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 | Status: Current, Under review

1 Scope 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.