AES Standard on Acoustics - Sound Source Modeling - Loudspeaker Polar Radiation Measurements

AES56-2008 STANDARDS AND (reaffirmed 2019) INFORMATION DOCUMENTS

AES standard on acoustics - Sound source modeling - Loudspeaker polar radiation measurements

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Attention is drawn to the possibility that some of the elements of this AES standard or information document document information or standard AES this of elements the of some that possibility the to drawn is Attention

d opportunities to comment or object to any provision. provision. any to object or comment to opportunities d provide were parties all approval, to Prior standard.

manufacturing, marketing, purchasing, or using products, processes, or procedures not in agreement with the the with agreement in not procedures or processes, products, using or purchasing, marketing, manufacturing,

her or not he or she has approved the document, from from document, the approved has she or he not or her whet anyone, preclude respect any in not does standard

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and materially affected by its scope and provisions and and provisions and scope its by affected materially and directly those of consensus a implies standard AES An

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predictions, and loudspeaker data sheets. sheets. data loudspeaker and predictions,

tion in room acoustic, electro-acoustic, and sound system system sound and electro-acoustic, acoustic, room in tion applica for suitable is data acquired This documented.

oudspeaker polar radiation data shall be made and and made be shall data radiation polar oudspeaker l of measurements the how describes standard This

Abstract Abstract

Audio Engineering Society, Inc. Inc. Society, Engineering Audio

Published by by Published

measurements

Loudspeaker polar radiation radiation polar Loudspeaker

Sound source modeling - - modeling source Sound

AES standard on acoustics - - acoustics on standard AES

(Reaffirmed 2019) 2019) (Reaffirmed

AES56-2008

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aphy...... bliogr Bi C: Annex ...... 14

omt...... Format File ion Informat Text B.1 ...... 13

omt...... format formation In Text B: Annex .....13

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types...... file ng Drawi A: Annex ...... 12

o ...... ion format in Text 4.5 ...... 10

ion...... 9 format In Drawing 4.4

ling...... sca sponse re Impulse 4.3.4 ...... 9

size...... response Impulse 4.3.3 ...... 9

iles...... f sponse re Impulse 4.3.2 ...... 9

ion file set...... file ion radiat Polar 4.3.1 ...... 9

o ...... 9 ion esentat repr Data 4.3

ns...... ents easurem m B Type 4.2.3 .....7

ns...... ents easurem m A Type 4.2.2 .....7

...... 7 eneral G 4.2.1

tion...... resolu Spatial 4.2 ...... 7

ility...... repeatab Measurement 4.1.2 .....7

ance...... dist ent Measurem 4.1.1 ...... 6

tions...... condi Measurement 4.1 ...... 6

ast...... set ta da diation Ra Polar Loudspeaker 4 ...6

ain ...... iations abbrev nd a Definitions 3 ...... 5

nces...... refere Normative 2 ...... 4

cp ...... Scope 1 ...... 4

tion...... Introduc ...... 4

...... 3 08-19 2019- Addendum

...... 3 03-10 2009- Addendum

oeod...... Foreword ...... 3

Contents Contents

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permission use the verb “may”. Sentences expressing a possibility use the verb “can”. “can”. verb the use possibility a expressing Sentences “may”. verb the use permission

strong suggestions (recommendations). Sentences giving giving Sentences (recommendations). suggestions strong are “should” verb the containing Sentences document.

In AES standards documents, sentences containing the word “shall” are requirements for compliance with the the with compliance for requirements are “shall” word the containing sentences documents, standards AES In

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Note on normative language language normative on Note

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The annexes have been updated to conform to IEC format. format. IEC to conform to updated been have annexes The

Addendum 2019-08-19 2019-08-19 Addendum

The notes to clause 4.2.3.1, 4.2.3.2, and 4.2.3.3 have been updated to clarify various practical cases. cases. practical various clarify to updated been have 4.2.3.3 and 4.2.3.2, 4.2.3.1, clause to notes The

Addendum 2009-03-10 2009-03-10 Addendum

Richard Campbell, vice-chair vice-chair Campbell, Richard

Wolfgang Ahnert, chair chair Ahnert, Wolfgang

Campbell, J. Malek, R. Sauro, B. Dalenback, J. Woodgate, and M. Yonge. Yonge. M. and Woodgate, J. Dalenback, B. Sauro, R. Malek, J. Campbell,

Polar Radiation Measurements. The following members contributed: W. Ahnert, B. Olson, S. Feistel, R. R. Feistel, S. Olson, B. Ahnert, W. contributed: members following The Measurements. Radiation Polar

Source Modeling of the SC-04 Subcommittee on Acoustics Acoustics on Subcommittee SC-04 the of Modeling Source AES-X83, Loudspeaker Loudspeaker AES-X83, project of fulfillment in

This document was prepared by a writing group of the SC-04-01 Working Group on Acoustics and Sound Sound and Acoustics on Group Working SC-04-01 the of group writing a by prepared was document This

Loudspeaker polar radiation measurements. measurements. radiation polar Loudspeaker

AES standard on acoustics - Sound source modeling - - modeling source Sound - acoustics on standard AES AES56-2008, the of part not is foreword This

Foreword Foreword

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r the application of this document. document. this of application the r fo required are documents referenced No

(including any amendments) applies. applies. amendments) any (including

references, only the edition cited applies. For undated refe undated For applies. cited edition the only references, rences, the latest edition of the referenced document document referenced the of edition latest the rences,

are indispensable for the application of this document. For dated dated For document. this of application the for indispensable are documents referenced following The

2 Normative references references Normative 2

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predictions, and loudspeaker data sheets. sheets. data loudspeaker and predictions,

tion in room acoustic, electro-acoustic, and sound system system sound and electro-acoustic, acoustic, room in tion applica for suitable is data acquired This documented.

This standard specifies how the angular measurements of measurements angular the how specifies standard This loudspeaker polar radiation data shall be made and and made be shall data radiation polar loudspeaker

1 Scope Scope 1

precision. precision.

no longer seen as a significant obstacle to meaningful meaningful to obstacle significant a as seen longer no are files data larger increasing, are speeds computer

es. At the rate that storage capacity and desktop desktop and capacity storage that rate the At es. valu 1/3-octave processed than rather representations)

(or derived frequency domain domain frequency derived (or responses impulse of form e th in supplied be to data the allow systems measuring

ral resolution, these new new these resolution, ral spect the For five-degrees. t leas at of resolution spatial a with systems measuring

implemented, or are implementing, implementing, are or implemented, have manufacturers loudspeaker Most other. each with incompatible are

the polar radiation characteristics of loudspeakers that that loudspeakers of characteristics radiation polar the measuring for practices existing of variety a are There

Introduction Introduction

measurements

Loudspeaker polar radiation radiation polar Loudspeaker

Sound source modeling - - modeling source Sound

AES standard on acoustics - - acoustics on standard AES

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