Sound measurements

In this section a selection of measurement data has been collected.
First a range of material specifications of absorption measurement, a few examples of dynamic stiffness and last some examples of marine built up simulating various fi re protection division bulkhead/ deck constructions where the reduction value has been measured.

It is necessary to stress that whenever data is to be compared, this cannot be done, without also knowing according to which standards the measurements have been done, which laboratory and not least under which circumstances (environmental conditions). Apples has to be compared to apples and oranges to oranges, so to speak. It can lead to quite bad misunderstandings, if raw dB or absorption values are uncritically used.