The input data useful for the implementation of an absorbing lining in a test room are primarily the use of the room (for acoustic measurement rooms: normative requirements are associated with anechoic or semi-anechoic rooms), the envisaged type of metrology and the frequency band of interest, the nature of the objects under test (size spectrum), the physical setting (area of available surfaces, acceptability of overweight for supports for the walls or for the roof and when applicable for the floor). In very many cases, the reaction to fire of considered materials is also taken into account as well as considerations of appearance (architectural aspect, colors, materials ...).

In case of achievement in the automotive industry, or for other industrial applications related to the industries of transportation or of energy (aero-acoustic wind tunnels), specific constraints related to resistance to impacts or to weather damages may necessitate the use of particular absorbing linings (with waterproof, washable cover) or the use of stainless steels.

Other parameters may be involved such as the authorized mass, the required longevity or the available budget as well as (sometimes) thickness of the lining.