Were there any notable results here?

I think that this special issue also reflects recent activities in that direction to characterize sound diffusers.

So namely diffusion and sound diffusion and scattering, there have been a lot of work in the past to One of the leading team is really Peter D'Antonio with Professor Trevor Cox.

And they use large fixture in the laboratory, so-called acoustic goniometer.

And those measurements are quite amazing in the past to characterize the sound diffusers, namely all the angular dependent scattered sound field can be captured by those measurements.

In this special issue, there was also very promising work just starting namely using also kind of microphone arrays, but not that the circular was very cool, you know, enclosing the material and the test, rather than near the scattered surface.

And Brandt and his co-authors endeavored to do the scanning using microphone.

And so it very, very quickly improves the development time of a given project.