Lexicon | Soniflex

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Wave length

Wave length λ describes the spatial distance between two subsequent identical phase states of a wave.

Bundes-Immissionsschutzgesetz (BImSchG)

Germany’s Federal Immission Control Act (BImSchG) came into force on April 1, 1974, and is aimed at protecting people, animals, plants and material goods from the harmful effects of environmental pollution by restricting the generation of all kinds of immissions.

Noise

Noise is an undesired sound event perceived as a disturbance or nuisance. Noise can be detrimental to health. Noise in this sense cannot be objectively measured, but depends on the subjective perception of the person exposed to the sound event.

Sound insulation

Sound insulation is the acoustic shielding of a room or device in order to prevent or reduce the transmission of air-borne or solid-borne sound to neighboring spaces. The aim is to prevent the sound from propagating by using sound insulation materials to build a sound barrier around the noise source.

Closed-cell foams

In closed-cell foams, the walls between the individual cells are completely closed. As this prevents the penetration of liquids and vapor etc., closed-cell foams are suitable for use also in spaces with increased moisture load.

Noise control

Equipping the room with noise control materials reduces the sound level (and hence the perceived noisiness) and improves speech intelligibility. Such an improvement of acoustic conditions makes for a much more pleasant atmosphere. Porous and fibrous materials such as open-cell foams or non-wovens are excellent sound absorbers. But also closed-cell foams with a special cell structure, for instance our soni RESIST, score with good sound absorption capacity.