| Document ID (ISN) | 28627 |
| CIS number |
78-95 |
| ISSN - Serial title |
Kampf dem Lärm |
| Year |
1977 |
| Convention or series no. |
|
| Author(s) |
Brinkmann K. |
| Title |
Calculation of the sound attenuation efficiency of hearing protectors |
| Original title |
Zur Berechnung der Schallpegelminderung beim Tragen eines Gehörschützers [in German] |
| Bibliographic information |
Feb. 1977, Vol.24, No.1, p.17-21. Illus. 9 ref. |
| Abstract |
Study of methods proposed to assess the efficacy of hearing protectors against a given noise: precise calculation on the basis of the octave spectrum; approximate method from 3 typical noise spectra; American method based on a single noise spectrum (average of 6 noises). The equivalence of 3 methods was tested with 45 industrial noise spectra and 25 hearing protectors. Statistical differences are shown. The approximate methods tend to over- or underestimate considerably the attenuation produced by hearing protectors, so that their information value is not equivalent to that of precise calculation. Application of a safety coefficient could compensate the lesser reliability of the approximate method. |
| Descriptors (primary) |
hearing protection; earmuffs; earplugs; sound attenuation |
| Descriptors (secondary) |
evaluation of equipment; comparative study; description of technique; mathematical analysis |
| Document type |
- |
| Subject(s) |
Noise, hearing and vibration
|
| Broad subject area(s) |
|
| Browse category(ies) |
Noise
Hearing protection
|
