SIS SS 02 52 66-1989 声学．门，窗和其他外观因素的隔音．IS0140/5所描述的扬声器方法补充，实地测量
Acoustics — Sound insulation of windows, doors and other facade elements — Supplement to the loudspeaker method described in IS0140/5, Field measurement
The standard specifies a field measurement method of sound insulation of windows, doors and other facade elements when the sound source is a loudspeaker. The method is a supplement to the loudspeaker method described in ISO 140/5.