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sklademVydáno: 1995-03-15
BS EN ISO 389-2:1997
Acoustics. Reference zero for the calibration of audiometric equipment Reference equivalent threshold sound pressure levels for pure tones and insert earphones
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| Označení normy: | BS EN ISO 389-2:1997 |
| Počet stran: | 14 |
| Vydáno: | 1995-03-15 |
| ISBN: | 0 580 23597 1 |
| Status: | Standard |
DESCRIPTION
BS EN ISO 389-2:1997
This standard BS EN ISO 389-2:1997 Acoustics. Reference zero for the calibration of audiometric equipment is classified in these ICS categories:
- 11.040.01 Medical equipment in general
- 13.140 Noise with respect to human beings
This part of ISO 389 specifies reference equivalent threshold sound pressure levels (RETSPL) for the calibration of pure-tone audiometers supplementary to those specified in ISO 389:19911). Values given in this part of ISO 389 are applicable to insert earphones of a pattern specified in clause 4.
NOTE 1 For information, a note on the derivation of the reference values and the origin of the data input is given in annex A, and a bibliography is given in annex B.