Question on Material Database

[Kanafani80]

Hi! Thanks again for this great repo.

I have a question on the material database:
https://pyroomacoustics.readthedocs.io/en/stable/pyroomacoustics.materials.database.html

I am wondering if there is a reference for these numbers? I could not see one listed. Where do they come from? I am interested in both validating them and seeing if there are more materials or info in the reference.

Thank you!

[fakufaku]

Sorry for the late reply. The table was taken from the appendix of the following book.

Michael Vorlaender, Auralization: Fundamentals of Acoustics, Modelling,
Simulation, Algorithms, and Acoustic Virtual Reality, Springer, 1st Edition,
2008.

[Kanafani80]

Thanks!!