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EN ISO 4869-3:2007

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Acoustics - Hearing protectors - Part 3: Measurement of insertion loss of ear-muff type protectors using an acoustic test fixture (ISO 4869-3:2007)
Published date

07-01-2007

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Measurement principle
5 Measurement of the insertion loss of ear-muffs
6 Reporting of data
Annex A (informative) Use of the acoustic test fixture as a
                        directional microphone
Annex B (informative) Uncertainty of insertion loss measurements
ANNEX ZA (informative) Relationship between this International
                        Standard and the Essential Requirements
                        of EU Directive 89/686

ISO 4869-3:2007 specifies a method for measuring the insertion loss of ear-muff type hearing protectors using an acoustic test fixture. The method is applicable to the investigation of production spreads of performance as part of type approval or certification procedures, and to the investigation of the change of performance with age. It is intended to ensure that ear-muff hearing protector samples submitted for subjective testing of attenuation according to ISO 4869-1 have performances typical of the type.The method specified in ISO 4869-3:2007 is not applicable as the basic test for type approval. Performance data obtained by this method are not intended to be quoted as representing the real-ear sound attenuation of an ear-muff, nor the protection provided by the ear-muff.

Committee
CEN/TC 211
DevelopmentNote
Supersedes EN 24869-3. (08/2007)
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current
Supersedes

PREN 13819-2 : DRAFT 2018 HEARING PROTECTORS - TESTING - PART 2: ACOUSTIC TEST
BS EN 60268-7:2011 Sound system equipment Headphones and earphones
18/30367667 DC : 0 BS EN 13819-2 - HEARING PROTECTORS - TESTING - PART 2: ACOUSTIC TEST METHODS
EN 60268-7:2011 Sound system equipment - Part 7: Headphones and earphones
CEI EN 60268-7 : 2012 SOUND SYSTEM EQUIPMENT - PART 7: HEADPHONES AND EARPHONES
16/30348450 DC : 0 BS EN 13819-3 - HEARING PROTECTORS - TESTING - PART 3: SUPPLEMENTARY ACOUSTIC TEST METHOD
I.S. EN 60268-7:2011 SOUND SYSTEM EQUIPMENT - PART 7: HEADPHONES AND EARPHONES

ISO/IEC Guide 98:1993 Guide to the expression of uncertainty in measurement (GUM)
IEC 61094-4:1995 Measurement microphones - Part 4: Specifications for working standard microphones
ISO 4869-1:1990 Acoustics Hearing protectors Part 1: Subjective method for the measurement of sound attenuation
IEC 60263:1982 Scales and sizes for plotting frequency characteristics and polar diagrams
ISO 48:2010 Rubber, vulcanized or thermoplastic Determination of hardness (hardness between 10 IRHD and 100 IRHD)
IEC 61260:1995 Electroacoustics - Octave-band and fractional-octave-band filters

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