ISO 389-8:2004
Acoustics — Reference zero for the calibration of audiometric equipment — Part 8: Reference equivalent threshold sound pressure levels for pure tones and circumaural earphones
OVERVIEW
ISO 389-8:2004 specifies reference equivalent threshold sound pressure levels (RETSPLs) for pure tones in the frequency range from 125 Hz to 8 kHz, applicable to the calibration of air conduction audiometers equipped with a particular model of circumaural earphones (SENNHEISER HDA 200).
Some notes and references on the derivation and the test conditions used to determine the recommended reference levels are given in Annex A and the Bibliography.
The sound attenuation of the earphone is given in Annex B. For speech audiometers of types A-E and B-E, the correction figures of the earphone for a free-field equivalent output are given in Annex C.
COMMENTS
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PRODUCT DETAILS
| Status | Current |
|---|---|
| Edition | 2004 |
| No. of Pages | 7 |
| ICS Classification | 13.140 Noise with respect to human beings |
| Committee | ISO/TC 43 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |