全帯域レベル値L_cとL_Aとを用いた床衝撃音の解析と評価

概要

論文の詳細を見る
Acoustical properties of impact sound generated by the standard tapping machine can simply be characterized by two factors the maximum band level and the center frequency concerned with it, since the spectra of impact sound obtained in various cases of floor structures are very similar to each other. A method based on this principle for analyzing and evaluating the impact sound insulation of floors is studied theoretically. It is found that the pair of the values of L_C and L_A which can be measured with a sound level meter is also applicable for analyzing the acoustical factors above mentioned. A graphic method where a certain pair of values of L_C and L_A locates a point is convenient for evaluating the results obtained in field measurements and assessing the impact sound insulation of floors. Assuming the standardized spectrum pattern of impact sound, it is possible to draw the contour lines for rating on this diagram according to any existing standard which needs the frequency analysis of impact sound generated by the standard source.
社団法人日本音響学会の論文
1980-02-01