Portable multimedia equipment - Determination of battery duration - Part 1: Powered loudspeaker equipment

IEC 63296-1:2021 specifies the methods for measuring the battery duration at defined sound pressure levels for continuous music playback of battery-powered loudspeaker equipment. A primary battery or secondary battery can be used as a power source for the loudspeaker and its composite equipment. In the case of composite equipment, this method for the measurement of battery duration can be applied under the condition of powered loudspeaker playback only.

Matériel multimédia portable - Détermination de la durée des batteries - Partie 1: Haut-parleurs alimentés par batteries

L'IEC 63296-1:2021 spécifie les méthodes de mesurage de la durée des batteries à des niveaux de pression acoustique définis pour la lecture continue de fichiers musicaux par des haut-parleurs alimentés par batteries. Une pile ou une batterie d'accumulateurs peut être utilisée comme source d'énergie pour alimenter le haut-parleur et son matériel d'interconnexion. Dans le cas d'un matériel d'interconnexion, cette méthode de mesurage de la durée des batteries peut être appliquée lorsque le haut-parleur alimenté par batterie est en mode lecture seulement.

General Information

Status
Published
Publication Date
11-Jul-2021
Current Stage
PPUB - Publication issued
Completion Date
12-Jul-2021
Ref Project

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IEC 63296-1
Edition 1.0 2021-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Portable multimedia equipment – Determination of battery duration –
Part 1: Powered loudspeaker equipment
Matériel multimédia portable – Détermination de la durée des batteries –
Partie 1: Haut-parleurs alimentés par batteries
IEC 63296-1:2021-07(en-fr)
---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC 63296-1
Edition 1.0 2021-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Portable multimedia equipment – Determination of battery duration –
Part 1: Powered loudspeaker equipment
Matériel multimédia portable – Détermination de la durée des batteries –
Partie 1: Haut-parleurs alimentés par batteries
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 33.160.50 ISBN 978-2-8322-9983-8

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
---------------------- Page: 3 ----------------------
– 2 – IEC 63296-1:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 3

INTRODUCTION ..................................................................................................................... 5

1 Scope .............................................................................................................................. 6

2 Normative references ...................................................................................................... 6

3 Terms, definitions and abbreviated terms ........................................................................ 6

3.1 Terms and definitions .............................................................................................. 6

3.2 Abbreviated terms ................................................................................................... 7

4 Measurement conditions .................................................................................................. 8

4.1 General ................................................................................................................... 8

4.2 Environmental conditions ........................................................................................ 8

4.3 Acoustical environment ........................................................................................... 8

4.4 Input signal ............................................................................................................. 8

4.4.1 Test signal ....................................................................................................... 8

4.4.2 Receiver .......................................................................................................... 8

4.4.3 Other digital equipment .................................................................................... 8

4.5 Sound level meter ................................................................................................... 8

4.6 Reproduced sound pressure level ........................................................................... 8

4.7 Background noise ................................................................................................... 9

4.8 Measurement accuracy ........................................................................................... 9

4.9 Battery .................................................................................................................... 9

5 Measurement method ...................................................................................................... 9

5.1 General ................................................................................................................... 9

5.2 Operating condition ............................................................................................... 10

5.3 Adjustment of controls .......................................................................................... 10

5.4 Measurement of battery duration ........................................................................... 10

5.5 Characteristics to be specified .............................................................................. 11

Annex A (informative) Location for sound pressure test ....................................................... 12

A.1 General ................................................................................................................. 12

A.2 Example test locations .......................................................................................... 12

Annex B (informative) Examples of battery duration specifications ....................................... 14

B.1 General ................................................................................................................. 14

B.2 Example 1 of a battery duration specification ........................................................ 14

B.3 Example 2 of a battery duration specification ........................................................ 14

Bibliography .......................................................................................................................... 15

Figure 1 – Connection diagram of equipment .......................................................................... 9

Figure 2 – Order of measurement ......................................................................................... 10

Figure A.1 – Top view ........................................................................................................... 12

Figure A.2 – Top and front view ............................................................................................ 13

Figure A.3 – Side view .......................................................................................................... 13

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IEC 63296-1:2021 © IEC 2021 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
PORTABLE MULTIMEDIA EQUIPMENT –
DETERMINATION OF BATTERY DURATION –
Part 1: Powered loudspeaker equipment
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,

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preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

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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.

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consensus of opinion on the relevant subjects since each technical committee has representation from all

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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.

IEC 63296-1 has been prepared by technical area 19: Environmental and energy aspects for

multimedia systems and equipment, of IEC technical committee 100: Audio, video and

multimedia systems and equipment. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
100/3546/CDV 100/3596/RVC

Full information on the voting for its approval can be found in the report on voting indicated in

the above table.
The language used for the development of this International Standard is English.

A list of all parts in the IEC 63296 series, published under the general title Portable multimedia

equipment – Determination of battery duration, can be found on the IEC website.
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– 4 – IEC 63296-1:2021 © IEC 2021

This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

described in greater detail at www.iec.ch/standardsdev/publications.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under webstore.iec.ch in the data related to the

specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
---------------------- Page: 6 ----------------------
IEC 63296-1:2021 © IEC 2021 – 5 –
INTRODUCTION

This document specifies methods of measurement for battery duration on powered loudspeaker

equipment. The operating time of a battery-powered powered loudspeaker varies greatly

depending on the reproduced sound pressure from the loudspeaker. Since the reproduced

sound pressure of a powered loudspeaker varies depending on the purpose of use, it is a

measurement method that measures the battery operating time at different sound pressures.

IEC 63296 series currently consists of the following planned or published parts:
– Part 1: Powered loudspeaker equipment
– Part 2: Headphones and earphones with active noise-cancelling functions
– Part 3: Personal sound amplification equipment
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– 6 – IEC 63296-1:2021 © IEC 2021
PORTABLE MULTIMEDIA EQUIPMENT –
DETERMINATION OF BATTERY DURATION –
Part 1: Powered loudspeaker equipment
1 Scope

This part of IEC 63296 specifies the methods for measuring the battery duration at defined

sound pressure levels for continuous music playback of battery-powered loudspeaker

equipment. A primary battery or secondary battery can be used as a power source for the

loudspeaker and its composite equipment. In the case of composite equipment, this method for

the measurement of battery duration can be applied under the condition of powered loudspeaker

playback only.

NOTE Loudspeakers designed for short hearing distances are not within the scope of this document.

2 Normative references

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.
IEC 60268-1, Sound system equipment – Part 1: General
IEC 60268-5:2003, Sound system equipment – Part 5: Loudspeakers
IEC 60268-5:2003/AMD1:2007
IEC 61672-1, Electroacoustics – Sound level meters – Part 1: Specifications

IEC 61938, Multimedia systems – Guide to the recommended characteristics of analogue

interfaces to achieve interoperability (GMT)
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
battery

power storage equipment that is capable of powering equipment such that the equipment can

provide its primary functions
3.1.2
battery duration

time during which the equipment can provide its main function using its built-in power source

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IEC 63296-1:2021 © IEC 2021 – 7 –
3.1.3
powered loudspeaker
battery-driven loudspeaker system with built-in amplifier
3.1.4
equipment under test
EUT
equipment to be measured using the methods described in this document

Note 1 to entry: Other terminology used is device under test (DUT) or unit under test (UUT).

Note 2 to entry: This note applies to the French language only.
3.1.5
free-field condition

environment in which the sound pressure decreases with the distance from a point source

EXAMPLE Anechoic room
3.1.6
input terminal
terminal for audio signal input
3.1.7
receiver
radio receiver and wireless receiver circuit such as Wi-Fi and Bluetooth
3.1.8
reference axis
line that passes through the reference plane at the reference point
Note 1 to entry: The manufacturer shall specify the direction.

Note 2 to entry: If not specified, the axis is perpendicular to the air reference plane passing through the reference

point of the speaker system in accordance with IEC 60268-5.
3.1.9
reproduced sound pressure level
A-weighted and time-weighted sound level at a point 1 m on the reference axis

Note 1 to entry: When measured at a distance other than 1 m, it is specified as a value converted to 1 m.

Note 2 to entry: Unless otherwise specified, the reference sound pressure is 20 μPа for airborne sound.

Note 3 to entry: The reproduced sound pressure level is expressed in dBA.
3.1.10
smart speaker

equipment for audio playback with internal microphone for voice recognition and communication

3.2 Abbreviated terms
AM amplitude modulation
dB decibel
dBA A-weighted decibel
dB decibels relative to full scale
FM frequency modulation
kPa kilopascal
RMS root mean square
---------------------- Page: 9 ----------------------
– 8 – IEC 63296-1:2021 © IEC 2021
SPL sound pressure level
4 Measurement conditions
4.1 General

Unless otherwise specified, items related to acoustic characteristics are performed in

accordance with IEC 60268-5. Connection is based on IEC 61938.
4.2 Environmental conditions
• Air pressure 86 kPa to 106 kPa
• Ambient temperature 15 °C to 35 °C, preferably at 20 °C
• Relative humidity 25 % to 75 %
4.3 Acoustical environment

SPL measurements shall be made under the free-field conditions specified in IEC 60268-5:2003,

5.2.
4.4 Input signal
4.4.1 Test signal

The simulated programme signal specified by IEC 60268-1 is used. The crest factor shall be a

noise signal of 2, the deviation shall be within ±10 %, and a reference voltage measurement

signal of 1,0 V RMS measured with an RMS voltmeter. For the digital signal, a simulated

programme signal recorded at a recording level of −10 dB is used.
4.4.2 Receiver

The radio receiver uses a standard signal generator, and the modulation of the test signal is

30 % modulated for both the AM broadcast receiver and the FM broadcast receiver. DAB/DAB+

receivers and digital wireless receivers, including Wi-Fi and Bluetooth receivers, use a test

signal recorded at a recording level of −10 dB .
4.4.3 Other digital equipment
Use a test signal recorded at a recording level of −10 dB .
NOTE If compressed recording is used, level before compression is −10 dB.
4.5 Sound level meter

Measurements in free-field condition shall be made using a sound level meter having a known

calibration. A Class 1 certified meter as specified in IEC 61672-1 with A-weighting, as specified

in IEC 60268-1, shall be used.
4.6 Reproduced sound pressure level

Reproduced sound pressure level is a value assumed by the manufacturer and is selected from

the values given in a) to c). If any other value is used, specify the purpose together with the

value in the measurement report. In addition, values measured at different reproduced sound

pressure levels can specify multiple battery duration results for each sound pressure.

a) 60 dBA: reproduced sound pressure level designed for use close to an intended listener.

This situation assumes listening at a quiet room at low volume.

b) 70 dBA: reproduced sound pressure level intended for use at medium sound level. This

situation assumes listening at a typical volume.
---------------------- Page: 10 ----------------------
IEC 63296-1:2021 © IEC 2021 – 9 –

c) 80 dBA: reproduced sound pressure level intended for use at high sound level. This situation

assumes listening outdoors or at a loud volume.
4.7 Background noise

In the environment related to sound-pressure measurement, background noise shall be 10 dB

or less of the measured value.
4.8 Measurement accuracy
The total error of the measured value shall be within ±2 dB.
4.9 Battery

Dry batteries (primary batteries) shall be unused with the standard capacity of the type specified

by the manufacturer.

Rechargeable batteries (secondary batteries) shall be those attached to the equipment or

activated with a standard capacity of the type specified by the manufacturer in accordance with

the instruction manual, etc. They shall be fully charged in accordance with the EUT’s instruction

manual.
5 Measurement method
5.1 General

Connect the EUT and measuring instruments as described in Figure 1. Measures or tests are

performed on the EUT equipment in its factory shipping condition, unless otherwise specified.

If there is an input signal or video output that affects the battery duration, the setting is

determined by the manufacturer and clearly stated. This document recommends the order

stated in Figure 2 for the measurement procedure.
NOTE Annex A shows an example of the measurement arrangement.
Figure 1 – Connection diagram of equipment
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– 10 – IEC 63296-1:2021 © IEC 2021
Figure 2 – Order of measurement
5.2 Operating condition
Set to a condition that is continuous sound output.

NOTE A smart loudspeaker can specify the continuous music playback time excluding the standby time.

5.3 Adjustment of controls

The EUT is installed in its shipping condition, and the volume control shall be set to a

reproduced sound pressure level specified in 4.6, measured 1 m from the loudspeaker by the

sound level meter. If the specified output cannot be obtained due to the coarseness of the

resolution of the volume control circuit, the input signal level may be adjusted within the

resolution range of the volume controller. If the reason is clearly stated, one may measure using

settings other than these conditions.
5.4 Measurement of battery duration

After setting up the EUT to the measurement conditions, start the measurement using the

measurement battery. Measure the time until the sound is interrupted, or abnormal operation is

performed. The state where the sound is interrupted is a state where the sound output from the

speaker is stopped and does not include a state where the sound is distorted or the sound

pressure is low. If the sound pressure changes by more than 3 dB during measurement, specify

the state.
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IEC 63296-1:2021 © IEC 2021 – 11 –
5.5 Characteristics to be specified
The manufacturer should state these values in the specification.

a) Battery duration, in 15 min steps up to 4 h; in 30 min steps for battery duration of over 4 h.

b) Description of signal input and SPL in dBA/m.
c) Battery type used as a power source: fixed installation or user exchangeable.
Examples of battery duration specifications are provided in Annex B.
---------------------- Page: 13 ----------------------
– 12 – IEC 63296-1:2021 © IEC 2021
Annex A
(informative)
Location for sound pressure test
A.1 General

Measurement location (sound meter placement): 1 m in front of the primary sound radiating

surface plane of the equipment under test.
A.2 Example test locations

Figure A.1, Figure A.2 and Figure A.3 show the positioning of the loudspeaker of the EUT and

of the sound meter in relation to each other for the test.
Figure A.1 – Top view
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IEC 63296-1:2021 © IEC 2021 – 13 –
Figure A.2 – Top and front view
Figure A.3 – Side view
---------------------- Page: 15 ----------------------
– 14 – IEC 63296-1:2021 © IEC 2021
Annex B
(informative)
Examples of battery duration specifications
B.1 General
Examples of specifications for battery duration are shown.
B.2 Example 1 of a battery duration specification
Battery duration

Approximately 4 h (Wi-Fi reception, playback at 70 dBA/m), AA manganese battery (R20P)

"70 dBA/m" is the sound pressure expected to be used at a medium sounds level in a room.

B.3 Example 2 of a battery duration specification
Battery duration
1) Battery duration of lithium-ion battery for Wi-Fi connection at 60 dBA/m
Approximately 8 h
2) Battery duration of lithium-ion battery for Wi-Fi connection at 70 dBA/m
Approximately 6 h
60 dBA/m: sound pressure designed for use close to an intended listener
70 dBA/m: sound pressure intended for use at medium sound level

NOTE 1 For composite equipment, battery duration can be specified by the shortest battery duration condition.

NOTE 2 It is desirable to clarify the trademark and model of the battery type.
---------------------- Page: 16 ----------------------
IEC 63296-1:2021 © IEC 2021 – 15 –
Bibliography

IEC 60268-2, Sound system equipment – Part 2: Explanation of general terms and calculation

methods
IEC 60958 (all parts), Digital audio interface

IEC 62087-6, Audio, video, and related equipment – Determination of power consumption –

Part 6: Audio equipment

JEITA CP-2905B, Methods of Measurement for Battery Duration on Portable Audio Equipment

JEITA CP-2906, Methods of Measurement for Battery Duration on Powered Loudspeaker

Equipment
JEITA RC-8126B, Loudspeaker system with built-in amplifier
___________
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– 16 – IEC 63296-1:2021 © IEC 2021
SOMMAIRE

AVANT-PROPOS .................................................................................................................. 17

INTRODUCTION ................................................................................................................... 19

1 Domaine d'application ................................................................................................... 20

2 Références normatives .................................................................................................. 20

3 Termes, définitions et abréviations ................................................................................ 20

3.1 Termes et définitions ............................................................................................ 20

3.2 Abréviations .......................................................................................................... 22

4 Conditions de mesurage ................................................................................................ 22

4.1 Gé
...

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