Testing Instrumentation & Analysis
Acoustic chambers
We have three high-quality acoustic chambers available for hire, including two reverberation chambers and one anechoic chamber for facilitating sound transmission loss, sound absorption, sound power and acoustic radiation measurements.
Facilities
We have three acoustic chambers: a source room, receiver room and anechoic room.
Source room
The source and receiver rooms are used for testing transmission loss. The sample is installed in a hole in the wall between the two rooms. Sound in the source room then passes through the test sample into the receiver room, where the resultant sound pressure is measured by a traversing or fixed microphone(s).
The source room’s specifications are:
Dimensions
6.085 x 5.175 x 3.355 m
Volume
105.6 m3
Surface area
138.5 m2
Opening area
9.71 m2
Small test panel opening
1100 wide x 1605 tall mm
Small test panel size
1000 wide x 1505 tall mm (inside clamping frame)
Volume between chambers
9.42 m3
Rotating diffuser
Hemi-conical shape
2.5m height
1.5m diameter top
3.0m diameter bottom
Swept volume 10.31 m3
Receiver room
The receiver room is used for acoustic transmission loss, noise reduction and insertion loss testing, and to measure articles’ sound power. The room has several static diffusers and a rotating diffuser, which is used to better disperse sound in the chamber to create a uniform sound field.
The receiver room’s specifications are:
Dimensions
6.840 x 5.565 x 4.720 m
Volume
179.7 m3
Surface area
193.2 m2 Including opening area
Opening area
9.71 m2
Small test panel opening
1100 wide x 1605 tall mm
Small test panel size
1000 wide x 1505 tall mm (inside clamping frame)
Volume between chambers
9.42 m3
Rotating diffuser
Hemi-cylindrical shape
2.4 m height
3.5 m diameter
Swept volume 23.09 m3
Anechoic room
The anechoic room is used to measure objects’ acoustic radiation patterns, and when a quiet measurement environment is required. The room has aluminium floor plates that can be removed to reduce sound reflection.
The anechoic room’s specifications are:
- 4.79 x 3.90 x 3.94 m
- 73.6 m3.
