Acoustic shielding device for damping of disturbing traffic noise

Abstract

The invention relates to an acoustic screening device (1) for damping disturbing noise, especially such noise which arises from road traffic, rail traffic and the like, comprising a framework (2), preferably of concrete, and a noise absorber (3) arranged thereon, preferably fitted flat against the framework (2), and in which the noise absorber is configured as an exchangeable cassette (3) comprising a noise-absorbing mat (13). The invention is achieved by virtue of the fact that an air gap former (14) is arranged integrated in the cassette (3) behind the noise-absorbing mat (13) in such a way that an air gap (15) is formed between the noise-absorbing mat (13) and the framework (2), that the air gap former (14) is arranged to form a number of cells (16) or compartments between the noise-absorbing mat (13) and the framework (2), the cells (16) or the compartments being arranged to form substantially closed air volumes, and that the noise-absorbing mat (13) is arranged to be, at least to some degree, noise and air permeable.

Dependencies are inferred from the claim text.