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Status : Active
Standard Type : Main
Document No : ISO 389-8:2004
Document Year : 2004
Pages : 7
Edition : 1
Section Volume : Acoustics (ISO/TC 43.)
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.