International Standards and Conformity Assessment for all electrical, electronic and related technologies



Reference EN 62585:2012
Title Electroacoustics - Methods to determine corrections to obtain the free-field response of a sound level meter
Project Number 23109
Abstract/Scope IEC 62585:2012 provides information on the corrections required over a range of frequencies in order for a periodic test of a sound level meter to be performed according to IEC 61672-3. These corrections include; corrections for the typical effects of reflections from the case of the sound level meter and diffraction of sound around the microphone; corrections for the deviation of the typical microphone frequency response from a uniform frequency response, where the actual microphone response cannot be measured; and corrections for the influence on the frequency response of a typical microphone of a specified windscreen and any other accessory that is part of the configuration for normal use of the particular sound level meter submitted for testing. This International Standard includes discussion about uncertainties of measurement of the required corrections. In some instances a maximum permitted expanded uncertainty for the manufacturer or testing laboratory is given. The aim of this International Standard is to ensure that the adjustment value at the calibration check frequency and all corrections are determined using consistent and appropriate methods. It is intended that this International Standard will be used by manufacturers to determine adjustment values and corrections, by laboratories performing pattern evaluation tests according to IEC 61672-2, and by laboratories performing periodic tests according to IEC 61672-3. Laboratories performing periodic tests according to IEC 61672-3 will also need to consult this International Standard to ensure that the expanded uncertainties of measurement for the corrections quoted by the manufacturer do not exceed the maximum permitted values.


Current Stage code 6060
Current Stage code date 2012-10-05
Current Stage code deadline 2013-05-29
Deadline date for vote  


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IEC Technical Body IEC/TC 29
Reference Document IEC 62585:2012 (EQV)
ICS 17.140.50 - Electroacoustics
Keywords Electroacoustics; Correction; Free-field response; Sound level; Meter
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2012-10-05 2013-05-29 export to doc file  EN  FR  DE
6060 2012-09-28 2013-05-29 export to doc file  EN  FR  DE
5099 2012-08-29 2012-09-26  
5099 2012-08-29 2012-09-26  
5060 2012-07-16 2012-08-06 export to doc file  EN
5020 2012-05-11 2012-07-13  
3090 2011-02-11 2011-12-31  
5060 2011-02-07 2011-02-28 export to doc file  EN
5020 2010-09-03 2011-02-04  
1090 2010-08-31 2010-09-03  

Implementation Dates

date of Ratification (DOR) (1) 2012-08-29
date of Availability (DAV) (2) 2012-10-05
date of Announcement (DOA) (3) 2012-11-29
date of Publication (DOP) (4) 2013-05-29
date of Withdrawal (DOW) (5) 2015-08-29


Superseded by  
Normative reference (6) ISO/IEC Guide 98-3:2008
ISO/IEC Guide 99:2007
EN 60942:2003
EN 61094-1:2000
EN 61094-5:2001
EN 61094-6:2005
IEC/TS 61094-7:2006
EN 61183:1994
EN 61672-1:2003
EN 61672-2:2003
EN 61672-3:2006

(1) Date of ratification (dor) date when the Technical Board notes the approval of an EN (and HD for CENELEC), from which time the standard may be said to be approved

(2) Date of availability (dav) date when the definitive text in the official language versions of an approved CEN/CENELEC publication is distributed by the Central Secretariat

(3) Date of announcement (doa) latest date by which the existence of an EN (and HD for CENELEC), a TS or a CWA has to be announced at national level

(4) Date of publication (dop) latest date by which an EN has to be implemented at national level by publication of an identical national standard or by endorsement

(5) Date of withdrawal (dow) latest date by which national standards conflicting with an EN (and HD for CENELEC) have to be withdrawn

(6) This list of normative references is purely indicative. The only official list of normative reference is the list of the published standard.