oSIST prEN IEC 60268-24:2023

Sound system equipment - Part 24: Headphones and earphones - active acoustic noise cancelling characteristics

IEC 60268-24:2023 is applicable to active acoustic noise-cancelling headphones and earphones which have the function of reducing the noise heard by the user by the output sound from the transducer generated by the environment noise detection microphone and the noise reduction signal processing circuit.
This document specifies the terms and definitions of this type of headphones or earphones, the characteristics to be specified, and the measurement and evaluation methods.
The noise detection microphone or microphones are mounted in the body, on the surface, or on an accessory of the headphones or earphones. Signal processing circuits are analogue and digital electronic circuits.
This document does not deal with equipment intended for hearing protection.
The noise cancelling characteristic measurement methods can be applied to headphones and earphones having no active noise cancelling function.

Elektroakustische Geräte - Teil 24: Kopfhörer und Ohrhörer - Eigenschaften zur aktiven Geräuschunterdrückung

Equipements pour systèmes électroacoustiques - Partie 24: Casques et écouteurs - Caractéristiques d'annulation active du bruit acoustique

L'IEC 60268-24:2023 s'applique aux casques et écouteurs à annulation active du bruit acoustique qui ont pour fonction de réduire le bruit entendu par l'utilisateur; le son obtenu en sortie provient du transducteur et il est généré par le microphone de détection du bruit ambiant et le circuit de traitement du signal de réduction du bruit.
Le présent document spécifie les termes et définitions relatifs à ce type de casques ou d'écouteurs, les caractéristiques à spécifier ainsi que les méthodes de mesurage et d'évaluation.
Le microphone ou les microphones de détection du bruit sont montés à l'intérieur du corps, sur la surface ou sur un accessoire des casques ou des écouteurs. Les circuits de traitement du signal sont des circuits électroniques analogiques et numériques.
Le présent document ne traite pas des équipements destinés à la protection auditive.
Les méthodes de mesurage des caractéristiques d'annulation du bruit peuvent être appliquées aux casques et aux écouteurs qui n'ont aucune fonction d'annulation active du bruit.

Oprema zvokovnega sistema - 24. del: Naglavne in ušesne slušalk - karakteristike aktivnega odpravljanja zvočnega hrupa

General Information

• Status: Not Published
• Public Enquiry End Date: 30-May-2023
• ICS: 33.160.01 - Audio, video and audiovisual systems in general
• ICS: 33.160.50 - Accessories
• Technical Committee: AVM - Audio, video and multimedia systems and equipment
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 21-Mar-2023
• Due Date: 08-Aug-2023
• Completion Date: 14-Jun-2023
• Ref Project: EN IEC 60268-24:2024 - Sound system equipment - Part 24: Headphones and earphones - Active acoustic noise cancelling characteristics

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 60268-24:2023
01-maj-2023
Oprema zvokovnega sistema - 24. del: Naglavne in ušesne slušalk - karakteristike
aktivnega odpravljanja zvočnega hrupa
Sound system equipment - Part 24: Headphones and earphones - active acoustic noise
cancelling characteristics
Equipements pour systèmes électroacoustiques - Partie 24: Casques et écouteurs -
Caractéristiques d'annulation active du bruit acoustique
Ta slovenski standard je istoveten z: prEN IEC 60268-24:2023
ICS:
33.160.50 Pribor Accessories
oSIST prEN IEC 60268-24:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 60268-24:2023

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oSIST prEN IEC 60268-24:2023
100/3880/CDV

COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60268-24 ED1
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2023-03-17 2023-06-09
SUPERSEDES DOCUMENTS:
100/3778/CD, 100/3822/CC

IEC TA 20 : ANALOGUE AND DIGITAL AUDIO
SECRETARIAT: SECRETARY:
Japan Mr Nobukazu Suzuki
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:

TC 100
Other TC/SCs are requested to indicate their interest, if any, in
this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft for
Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of
• any relevant patent rights of which they are aware and to provide supporting documentation,
• any relevant “in some countries” clauses to be included should this proposal proceed. Recipients are reminded that the
enquiry stage is the final stage for submitting "in some countries" clauses. See AC/22/2007.

TITLE:
SOUND SYSTEM EQUIPMENT – Part 24: Headphones and earphones – active acoustic noise cancelling
characteristics

PROPOSED STABILITY DATE: 2026

NOTE FROM TC/SC OFFICERS:

1
Copyright © 2023 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this
electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.
You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without
permission in writing from IEC.

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oSIST prEN IEC 60268-24:2023
– 2 – IEC CDV 60268-24  IEC:2023
2 CONTENTS
3
4 FOREWORD . 4
5 INTRODUCTION . 6
6 1 Scope . 7
7 2 Normative references . 7
8 3 Terms and definitions . 8
9 4 Measurement method for noise cancelling characteristics . 9
10 4.1 Characteristics to be specified . 9
11 4.2 Test signals . 10
12 4.2.1 Pink noise. 10
13 4.2.2 Simulated environmental noise . 10
14 4.3 Nominal environmental conditions . 13
15 4.3.1 Test site . 13
16 4.3.2 Ambient noise . 14
17 4.4 Test equipment . 14
18 4.4.1 Play back equipment for test signals . 14
19 4.4.2 Acoustic test equipment .
...