imaginary part of the mechanical impedance
NOTE The unit is newton second per meter (N·s/m).
3.8
force sensitivity
quotient of output voltage of the mechanical coupler by the applied alternating force
NOTE The unit is volt per newton (V/N).
3.9
force sensitivity level
ten times the logarithm to the base 10 of the ratio of the squared force sensitivity to the
square of the reference force sensitivity of one volt per newton (V/N)
NOTE The unit of the level re 1 V/N is decibel (dB).
4 Construction
4.1 General
The mechanical coupler shall consist of a rigid mass of approximately 3,5 kg containing a
force-sensing element which is surmounted by visco-elastic material having an external profile
as specified in 4.4. The mechanical impedance of the assembly for uniaxial vibration which is
coincident with its major axis of symmetry shall comply with the specifications in 4.2 and 4.3.
The whole assembly shall be supported in such a way as to be capable of sustaining a static
force of up to 6 N (including the weight of the vibrator under test, if mounted on a vertical
axis) with a frequency of natural oscil
...