SN EN 20354:1997现行

Gives a method of measuring the sound absorption coefficient of acoustical materials used as wall or ceiling treatments, or the equivalent sound absorption area of objects, such as furniture, persons or space absorbers, in a reverberation room. Not for measuring the absorption characteristics of weakly damped resonators. The results obtained can be used for comparison purposes and for design calculation with respect to room acoustics and noise control.

ONORM EN 20354:1993 - Identical

SS EN 20354:1994 - Identical

UNE EN 20354:1994 - Identical

UNI EN 20354:1993 - Identical

NF EN 20354:1993 - Identical

I.S. EN 20354:1994 - Identical

NBN EN 20354:1995 - Identical

DIN EN 20354 (1993-07) - Identical

BS EN 20354:1993 - Identical