Name:
ISO 389-4:1994 PDF
Published Date:
10/01/1994
Status:
Active
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.
| File Size : | 1 file , 410 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 4 |
| Published : | 10/01/1994 |
| Same As : | ISO 389-4:1994 |
