Download ISO/TR 4869-4:1998, Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs pdf epub
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Iso/tr 4869-4:1998, Acoustics - Hearing Protectors - Part 4: Measurement Of Effective Sound Pressure Levels For Level-Dependent Sound-Restoration Ear-Muffs

This Technical Report specifies a physical test method for level-dependent sound-restoration ear-muffs. The physical measurements are made with the acoustic test fixture (ATF) according to ISO/TR 4869-3 or with a suitable head and torso simulator (HATS) with a suitable acoustic isolation (see clause 7). The results of these tests in combination with the results from the ISO 4869-1 tests can be use...

Paperback: 24 pages
Publisher: Multiple. Distributed through American National Standards Institute (ANSI) (August 23, 2007)
Language: English
ASIN: B000XYT7NY
Product Dimensions: 8.2 x 0.1 x 10.5 inches
Format: PDF ePub djvu book

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  • 8.2 x 0.1 x 10.5 inches pdf
  • ISO TC 43/SC 1/WG 17 epub
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to estimate the effective A-weighted sound pressure level when sound restoration ear-muffs are worn.The method described is not suitable for measurement of the effective sound pressure level under ear-muffs in the case of impulsive noise nor for active noise reduction ear-muffs. This title may contain less than 24 pages of technical content.