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Reverberation chambers are designed to determine the sound power of noise sources (ISO 3741) or the sound absorption coefficient (ISO 354). In order to determine the sound insulation of components a transmitting and a receiving chamber are required and the test specimens are installed in an opening between them.

The room surfaces of reverberation chambers are reflective in order to avoid any sound absorption and to enable a long reverberation time. Nonparallel walls serve to better distribute the geometry-based room modes for the lower frequencies of the sonic spectrum and prevent the appearance of flutter echoes. Additionally, sound reflectors are installed to create a uniformly distributed diffuse sound field. Special acoustic doors are required to ensure a low noise transmission and avoid resonances at low frequencies. If required, PK reverberation chambers are carried out pressure-tight for ventilation and air-conditioning tests.

Listening studios are used to evaluate the sound of loudspeakers or to examine certain noise patterns emitted from technical noise sources. Just as well important is the creation of a certain "acoustic quality", e.g. the characteristic sound of a car. PK listening rooms are usually built as room-in-room construction with the inner shell mounted on springs or PK vibration isolation rails. The walls are covered with a special absorbent lining and a suspended ceiling system should be applied.

Audiometric rooms are used for testing of the human sense of hearing. The requirements are similar to those of a listening studio and can be determined according to customer specification.