ACOUSTICAL REVERBERATION LABORATORY

The Mason Acoustical Reverberation Laboratory which is one of the largest facilities of its kind in Asia is constructed strictly in accordance with International Standards.

International Standard tests for Transmission Loss of Building Elements and for Absorption Properties of Materials are conducted in this laboratory. All tests are remotely managed from the computerized Control Room using “state of the art” acoustic control and measuring equipment.

The facility comprises of two adjacent but acoustically isolated reverberation chambers The Source Room which has a volume of 202.5m3 and the Receiving Room which has a volume of 332.6m3.

Each of these rooms is protected from structure borne noise by spring isolators mounted under the floating floors. The very high STC rated walls, roofs and doors of the rooms prevent the passage of airborne sound.

Stationary reflector panels are installed within each of the chambers to provide the highly diffuse environment required by International Testing Standards.

Test specimens up to 4020 x 3010 mounted in the wall of the Receiving Room are tested for transmission loss - precision instruments in the Source Room generate sound at the frequencies and power specified in the relevant Standards and highly sensitive equipment in the Receiving Room measures the sound that travels through the test specimen from the Source room. Computerised analysis of the differences between sound generated and sound received determines the transmission loss of the specimen.