Microspeakers (IEC 63034:2020)

IEC 63034:2020 specifies the characteristics of microspeakers as well as the relevant test methods on microspeakers using steady-state sinusoidal signals, sinusoidal chirp, multi-tone or noise. The main characteristics include, but are not limited to, impedance, displacement, amplitude frequency response, distortion, and power handling.

Mikrolautsprecher (IEC 63034:2020)

Micro-haut-parleurs (IEC 63034:2020)

L'IEC 63034:2020 spécifie les caractéristiques des micro-haut-parleurs, ainsi que les méthodes d'essai pertinentes des micro-haut-parleurs à l'aide de signaux sinusoïdaux en régime permanent, d'une modulation de fréquence pulsée sinusoïdale, de signaux à fréquences multiples ou de bruit. Les principales caractéristiques incluent l'impédance, le déplacement, la réponse en fréquence/amplitude, la distorsion, et la gestion de puissance, cette liste n'étant pas exhaustive.

Mikrozvočniki (IEC 63034:2020)

General Information

Status
Published
Publication Date
04-Mar-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Sep-2020
Due Date
07-Nov-2020
Completion Date
05-Mar-2021

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SLOVENSKI STANDARD
SIST EN IEC 63034:2021
01-april-2021
Mikrozvočniki (IEC 63034:2020)
Microspeakers (IEC 63034:2020)
Mikrolautsprecher (IEC 63034:2020)
Micro-haut-parleurs (IEC 63034:2020)
Ta slovenski standard je istoveten z: EN IEC 63034:2020
ICS:
33.160.50 Pribor Accessories
SIST EN IEC 63034:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 63034:2021
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SIST EN IEC 63034:2021
EUROPEAN STANDARD EN IEC 63034
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2020
ICS 33.160.50
English Version
Microspeakers
(IEC 63034:2020)
Micro-haut-parleurs Mikrolautsprecher
(IEC 63034:2020) (IEC 63034:2020)

This European Standard was approved by CENELEC on 2020-07-29. 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 CEN-CENELEC

Management Centre 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 CEN-CENELEC Management Centre has the

same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,

Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the

Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,

Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 63034:2020 E
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SIST EN IEC 63034:2021
EN IEC 63034:2020 (E)
European foreword

The text of document 100/3107/CDV, future edition 1 of IEC 63034, prepared by IEC/TC 100 "Audio,

video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and

approved by CENELEC as EN IEC 63034:2020.
The following dates are fixed:

• latest date by which the document has to be implemented at national (dop) 2021-04-29

level by publication of an identical national standard or by endorsement

• latest date by which the national standards conflicting with the (dow) 2023-07-29

document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice

The text of the International Standard IEC 63034:2020 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 60068-2-1:2007 NOTE Harmonized as EN 60068-2-1:2007 (not modified)
IEC 60068-2-2:2007 NOTE Harmonized as EN 60068-2-2:2007 (not modified)
IEC 60068-2-14:2009 NOTE Harmonized as EN 60068-2-14:2009 (not modified)
IEC 60068-2-30:2005 NOTE Harmonized as EN 60068-2-30:2005 (not modified)
IEC 60068-2-78:2012 NOTE Harmonized as EN 60068-2-78:2013 (not modified)
IEC 60268-3 NOTE Harmonized as EN IEC 60268-3
IEC 60268-5 NOTE Harmonized as EN 60268-5
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SIST EN IEC 63034:2021
EN IEC 63034:2020 (E)
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

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.

NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant

EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:

www.cenelec.eu.
Publication Year Title EN/HD Year
IEC 60268-1 - Sound system equipment. Part 1: General HD 483.1 S2 -
IEC 60268-2 - Sound system equipment. Part 2: Explanation HD 483.2 S2 -
of general terms and calculation methods

IEC 60268-21 2018 Sound system equipment - Part 21: Acoustical EN IEC 60268-21 2018

(output-based) measurements
IEC 60268-22 2020 Sound system equipment - Electrical and EN IEC 60268-22 —
mechanical measurements (TA 20)
IEC 61260-1 - Electroacoustics - Octave-band and fractional- EN 61260-1 -
octave-band filters - Part 1: Specifications
To be published. Stage at the time of publication: prEN IEC 60268-22:2019.
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SIST EN IEC 63034:2021
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SIST EN IEC 63034:2021
IEC 63034
Edition 1.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Microspeakers
Micro-haut-parleurs
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.50 ISBN 978-2-8322-8312-7

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
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SIST EN IEC 63034:2021
– 2 – IEC 63034:2020  IEC 2020
CONTENTS

FOREWORD ........................................................................................................................... 6

1 Scope .............................................................................................................................. 8

2 Normative references ...................................................................................................... 8

3 Terms, definitions and abbreviated terms ........................................................................ 8

3.1 Terms and definitions .............................................................................................. 8

3.2 Abbreviated terms ................................................................................................... 8

4 Conditions of measurement ............................................................................................. 9

4.1 Rated measuring conditions .................................................................................... 9

4.2 Climatic conditions .................................................................................................. 9

4.3 Normal measuring conditions .................................................................................. 9

5 Acoustical environment .................................................................................................. 10

5.1 General ................................................................................................................. 10

5.2 Free-field conditions ............................................................................................. 10

5.3 Half-space free-field conditions ............................................................................. 10

5.4 Simulated free-field conditions .............................................................................. 10

5.5 Half-space simulated free-field conditions ............................................................. 10

6 Mounting of the microspeaker ........................................................................................ 10

6.1 Mounting and acoustic loading of microspeaker units ............................................ 10

6.2 Mounting and acoustic loading of microspeaker systems ...................................... 11

6.3 Standard micro-baffle ............................................................................................ 11

6.4 Measuring plane wave tube................................................................................... 12

7 Positioning of microspeaker and measuring microphone ................................................ 13

7.1 Positioning of the microspeaker ............................................................................ 13

7.1.1 Rated geometrical condition .......................................................................... 13

7.1.2 Reference plane ............................................................................................ 13

7.1.3 Reference point ............................................................................................. 13

7.1.4 Normal vector ................................................................................................ 13

7.1.5 Polar vector ................................................................................................... 14

7.2 Measuring distance under free-field and half-space free-field conditions ............... 14

7.2.1 Far-field condition .......................................................................................... 14

7.2.2 Single microspeaker unit (transducer) ............................................................ 14

7.2.3 Multi-unit microspeaker systems .................................................................... 14

7.3 Positioning of microspeaker and microphone in simulated free-field and half-

space free-field conditions .................................................................................... 14

8 Measuring equipment .................................................................................................... 15

9 Accuracy of the measurement........................................................................................ 15

9.1 General ................................................................................................................. 15

9.2 Unwanted acoustic and electrical noise ................................................................. 15

9.3 Accuracy of the mounting ...................................................................................... 15

9.4 Accuracy of the measuring equipment ................................................................... 15

9.5 Accuracy of acoustic environment ......................................................................... 15

10 Marking of terminals and controls .................................................................................. 15

10.1 General ................................................................................................................. 15

10.2 Positive terminal ................................................................................................... 16

10.2.1 Characteristic to be specified ......................................................................... 16

10.2.2 Marking ......................................................................................................... 16

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SIST EN IEC 63034:2021
IEC 63034:2020  IEC 2020 – 3 –

10.2.3 Method of testing ........................................................................................... 16

11 Test signals ................................................................................................................... 16

11.1 General ................................................................................................................. 16

11.2 Steady-state sinusoidal signal ............................................................................... 16

11.3 Sinusoidal chirp signal .......................................................................................... 16

11.4 Discrete multi-tone sinusoidal signal ..................................................................... 17

11.5 Broadband noise signal ......................................................................................... 18

11.6 Narrow-band noise signal ..................................................................................... 18

12 Preconditioning .............................................................................................................. 18

12.1 Acclimatization ...................................................................................................... 18

12.2 Pre-loading ........................................................................................................... 18

13 Electrical input impedance ............................................................................................. 19

13.1 Electrical input impedance curve ........................................................................... 19

13.1.1 Characteristics to be specified ....................................................................... 19

13.1.2 Method of measurement ................................................................................ 19

13.2 Rated impedance .................................................................................................. 19

14 Small signal parameters of the microspeaker ................................................................. 19

14.1 General ................................................................................................................. 19

14.2 Characteristics to be specified .............................................................................. 20

14.2.1 Resonance frequency f ................................................................................ 20

14.2.2 DC resistance of driver voice coil R ............................................................. 20

14.2.3 Voice coil inductance L ................................................................................ 20

14.2.4 Total Q-factor Q ........................................................................................... 20

14.2.5 Electrical Q-factor Q ................................................................................... 20

14.2.6 Mechanical Q-factor Q ............................................................................... 20

14.2.7 Mechanical compliance C ........................................................................... 20

14.2.8 Moving mass M .......................................................................................... 21

14.2.9 Mechanical resistance R ............................................................................ 21

14.2.10 Force factor Bl ............................................................................................... 21

14.2.11 Equivalent air volume of a microspeaker unit compliance V ........................ 21

14.2.12 Effective radiation area S ............................................................................. 21

14.3 Method of measurement ....................................................................................... 21

14.3.1 General ......................................................................................................... 21

14.3.2 Laser ranging method .................................................................................... 21

14.3.3 Added volume method ................................................................................... 23

14.3.4 Added mass method ...................................................................................... 25

15 Displacement ................................................................................................................. 25

15.1 Displacement curve .............................................................................................. 25

15.1.1 Characteristics to be specified ....................................................................... 25

15.1.2 Method of measurement ................................................................................ 25

15.2 DC component X ................................................................................................ 26

15.2.1 Characteristics to be specified ....................................................................... 26

15.2.2 Method of measurement ................................................................................ 27

15.3 Distortion limited peak displacement X ................................................................ 27

15.3.1 Characteristics to be specified ....................................................................... 27

15.3.2 Method of measurement ................................................................................ 27

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SIST EN IEC 63034:2021
– 4 – IEC 63034:2020  IEC 2020

15.4 Sinusoidal peak displacement X .......................................................................... 27

16 Amplitude frequency response ....................................................................................... 28

16.1 Rated frequency range .......................................................................................... 28

16.2 Frequency response ............................................................................................. 28

16.2.1 Characteristic to be specified ......................................................................... 28

16.2.2 Method of measurement ................................................................................ 28

16.3 Mean sound pressure in a stated frequency band ................................................. 28

16.3.1 Characteristics to be specified ....................................................................... 28

16.3.2 Method of measurement ................................................................................ 28

16.4 Effective frequency range ..................................................................................... 29

16.4.1 Characteristics to be specified ....................................................................... 29

16.4.2 Method of measurement ................................................................................ 29

17 Amplitude non-linearity .................................................................................................. 29

17.1 Total harmonic distortion (THD) ............................................................................ 29

17.1.1 Characteristic to be specified ......................................................................... 29

17.1.2 Method of measurement for input voltages up to the rated sinusoidal

voltage .......................................................................................................... 29

17.2 Harmonic distortion of the n order ....................................................................... 30

17.2.1 Characteristic to be specified ......................................................................... 30

17.2.2 Method of measurement for input voltages up to the rated sinusoidal

voltage .......................................................................................................... 30

17.3 Total higher-order harmonic distortion components (HOHD) ................................. 30

17.3.1 Characteristic to be specified ......................................................................... 30

17.3.2 Method of measurement for input voltages up to the rated sinusoidal

voltage .......................................................................................................... 30

17.4 Modulation distortion of the n order (where n = 2 or n = 3) .................................. 31

17.4.1 Characteristic to be specified ......................................................................... 31

17.4.2 Method of measurement ................................................................................ 31

18 Listening test ................................................................................................................. 32

18.1 Listening test for normal operation ........................................................................ 32

18.2 Listening test for irregular distortion ...................................................................... 32

19 Input voltage/Electrical power ........................................................................................ 33

19.1 Rated noise voltage/power .................................................................................... 33

19.1.1 Characteristic to be specified ......................................................................... 33

19.1.2 Method of measurement ................................................................................ 33

19.2 Short-term maximum input voltage/power ............................................................. 34

19.2.1 Characteristic to be specified ......................................................................... 34

19.2.2 Method of measurement ................................................................................ 34

19.2.3 Protective devices ......................................................................................... 34

19.3 Long-term maximum input voltage/power .............................................................. 35

19.3.1 Characteristic to be specified ......................................................................... 35

19.3.2 Method of measurement ................................................................................ 35

19.3.3 Protective devices ......................................................................................... 35

19.4 Rated sinusoidal voltage/power ............................................................................ 35

19.4.1 Characteristic to be specified ......................................................................... 35

19.4.2 Method of measurement ................................................................................ 35

20 Environmental testing .................................................................................................... 36

20.1 Temperature ranges .............................................................................................. 36

20.1.1 Performance-limited temperature range – Characteristic to be specified ........ 36

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SIST EN IEC 63034:2021
IEC 63034:2020  IEC 2020 – 5 –

20.1.2 Damage-limited temperature range – Characteristic to be specified ............... 36

20.2 Humidity ranges .................................................................................................... 36

20.2.1 Relative humidity range – Characteristic to be specified ................................ 36

20.2.2 Damage-limited humidity range – Characteristic to be specified ..................... 36

20.3 Cold storage ......................................................................................................... 36

20.3.1 Characteristic to be specified ......................................................................... 36

20.3.2 Method of measurement ................................................................................ 36

20.4 Cold usage ........................................................................................................... 36

20.4.1 Characteristic to be specified ......................................................................... 36

20.4.2 Method of measurement ................................................................................ 36

20.5 Dry heat storage ................................................................................................... 37

20.5.1 Characteristic to be specified ......................................................................... 37

20.5.2 Method of measurement ................................................................................ 37

20.6 Dry heat usage ..................................................................................................... 37

20.6.1 Characteristic to be specified ......................................................................... 37

20.6.2 Method of measurement ................................................................................ 37

20.7 Thermal shock (rapid change of temperature with prescribed time of

transition) ............................................................................................................. 38

20.7.1 Characteristic to be specified ......................................................................... 38

20.7.2 Method of measurement ................................................................................ 38

20.8 Steady damp heat ................................................................................................. 38

20.8.1 Characteristic to be specified ......................................................................... 38

20.8.2 Method of measurement ................................................................................ 38

21 Stray magnetic fields ..................................................................................................... 39

21.1 General ................................................................................................................. 39

21.2 Static components ................................................................................................ 39

21.2.1 Characteristic to be specified ......................................................................... 39

21.2.2 Method of measurement ................................................................................ 39

21.3 Dynamic components ............................................................................................ 40

21.3.1 Characteristic to be specified ......................................................................... 40

21.3.2 Method of measurement ................................................................................ 40

22 Physical characteristics ................................................................................................. 41

22.1 Dimensions ........................................................................................................... 41

22.2 Weight .................................................................................................................. 41

23 Design data ................................................................................................................... 41

Bibliography .......................................................................................................................... 42

Figure 1 – Standard micro-baffle ........................................................................................... 11

Figure 2 – Standard micro-baffle with sub-baffle ................................................................... 12

Figure 3 – Plane wave tube .................................................................................................. 12

Figure 4 – Rated geometrical conditions of the microspeaker................................................ 13

Figure 5 – Electrical input impedance curve of the microspeaker .......................................... 23

Figure 6 – Peak and bottom values of displacement ............................................................. 26

Figure 7 – Displacement curve .............................................................................................. 26

Figure 8 – DC component of displacement ............................................................................ 27

Figure 9 – Block diagram of test setup .................................................................................. 33

Figure 10 – Measuring apparatus for stray magnetic field ..................................................... 39

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SIST EN IEC 63034:2021
– 6 – IEC 63034:2020  IEC 2020
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
MICROSPEAKERS
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 coll
...

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