1 关于TL的计算理论,你查看OLH里面的Theory for Panel Transmission Loss部分。用关键字搜索一下就好了。
Theory for Panel Transmission Loss
When sound is incident upon a structure, some of the sound waves get reflected and some of them get transmitted through the structure. The ratio of acoustic power incident on the structure to the acoustic power transmitted by the structure is known as Transmission Loss, which is also a measure of its sound insulation. It is expressed in decibels.
A Panel Transmission Loss experimental set-up consists of a source room and a receiving room which are coupled through a structural panel that is to be studied, placed in a rigid wall. The following figure illustrates a test facility.