ISO 389-2:1994 PDF
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Acoustics — Reference zero for the calibration of audiometric equipment — Part 2: Reference equivalent threshold sound pressure levels for pure tones and insert earphones
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.
| Edition | 1994 |
|---|---|
| Standard Part No | 2 |
| Published Date | 1994 |
| Published By | International Standardization Organisation |
| Page Count | 7 |
