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Reference EN 61094-8:2012
Title Measurement microphones — Part 8: Methods for determining the free-field sensitivity of working standard microphones by comparison
Project Number 23860
Abstract/Scope IEC 61094-8:2012 applicable to working standard microphones meeting the requirements of IEC 61094-4. It describes methods of determining the free-field sensitivity by comparison with a laboratory standard microphone or working standard microphone (where applicable) that has been calibrated according to either; IEC 61094-3; IEC 61094-2; IEC 61094-5; IEC 61094-6; or this part of IEC 61094. Methods performed in an acoustical environment that is a good approximation to an ideal free-field (e.g. a high quality free-field chamber), and methods that use post processing of results to minimise the effect of imperfections in the acoustical environment, to simulate free-field conditions, are both covered by this part of IEC 61094. Comparison methods based on the principles described in IEC 61094-3 are also possible but beyond the scope of this part of IEC 61094.


Current Stage code 6060
Current Stage code date 2012-11-30
Current Stage code deadline 2013-07-24
Deadline date for vote  


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IEC Technical Body IEC/TC 29
Reference Document IEC 61094-8:2012 (EQV)
ICS 17.140.50 - Electroacoustics
Keywords Microphone; Measurement; Free-field; Calibration
Note 2012-10-09: Publication editing allocated to
Special National Condition(s)  


Categories - Aspects
Product Life Cycle


Deadline Date
6060 2012-11-30 2013-07-24 export to doc file  EN  FR  DE
5099 2012-10-24 2012-11-21  
5060 2012-04-20 2012-05-29 export to doc file  EN
5020 2011-11-11 2012-04-13  
1090 2011-11-08 2011-11-11  

Implementation Dates

date of Ratification (DOR) (1) 2012-10-24
date of Availability (DAV) (2) 2012-11-30
date of Announcement (DOA) (3) 2013-01-24
date of Publication (DOP) (4) 2013-07-24
date of Withdrawal (DOW) (5) 2015-10-24


Superseded by  
Normative reference (6) ISO/IEC Guide 98-3
ISO 26101
EN 61094-1
EN 61094-2
EN 61094-3
EN 61094-4
EN 61094-5
EN 61094-6
IEC/TS 61094-7

(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.