Objavljen
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.
OBJAVLJEN
ISO 389-2:1994
90.93
Odluka o potvrđivanju standarda
9. 10. 2025.
NAPUŠTEN
ISO/PWI 389-2
Akustika – Referentna nula za kalibriraciju audiometrijske opreme – Deo 2: Referentni ekvivalentni prag nivoa zvučnog pritiska za čiste tonove i umetnute slušalice
90.92 Odluka o izmeni ili reviziji standarda