Ergonomics - Accessible design - Sound pressure levels of spoken announcements for products and public address systems (ISO 24504:2014); German version EN ISO 24504:2016— 32 стр.
Ergonomics - Accessible design - Sound pressure levels of spoken announcements for products and public address systems (ISO 24504:2014); German and English version FprEN ISO 24504:2015— 32 стр.
Sound system equipment - Part 16: Objective rating of speech intelligibility by speech transmission index (IEC 60268-16:2011); German version EN 60268-16:2011— 74 стр.