Sound absorption coefficients for tuff and pumice?

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Sephra Scheuber

Here are some links that might help you:

http://www.acoustic.ua/st/web_absorption_data_eng.pdf

http://usenclosure.com/Diffraction%20Graphs/Tables%20and%20calcs%20for%20Sound%20Absorption%20coefficient.pdf

http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.844.8685&rep=rep1&type=pdf

http://www.owa.de/docs/pdf/DS_358_E_OWAtecta_sound_absorption_051102.pdf

Adam Pilch

Thank You. Only in http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.844.8685&rep=rep1&type=pdf there is something about pumice, but only as a combination with another material, so I cannot use it.

Stuart Cunningham

Hi Adam,

What do you need the coefficient for (are you calculating an RT60, for example)? Perhaps you could approximate it?

I am modelling Forum Romanum from some ancient period, where temple's walls were covered with tuff. I do not have any RT60 measurements... There are some measurement of rooms with tuff, but it is not the only material in room, so approximation would be very rough

Cak Narto

Mulawarman University with Gajah Mada University is researching natural sound absorbing materials, including pumice, river stone, banggeris wood, Bengkirai wood, coal powder, if you are patient in the next few years, we can help answer your questions. thank you