Quality evaluation method for the sound field of directional loudspeaker array system

IEC 62777:2016(E) determines of the performance of directional loudspeaker array systems, compares these system types, and determines their proper practical application, by listing the characteristics which are useful for their specification. It specifies uniform measurement methods for these characteristics.

Methode zur Ermittlung der Qualität des Schallfeldes von Systemen aus Richtlautsprechergruppen

Méthode d'évaluation de la qualité du champ acoustique d'un système de haut-parleurs directionnels

L'IEC 62777:2016 s'applique à tous les types de systèmes de haut-parleurs directionnels, et aux parties dont ils sont composés ou qui sont utilisées comme auxiliaires dans ces systèmes. La présente norme se rapporte à la détermination des performances des systèmes de haut-parleurs directionnels, à la comparaison de ces types de systèmes et à la détermination de leur application pratique respective, en dressant la liste des caractéristiques utiles pour leur spécification. Elle définit des méthodes de mesure uniformes pour ces caractéristiques. La présente norme se limite à une description de l'espace audio qui entoure une personne et à la méthode de mesure correspondante. Elle ne considère pas les caractéristiques des haut-parleurs, qui sont spécifiées dans l'IEC 60268-5.

Metoda ovrednotenja kakovosti za področje zvoka usmerjenega sestava zvočnikov (IEC 62777:2016)

Ta mednarodni standard se uporablja za usmerjene sestave zvočnikov vseh vrst in za dele, iz katerih so ti sestavljeni ali ki se uporabljajo kot pomožni deli v takšnih sistemih. Ta standard obravnava ugotavljanje delovanja usmerjenih sestavov zvočnikov, primerjavo teh vrst sestavov in ugotavljanje njihove praktične uporabe z navedbo lastnosti, ki so uporabne za njihove specifikacije. Določa enotne merilne metode za te lastnosti. Ta standard je omejen na opis zvočnega prostora okoli osebe in ustrezno metodo merjenja. Ne obravnava lastnosti zvočnikov, ki so opredeljene v standardu IEC 60268-5.

General Information

Status
Withdrawn
Publication Date
15-Jun-2016
Withdrawal Date
15-Mar-2019
Current Stage
6060 - Document made available - Publishing
Start Date
10-Jun-2016
Completion Date
10-Jun-2016

Buy Standard

Standard
EN 62777:2016
English language
17 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Methode zur Ermittlung der Qualität des Schallfeldes von Systemen aus Richtlautsprechergruppen (IEC 62777:2016)Méthode d'évaluation de la qualité du champ acoustique d'un système de haut-parleurs directionnels (IEC 62777:2016)Quality Evaluation Method for the Sound Field of Directional Loudspeaker Array System (IEC 62777:2016)33.160.50PriborAccessoriesICS:Ta slovenski standard je istoveten z:EN 62777:2016SIST EN 62777:2016en,fr,de01-oktober-2016SIST EN 62777:2016SLOVENSKI

STANDARD
SIST EN 62777:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 62777
June 2016 ICS 33.160.50
English Version

Quality evaluation method for the sound field of directional loudspeaker array system (IEC 62777:2016)

Méthode d'évaluation de la qualité du champ acoustique d'un système de haut-parleurs directionnels (IEC 62777:2016)

Methode zur Ermittlung der Qualität des Schallfeldes von Systemen aus Richtlautsprechergruppen (IEC 62777:2016) This European Standard was approved by CENELEC on 2016-03-16. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17,

B-1000 Brussels © 2016 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN 62777:2016 E SIST EN 62777:2016

EN 62777:2016 2 European foreword The text of document 100/2603/FDIS, future edition 1 of IEC 62777, prepared by Technical Area 11 "Quality for audio, video and multimedia systems", of IEC/TC 100 "Audio, video and multimedia systems and equipment" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 62777:2016. The following dates are fixed: • latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2016-12-16 • latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2019-03-16

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 62777:2016 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 ISO 3743-1 NOTE Harmonized as EN ISO 3743-1. IEC ISO 3743-2 NOTE Harmonized as EN ISO 3743-2. SIST EN 62777:2016

EN 62777:2016 3 Annex ZA (normative)

Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When 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 of general terms and calculation methods HD 483.2 S2 -

IEC 60268-5 -
Sound system equipment - Part 5: Loudspeakers EN 60268-5 -
IEC 61672-1 -
Electroacoustics - Sound level meters - Part 1: Specifications EN 61672-1 -
SIST EN 62777:2016
SIST EN 62777:2016
IEC 62777 Edition 1.0 2016-02 INTERNATIONAL STANDARD

Quality evaluation method for the sound field of directional loudspeaker array systems

INTERNATIONAL ELECTROTECHNICAL COMMISSION
ICS 33.160.50
ISBN 978-2-8322-3136-4
® Registered trademark of the International Electrotechnical Commission ®

Warning! Make sure that you obtained this publication from an authorized distributor. SIST EN 62777:2016

– 2 – IEC 62777:2016  IEC 2016 CONTENTS FOREWORD ......................................................................................................................... 3 INTRODUCTION ................................................................................................................... 5 1 Scope ............................................................................................................................ 6 2 Normative references..................................................................................................... 6 3 Terms and definitions .................................................................................................... 6 4 Personal acoustic zone and sound pressure level ........................................................... 7 4.1 Personal acoustic zone ......................................................................................... 7 4.2 Personal distance between listeners ...................................................................... 8 4.3 Personal distance between a directional loudspeaker array system and a listener ................................................................................................................. 8 4.4 Average sound pressure level at a personal acoustic zone ..................................... 9 5 Personal acoustic zone index ......................................................................................... 9 5.1 General ................................................................................................................. 9 5.2 PAZI-x ................................................................................................................ 10 5.3 PAZI-y ................................................................................................................ 10 5.4 PAZI-xy ............................................................................................................... 10 5.5 PAZI-xyz ............................................................................................................. 10 6 Measurement of the sound pressure level for a personal acoustic zone ........................ 10 6.1 General ............................................................................................................... 10 6.2 Characteristics to be specified ............................................................................. 10 6.3 Method of measurement ...................................................................................... 11 6.3.1 Directional loudspeaker array system ........................................................... 11 6.3.2 Microphone .................................................................................................. 11 6.3.3 Test signals ................................................................................................. 11 6.3.4 Sound pressure level curves ........................................................................ 11 6.4 Test environment condition .................................................................................. 11 6.4.1 Temperature ................................................................................................ 11 6.4.2 Humidity ...................................................................................................... 11 7 Indication of the characteristics to be specified ............................................................. 11 Annex A (informative)

Example of standard specifications for a personal audio space ......... 13 Bibliography ....................................................................................................................... 14

Figure 1 – Personal acoustic zone ......................................................................................... 8 Figure 2 – Personal acoustic zone and sound pressure level ................................................. 8 Figure 3 – Measuring points of the personal acoustic zone .................................................... 9

Table 1 – Characteristics to be specified ............................................................................. 12 Table A.1 – Personal acoustic zone – Dimensioned example ............................................... 13

SIST EN 62777:2016

IEC 62777:2016  IEC 2016 – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________

QUALITY EVALUATION METHOD FOR THE SOUND FIELD
OF DIRECTIONAL LOUDSPEAKER ARRAY SYSTEMS

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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any services carried out by independent certification bodies. 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 62777 has been prepared by subcommittee subcommittee technical area 11: Quality for audio, video and multimedia systems, of IEC technical committee technical committee 100: Audio, video and multimedia systems and equipment. The text of this standard is based on the following documents: FDIS Report on voting 100/2603/FDIS 100/2637/RVD

Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. SIST EN 62777:2016

– 4 – IEC 62777:2016  IEC 2016 The committee has decided that the contents of this publication will remain unchanged until the stability 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. A bilingual version of this publication may be issued at a later date.

SIST EN 62777:2016

IEC 62777:2016  IEC 2016 – 5 – INTRODUCTION Directional loudspeaker array systems provide focused sound for a person to listen alone without disturbing others. This system is convenient for consumers who want to listen to sound without earphones or headphones. This system would be widely used in c

...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.