SOUND INSULATING PERFORMANCE COMPARATIVELY EXPERIENCING DEVICE FOR FLOOR OR WALL MATERIAL

摘要

PROBLEM TO BE SOLVED: To select a material having sound insulating performance according to a desire and minimize the trouble after completion of a building by hammering a plurality of comparative test bodies under the same mechanical condition with a time difference, so that an experiencing person within an experience box can listen to the hammering sounds.;SOLUTION: An experience box 1 to which an experiencing person M enters is formed of a ceiling board 2, lateral side plates 3, 4 and a back plate 5, and an opening 6 is formed in the front. A stool part 7 for the experiencing person M to sit is provided in the inner part. A hammering device X is situated on the upper surface of the ceiling board 2, and cam pieces are fixed to positions differed in rotating angle by 180° on both ends of a rotating shaft rotated by a motor, respectively. Hammering members 17, 18 hammer comparative test bodies Y, Z by hammering arms corresponding to the cam pieces. The respective hammering members 17, 18 hammer the comparative test bodies Y, Z with a time difference by the rotating angle of 180° under the same mechanical condition, so that the experiencing person M within the experience box 1 can bodily sense the difference between the hammering sounds.;COPYRIGHT: (C)2000,JPO