Acoustics; determination of sound power radiated into a duct by fans; in-duct method (ISO 5136:1990 and Technical Corrigendum 1:1993); German version EN 25136:1993— 24 стр.
Acoustics - Determination of sound power radiated into a duct by fans and other air-moving devices - In-duct method (ISO 5136:2003); German version EN ISO 5136:2003— 75 стр.
Acoustics - Determination of sound power radiated into a duct by fans and other air-moving devices - In-duct method (ISO 5136:2003); German version EN ISO 5136:2003— 75 стр.
Acoutics - Measurement procedures for ducted silencers - Insertion loss, flow noise and total pressure loss (ISO 7235:1991); German version EN ISO 7235:1995— 26 стр.