Full Specification Given Below:
| Standard | BS EN ISO 389-4:1999 |
| Title Identifier | Acoustics. Reference zero for the calibration of audiometric equipment. Reference levels for narrow-band masking noise |
| Status | CU |
| Publication Date | 15/03/95 |
| Committee | EH/1 |
| Approximate Price | £64.00 |
| Notes | |
| ISBN | 0 580 23599 8 |
| Pages | 16 |
| International Equivalent | EN ISO 389-4:1998 ISO 389-4:1994 |
| Descriptors | Audiometry, Acoustic measurement, Bandwidths, Frequencies, Audiofrequencies, Hearing (auditory perception), Auditory threshold, Acoustic signals, Audibility |
| Cross references | IEC 711, ISO 389-3, IEC 645-1 EN ISO 389:1995, EN ISO 389-2:1996, ISO 389:1991, ISO 389-2:1994, IEC 126, IEC 303, IEC 318, IEC 711 |
| Replaces | BS 7113:1989 |
| Replaces Notes | |
| Replaced By | |
| Replaced by Notes |
