BS 3638:1987被替代

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.BS AMD 7781 RENUMBERS THIS STANDARD TO BS EN 20354

© British Standards Institution 2013

Superseded and renumbered by BS EN 20354
(07/2004)

ISO 354:2003 - Identical