| Document ID (ISN) | 102688 |
| CIS number |
03-1877 |
| Year |
2004 |
| Convention or series no. |
NTP 638
|
| Author(s) |
Luna Mendaza P., Guasch Farrás J. |
| Title |
Estimation of the effective attenuation of hearing protectors |
| Original title |
Estimación de la atenuación efectiva de los protectores auditivos [in Spanish] |
| Bibliographic information |
Instituto Nacional de Seguridad e Higiene en el Trabajo, Ediciones y Publicaciones, c/Torrelaguna 73, 28027 Madrid, Spain, 2004. 5p. Illus. 2 ref. |
| Internet access |
http://internet.mtas.es/Insht/ntp/ntp_638.htm [in Spanish]
|
| Abstract |
Hearing protectors need to comply with certain requirements concerning noise attenuation. Noise attenuation is constant for each octave band, but the overall attenuation differs according to the noise frequency spectra. This information note describes the methods used for calculating the various noise attenuation indices that allow the determination of the effective residual noise load at the ear. Contents: definition of the various noise level attenuation parameters; octave band method; H, M and L method; SNR (Single Number Rating) method; example simulating the exposure of a worker as a function of time and use of hearing protectors. |
| Descriptors (primary) |
hearing protection; sound attenuation; Spain |
| Descriptors (secondary) |
data sheet; noise level |
| Document type |
F - Information notes, codes of practice, standards |
| Country / State or Province | Spain |
| Subject(s) |
Noise, hearing and vibration
|
| Broad subject area(s) |
Physical hazards
|
| Browse category(ies) |
Noise
Hearing protection
|
