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NBN EN ISO 389-2:1996
Acoustics - Reference zero for the calibration of audiometric equipment - Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones (ISO 389-2:1994)
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Summary
Specifies levels supplementary to those specified in ISO 389:1991 (to be re-issued as ISO 389-1). Values given are applicable to insert earphones of type Etymotic Research ER-3A, coupled to the human ear by ear inserts of type ER-3-14.
Technical characteristics
| Publisher | Bureau de Normalisation Belge (NBN) |
| Publication Date | 10/25/1996 |
| Cancellation Date | 02/28/1997 |
| Page Count | 18 |
| EAN | --- |
| ISBN | --- |
| Weight (in grams) | --- |
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