算術平均에 의한 바닥衝擊音 遮音性能 評價에 관한 硏究 = The Study on the Rating of Impact Sound Insulation Performance by Arithmetic Mean Values

다국어 초록 (Multilingual Abstract)

It is known that arithmetic mean values of impact sound have an unexpectedly high correlation with the loudness of the sound. This measure is simple and much more easily obtained than the measures specified in tile existing standards. This finding was obtained by psycho-acoustic experiments, however, not by field experiments.
This paper aims to specify the relationship between this measure and existing measure, L value by JIS A 1419, and to review the proper range of frequencies to be considered by using 63 data of actual impact sounds for domestic floors.
As a result, arithmetic mean values of sound levels showed good correlation with L values. And mean values in octave bands from 125 to 2㎑ were proper for light weight impact sound and those from 125 to 2kH were proper for heavy weight impact sound. In addition it was found that L values(by JIS A 1419) estimated from same floor could be underestimated compared to arithmetic values.

목차 (Table of Contents)

• I. 서 론
• II. 바닥충격음 평가지표로서의 산술평균법에 관한 고찰
• III. 대상바닥구조의 차음성능 특성
• 1. 대상 구조의 충격음 스펙트럼
• 2. 대상바닥구조의 차음성능 분포
• IV. 산술평균지수와 L수와의 상관성 분포
• V. 결 론