PGG are pleased to advise that after making a minor adjustment to update Appendix 2 for BS EN ISO 389-7:2019 , you can access the new version of this document by clicking below. We would also like to inform you that PGG are currently working on a new, revised Practice Guidance – Acoustics Consideration for Audiology Clinics due for publication in 2025 which will supersede this document.OD104-79 BSA Practice Guidance Acoustics of Sound Field Audiometry March 2019_ appendix update 2024