They should not be used for these purposes.

But the canvas, of course, has the greatest impact on the capabilities of the door to absorb. It must be sheathed if you want to achieve tangible results. The recipe is simple — the thicker it is, the less sounds will pass through it. Use several layers of materials — for example, dermantine, mineral wool, chipboard, and so on. Foamen, despite the widespread opinion, the sound does not absorb very well. Just like polystyrene and cork. They should not be used for these purposes. Special films that are glued to the door are not very effective and it seems to be protected from noise, but in fact they do nothing.