54458

ISO/TR 4869-4:1998 [ Withdrawn ]

Acoustics - Hearing protectors - Part 4: Measurement of effective sound pressure levels for level-dependent sound-restoration ear-muffs

standard by International Organization for Standardization (Technical Report) , 10/01/1998

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Full Description

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 used 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.

 

Product Details

Published:
10/01/1998
Number of Pages:
7
File Size:
1 file , 58 KB
Same As:
ISO/TR 4869-4:1998
Note:
This product is unavailable in Ukraine, Russia, Belarus