EN IEC 60263:2020
(Main)Scales and sizes for plotting frequency characteristics and polar diagrams
Scales and sizes for plotting frequency characteristics and polar diagrams
IEC 60263:2020 specifies standard aspect ratios for logarithmic or level characteristics expressed in decibels versus a logarithmic frequency axis and ranges for the radius of polar diagrams of level. Applications include hard copy printouts, electronic files (e.g., PDF files), scientific publications, screen displays in computer programs and apps, as well as graphs in standards. Informative examples of graphs that conform to the requirements in this document are found in Annex A. Although outside the scope of this document, graphs with a linear y-axis versus logarithmic frequency (e.g., phase, group delay, etc.) often accompany the standard aspect ratio graphs of level described in the normative part of this document. These are described in informative Annex B. IEC 60263:2020 cancels and replaces the third edition published in 1982. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) the scope is expanded to include electronic files (e.g., PDF), scientific publications, graphs in other standards, and screen displays in programs and apps; b) a Terms and Definitions clause has been added; c) aspect ratios of 20 dB/decade, and 0,5, 1, 1,25, and 2,5 decades/decade have been added; d) ranges of 60 dB or 30 dB are specified for polar plots of absolute level; a 30 dB range is specified for polar plots of relative level; e) as most graphs are now computer generated, tolerances and sizes have been removed; f) all informative figures have been updated with contemporary examples; g) an informative annex with information about linear y-axis vs. logarithmic frequency has been added.
Skalen und Größenverhältnisse zur Darstellung von Frequenzkurven und Polardiagrammen
Échelles et dimensions des graphiques pour le tracé des courbes de réponse en fréquence et des diagrammes polaires
L'IEC 60263:2020 spécifie les formats normalisés des caractéristiques logarithmiques ou de niveau exprimées en décibels en fonction d'un axe de fréquence logarithmique et des domaines de variation du rayon des diagrammes polaires de niveau. Les applications incluent les copies papier, les fichiers électroniques (fichiers PDF, par exemple), les publications scientifiques, les affichages à l'écran des programmes et applications, ainsi que les graphiques dans les normes. Des exemples de graphiques conformes aux exigences du présent document sont donnés à l'Annexe A. Bien qu'ils n’entrent pas dans le domaine d'application du présent document, les tracés avec un axe y linéaire en fonction d'une fréquence logarithmique (par exemple phase, temps de propagation de groupe, etc.) accompagnent souvent les graphiques de format normalisé du niveau décrit dans la partie normative du présent document. Ces tracés sont décrits à l'Annexe B (informative). L'IEC 60263:2020 annule et remplace la troisième édition parue en 1982. Cette édition constitue une révision technique. Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente: a) le domaine d'application a été élargi pour intégrer des fichiers électroniques (PDF, par exemple), des publications scientifiques, des graphiques d'autres normes et des affichages à l'écran des programmes et applications; b) un article Termes et définitions a été ajouté; c) les formats 20 dB/décade, et 0,5, 1, 1,25 et 2,5 décades/décade ont été ajoutés; d) des plages de 60 dB ou 30 dB ont été spécifiées pour les diagrammes polaires de niveau absolu; une plage de 30 dB a été spécifiée pour les diagrammes polaires de niveau relatif; e) la plupart des graphiques étant aujourd'hui générés par ordinateur, les tolérances et dimensions ont été supprimées; f) toutes les figures informatives ont été mises à jour avec des exemples contemporains; g) une annexe informative contenant des informations relatives à l'axe y linéaire en fonction de la fréquence logarithmique a été ajoutée.
Merila in velikosti za risanje frekvenčnih karakteristik in polarnih diagramov (IEC 60263:2020)
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2020
Merila in velikosti za risanje frekvenčnih karakteristik in polarnih diagramov (IEC
60263:2020)
Scales and sizes for plotting frequency characteristics and polar diagrams (IEC
60263:2020)
Skalen und Größenverhältnisse zur Darstellung von Frequenzkurven und
Polardiagrammen (IEC 60263:2020)
Echelles et dimensions des graphiques pour le tracé des courbes de réponse en
fréquence et des diagrammes polaires (IEC 60263:2020)
Ta slovenski standard je istoveten z: EN IEC 60263:2020
ICS:
01.100.25 Risbe s področja Electrical and electronics
elektrotehnike in elektronike engineering drawings
17.140.50 Elektroakustika Electroacoustics
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 60263
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2020
ICS 17.140.50
English Version
Scales and sizes for plotting frequency characteristics and polar
diagrams
(IEC 60263:2020)
Échelles et dimensions des graphiques pour le tracé des Skalen und Größenverhältnisse zur Darstellung von
courbes de réponse en fréquence et des diagrammes Frequenzkurven und Polardiagrammen
polaires (IEC 60263:2020)
(IEC 60263:2020)
This European Standard was approved by CENELEC on 2020-07-31. 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 60263:2020 E
European foreword
The text of document 29/1038/CDV, future edition 4 of IEC 60263, prepared by IEC/TC 29
"Electroacoustics" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-05-01
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-07-31
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 60263:2020 was approved by CENELEC as a European
Standard without any modification.
IEC 60263 ®
Edition 4.0 2020-06
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Scales and sizes for plotting frequency characteristics and polar diagrams
Échelles et dimensions des graphiques pour le tracé des courbes de réponse
en fréquence et des diagrammes polaires
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 17.140.50 ISBN 978-2-8322-8497-1
– 2 – IEC 60263:2020 © IEC 2020
CONTENTS
FOREWORD . 3
INTRODUCTION . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Characteristics plotted versus a logarithmic frequency scale . 6
4.1 Decibel vs. log frequency plots . 6
4.2 Log quantities vs. log frequency plots . 7
5 Polar level diagrams . 7
5.1 General . 7
5.2 Polar plots of absolute level . 7
5.3 Polar plots of relative level . 7
Annex A (informative) Examples of the requirements specified in this document . 8
Annex B (informative) Information regarding linear y-axis vs. logarithmic frequency
plots . 14
B.1 General . 14
B.2 Phase . 14
B.3 Group delay . 14
Figure A.1 – Example of a microphone calibration curve showing the relative response
in dB as a function of frequency with an aspect ratio of 10 dB/decade . 8
Figure A.2 – Example of the response of a loudspeaker crossover filter network with
an aspect ratio of 20 dB/decade . 9
Figure A.3 – Example of the response of a loudspeaker with an aspect ratio of
25 dB/decade (dB re. 20 µPa) . 9
Figure A.4 – Example of the response of a hearing aid with an aspect ratio of
50 dB/decade. 10
Figure A.5 – Example of the noise from a mobile communications device with an
aspect ratio of 0,5 decades/decade (10 dB/decade) . 10
Figure A.6 – Example of amplifier noise with an aspect ratio of 1 decade/decade
(20 dB/decade) . 11
Figure A.7 – Example of total harmonic distortion of an earphone with an aspect ratio
of 1,25 decades/decade (25 dB/decade) . 11
Figure A.8 – Example of total harmonic distortion of a loudspeaker with an aspect
ratio of 2,5 decades/decade (50 dB/decade) . 12
Figure A.9 – Example of a polar diagram of absolute level with a range of 60 dB,
showing the sound pressure level from a siren at a distance of 3 m . 12
Figure A.10 – Example of a polar diagram of relative level with a range of 30 dB and a
reference circle radius of 25 dB, showing the directional response of a highly
directional shotgun microphone at 2,5 kHz . 13
IEC 60263:2020 © IEC 2020 – 3 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
SCALES AND SIZES FOR PLOTTING FREQUENCY
CHARACTERISTICS AND POLAR DIAGRAMS
FOREWORD
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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 60263 has been prepared by IEC technical committee TC 29:
Electroacoustics.
This fourth edition cancels and replaces the third edition published in 1982. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the scope is expanded to include electronic files (e.g., PDF), scientific publications, graphs
in other standards, and screen displays in programs and apps;
b) a Terms and Definitions clause has been added;
c) aspect ratios of 20 dB/decade, and 0,5, 1, 1,25, and 2,5 decades/decade have been added;
d) ranges of 60 dB or 30 dB are specified for polar plots of absolute level; a 30 dB range is
specified for polar plots of relative level;
e) as most graphs are now computer generated, tolerances and sizes have been removed;
f) all informative figures have been updated with contemporary examples;
– 4 – IEC 60263:2020 © IEC 2020
g) an informative annex with information about linear y-axis vs. logarithmic frequency has been
added.
The text of this International Standard is based on the following documents:
CDV Report on voting
29/1038/CDV 29/1060/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://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.
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