| 수록사항 |
건축(대한건축학회지) , v.29 n.124(1985-05) |
| 요약1 |
본 연구에서는 S.I.법중 근접한 2점에서 음압신호간의 상호스펙트럼 빈도함수(Gross-Spectral Density Function:C.S.D.F.)에 의한 허수부의 연산을 이용해서 음의 강도방볍에 의하여 현장에서의 출입문의 차음성능측정 및 측정결과의 고찰을 하고자 한다. |
| 요약2 |
The Cross Spectral Method is one of Sund Intensity Methods. This new method has two advantages.First, this method makes it possible to measure the field transmission loss more accurately than the conventional field test dies. Second, this method makes it possible to measure the field transmission Ioss at low frequencies more accurately than the Direct Mothod(among Sound Intensity Methods)does. This Study shows that the new methid is applied to the measurement of field transmission loss through doors at high back ground noises. The measured values of the Cross-spectral method are simission loss thriugh doors at high back ground noises. The measured values of the Cross-spectral method are similar to those of two room transmission suite method. On the other hand, there is a large difference between the measured values of the two room transmission suite method and thdse of the conventional field test method. |
