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I.S. EN ISO 4869-3:2007

Current
Current

The latest, up-to-date edition.

ACOUSTICS - HEARING PROTECTORS - PART 3: MEASUREMENT OF INSERTION LOSS OF EAR-MUFF TYPE PROTECTORS USING AN ACOUSTIC TEST FIXTURE
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

01-01-2007

Preview

For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.

Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

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

Defines a method for measuring the insertion loss of ear-muff type hearing protectors using an acoustic test fixture.

DevelopmentNote
Supersedes I.S. EN 24869-3. (08/2007)
DocumentType
Standard
Pages
22
PublisherName
National Standards Authority of Ireland
Status
Current
Supersedes

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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