Obamot wrote:Arf ... Explain us a bit, how to get to 60 dBA while wood fibers reach to break everything 40 dBA: and products derived from wood, such as cotton wadding cellulose. According to Lauber Mass law:
You do not even get 60 dBA with concrete !!! Point bar.
Always have to take manufacturers' catalogs and take their values in unweighted dB - and believe them - and that's what we get!
Obamot Hi!
Looks like you're trying to fill the void left by Dédé!
We have already discussed sono together and it seems to me that you will have to be able to distinguish between a single material and several materials coupled together, in our constructions is several structural layer that absorbs at different frequencies in addition to spaces of air and finally inside with the gypsum that absorbs well the low frequencies while the other materials better aborb the high and medium frequencies if we add the brick or the stone outside ben sorry to disappoint you but there No big sound that passes through !!!
Please do not restart me as you usually do because as usual I would not answer to not create more off topic considering that there is now much too!
For good dogs it adapts to the cold like many other animals, their hair grows and they moult in the spring!
We are raising well outside Lamas and ostriches in Quebec !!!