Abstract
The attenuation of hearing protectors is determined according to
standardised procedures which all utilise the Real Ear Attenuation
at Threshold (REAT) method. This method imply the determination of
test subjects hearing threshold both with and without wearing the
hearing protector. Essentially the same procedure is used in
Europe, USA, Australia and New Zealand, but the methods differ in
the way the sound field is established and in the way the test
subjects are instructed before the tests. Presently the
international standard ISO 4869-1 for hearing protector
attenuation is under revision. This is also the case for the
corresponding standard in Australia (AS 1270) and recently a new
American standard (S 12.6-1997) has been introduced.Results from
recent investigations (March 1998) will be presented and
discussed. The investigations comprise attenuation determinations
in various sound fields and attenuation measurements made in
accordance with both the ISO standard and the new American
standard.
| Original language | English |
|---|---|
| Title of host publication | InterNoise 98 proceedings |
| Publication date | 1998 |
| Publication status | Published - 1998 |
| Event | 27th International Congress and Exhibition on Noise Control Engineering - Christchurch, New Zealand Duration: 16 Nov 1998 → 18 Nov 1998 Conference number: 27 |
Conference
| Conference | 27th International Congress and Exhibition on Noise Control Engineering |
|---|---|
| Number | 27 |
| Country/Territory | New Zealand |
| City | Christchurch |
| Period | 16/11/1998 → 18/11/1998 |