![]() I have not been able to source it in the US. Thanks for mentioning that Basotect is 12400. Reflection calculation using a dipole source. I know that these concepts are important in application, but at this point I am only interested in the exercise of planning something broadband with good extension.Īlso, this is specific to these densities and materials as I want to use something like Caruso or Basotect, and stay away from Fiberglass or Mineral wool. Yes, I am ignoring all of the "what size room" and "where to place them" background. ![]() I am used to thinking about this like frequency response and want to see a flat line. Used with one of the 12" options it woud be good coverage. The second application of the TLM concerns the calculation of the external quantum efficiency of an organic photovoltaic with partially coherent rough. It has big dips so it doesn't look good by itself for broadband. Used separately, it covers 100hz well and. Shown as the red line, it is not as flat down to 200hz but has good extension. To calculate the reflection and transmission we apply a matrix method 3 which consists of successive appli- cation of two transfer operations (Fig. Thanks to for posting about the 50cm of 5000 as that looks like a really useful absorber. What is likely to be the measured performance difference? The advantage being it's simpler to use more of the same material. The main difference is around 400hz where the multi-material absorber is flatter, with the green line down about. It is not quite as smooth but extends a bit more. The green line is a 12" absorber which would be 300mm one material. FreeSnell is an application of the SCMScheme implementation and the WBB-tree database package. As you can see it is very smooth down to 200hz. The FreeSnell Thin-Film Optical Simulator FreeSnellis a program to compute optical properties of multilayer thin-film coatings. ![]() I decided to try and model this based on the idea that going from lightest-densest would have the least reflection. The blue line is a 12" absorber based on 3 layers of different material, 100mm each. I have run a few sims and found a few solutions that I like. ![]()
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