This acoustic chamber is built in such a way to minimise the level of acoustic background and acoustic waves reflected from the walls and limit the external noise. Sounds from the outside are strongly suppressed due to the walls’ acoustic insulation and the materials used. Internal surfaces are covered in material with strong sound-absorbing properties; the chamber is lined with “porfles” tiles. Lighting and electricity, together with a table allowing set up of the measuring apparatus are located inside the chamber.