# ISO 389-7:2005/Amd 1:2016 — Withdrawn and superseded ISO standards For ISO 389-7:2005/Amd 1:2016, item title is Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions — Amendment 1: Reference threshold of hearing at 20 Hz and 18 000 Hz under free-field listening conditions and at 20 Hz under diffuse-field listening conditions; status code is 9599; successor is ISO 389-7:2019; withdrawn / published date is 2016-07-12, recorded from its source on 2026-08-05. - **Identifier:** ISO 389-7:2005/Amd 1:2016 _(verified: appears in the quote below)_ - **Item title:** Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions — Amendment 1: Reference threshold of hearing at 20 Hz and 18 000 Hz under free-field listening conditions and at 20 Hz under diffuse-field listening conditions _(verified: appears in the quote below)_ - **Status code:** 9599 - **Successor:** ISO 389-7:2019 - **Withdrawn / published date:** 2016-07-12 ## What the source says > 67239,IS,Amd,ISO 389-7:2005/Amd 1:2016,Acoustics — Reference zero for the calibration of audiometric equipment — Part 7: Reference threshold of hearing under free-field and diffuse-field listening conditions — Amendment 1: Reference threshold of hearing at 20 Hz and 18 000 Hz under free-field listening conditions and at 20 Hz under diffuse-field listening conditions,Acoustique — Zéro de référence pour l'étalonnage d'équipements audiométriques — Partie 7: Niveau liminaire de référence dans des conditions d'écoute en champ libre et en champ diffus — Amendement 1: Seuil d’audition de référence à 20 Hz et 18 000 Hz dans des conditions d’écoute en champ libre et à 20 Hz dans des conditions d’écou ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).