ISO 389-4:1994
$13.00
Acoustique — Zéro de référence pour l’étalonnage d’équipements audiométriques — Partie 4: Niveaux de référence pour bruit de masque en bande étroite
| Published By | Publication Date | Number of Pages |
| ISO | 1994-10 | 12 |
Specifies reference levels for narrow-band masking noise presented by air conduction from an earphone in pure-tone audiometry. The data are given in terms of levels to be added to the reference equivalent threshold sound pressure levels for the corresponding pure-tone frequencies. Data are given for noise bandwidths of one-third and one-half octaves.
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