# ISO 26101:2017 — Withdrawn and superseded ISO standards

For ISO 26101:2017, item title is Acoustics — Test methods for the qualification of free-field environments; status code is 9599; successor is ISO 26101-1:2021; withdrawn / published date is 2017-04-25, recorded from its source on 2026-08-05.

- **Identifier:** ISO 26101:2017 _(verified: appears in the quote below)_
- **Item title:** Acoustics — Test methods for the qualification of free-field environments _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 26101-1:2021
- **Withdrawn / published date:** 2017-04-25 _(verified: appears in the quote below)_

## What the source says

> 69870,IS,,ISO 26101:2017,Acoustics — Test methods for the qualification of free-field environments,Acoustique — Méthodes d'essai pour la qualification des environnements en champ libre,2017-04-25,2,['17.140.01'],ISO/TC 43/SC 1,9599,"[43384,67240]",[80877],['en'],22,"<p>ISO 26101:2017 specifies methodology for qualifying acoustic spaces as anechoic and hemi-anechoic spaces meeting the requirements of a free sound field.</p><p>ISO 26101:2017 specifies discrete-frequency and broad-band test methods for quantifying the performance of anechoic and hemi-anechoic spaces, defines the qualification procedure for an omni-directional sound source suitable for free-field qualification, gives details of

## 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Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).