Airborne noise is noise radiated from structures and/or machines. When a machine or a structure is encased or insulated, the sound level in this space increases considerably. The absorption of these sound sources will be discussed in the chapter ‘Absorption of airborne noise’. . Structure parts that are caused to vibrate by airborne noise will in turn radiate noise and pass it on to other structure parts. That is why it is important to insulate these parts from airborne noise.
In general, the more mass a structure part has, the harder it is for airborne noise to make it vibrate. Phonisol makes structure parts heavier, to prevent them being made to vibrate by airborne noise. It is also possible to make a casing around structure parts or around complete structures.
Product range for the insulation of airborne noise:
Phonisol
Casings