| Document ID (ISN) | 30300 |
| CIS number |
78-1886 |
| Year |
1978 |
| Convention or series no. |
|
| Author(s) |
Whittle L.S., Sutton G.J., Robinson D.W. |
| Title |
The objective measurement of the attenuation of hearing protectors of the circumaural type. |
| Bibliographic information |
NPL Acoustics Report Ac 87, National Physical Laboratory, Teddington, Middlesex TW11 OLW, United Kingdom, July 1978. 28p. Illus. 12 ref. |
| Abstract |
The attenuation of 5 earmuffs using dummy heads of 3 different designs was measured. Results showed variability on repeated attachment of the earmuffs, and an effect of geometrical factors in the design of the dummy heads. Compared with the results of subjective tests the attenuation measured on the dummy heads was consistently the greater, but there was a good correlation between the 2 methods up to 2kHz. Conclusion: results in good agreement with subjective values may become predictable from objective measurements in simple test conditions. |
| Descriptors (primary) |
hearing protection; earmuffs; sound attenuation |
| Descriptors (secondary) |
subjective assessment; evaluation of equipment; comparative study; report; tests on models; USA |
| Document type |
E - Books, reports, proceedings |
| Subject(s) |
Noise, hearing and vibration
|
| Broad subject area(s) |
|
| Browse category(ies) |
Noise
Hearing protection
|
