A mini anechoic chamber is a miniature version of the anechoic chamber. The small anechoic test chamber enables the testing of devices with consistently accurate results. Repeated testing of devices is a lot easier in a mini anechoic chamber which can be placed closer at hand than having to transport the devices to a large anechoic chamber. Testing of a speaker can easily be done in a mini anechoic chamber a number of times till the desired results are achieved.

The greatest benefit of the mini anechoic chamber is that it is not a permanent structure like the anechoic chamber. It can be placed where it is required and is easily accessible for use. It can be transported to the required location with ease.

Features of Mini Anechoic Chamber

•    Low cost option: The miniature anechoic chamber is a low cost option of anechoic chamber. It has similar features to the Anechoic Chamber such as sound insulated with no reflective surfaces and absorbs electromagnetic waves.
•    High performance: The mini anechoic chamber gives a good performance when it comes to sound and electromagnetic wave absorption.
•    Quick construction: The mini anechoic chamber takes much less time to construct than the anechoic chamber as it is smaller and made of portable material.
•    Small space: Due to its miniature size the mini anechoic chamber occupies very little floor space.

Application of Mini Anechoic chamber
The mini anechoic chamber is used for testing a number of different devices such as small motors and fans, electronic devices, telecommunication devices like cellular phone, speakers and other audio related devices, medical equipment, automobile parts and many others.

While the Anechoic Chamber is totally sound absorbent the semi anechoic chamber has been designed with a solid floor. A semi anechoic chamber has sound reflections that reflect back from the floor but are absorbed by the walls. For heavy equipment it is easier to use a semi anechoic room as the floor supports the weight of heavy equipment that is placed on it.

Design of semi anechoic chamber
The semi anechoic chamber has sound and electromagnetic wave absorbent walls and ceiling. The working floor of the chamber has a grating floor section to support heavy weights. For sound testing of parts that are a very heavy we have the semi anechoic chamber.

Features of the semi anechoic chamber

•    Solid floor: the floor of the semi anechoic chamber is very sturdy and can support very heavy weights.
•    Sound insulated construction: The semi anechoic chamber is constructed with material to give is complete sound insulation.

Application of semi anechoic room
The semi anechoic room is widely used as recording rooms and for filming movie scenes. Most TV studios, Audio production studios, radio studios etc. are semi anechoic chambers. The semi anechoic chamber is also popular as a project laboratory or computer laboratory and a listening room.

The Hemi Anechoic chamber comprises of acoustically treated ceiling and walls but has a hard floor that has no acoustic treatment. The floor is sturdy and can support the weight of heavy machines and parts that need to be tested for their noise emission levels. Even though the floors of the hemi anechoic chamber reflect the sound waves it is absorbed by the other surfaces like the ceiling and walls.

The Hemi Anechoic Chamber is a free field environment that gives accurate test results. It is used for noise testing, identifying the source of the sound, and the directivity of the sound. It provides vibration isolation for precise noise measurement.

Features of the Hemi Anechoic chamber

•    Silent air vents that are acoustically treated
•    Cable facility in and out of the chamber
•    Temperature controlled environment – heating and cooling as required
•    Low noise environment
•    Low frequency environment
•    Compliance with the required testing standards

Application of Hemi Anechoic Chamber
The Hemi Anechoic Chamber is used for high precision testing of engineering grade equipment. Most commonly the Hemi Anechoic chamber is used to test fans, pumps, compressors, industrial equipment, vehicles, automobile parts and many others. The fully integrated environment can be utilised for any type of equipment including routers and servers.

We can do an onsite performance verification of the chamber for the client. This will test out the ambient noise level of the interiors.

The Anechoic chamber is an environment that is sound insulated and free from electromagnetic waves. In general the anechoic chamber is a permanent structure made of bricks and concrete, however the portable anechoic chamber is anindependent unit and not a permanent structure. It can be transported from one location to another independently.

Dimensions of the Portable Anechoic Chamber
The external dimensions of a standard portable anechoic chamber are W - 2337 mm x D - 2337 mm x H - 2413 mm (W - 92" x D - 92" x H - 95") and dimensions of the internal free field area is W - 1499 mm x D - 1499 mm x H - 1499 mm (W - 59" x D - 59" x H - 59").

Technical specification of Portable Anechoic Chamber

•    Wedges: Standard EW wedges
•    Cut off frequency: 250 Hz
•    Internal Lighting: Yes
•    Cable access ports: Yes
•    Door security: Safety release from inside
•    Fire retardant: Yes
•    Body: All steel

Application of Portable Anechoic Chamber
The portable anechoic chamber is used mainly for electrical and computer related equipment. It is used for testing products that are noise sensitive and susceptible to damage by electromagnetic waves. Products like speakers, routers, modems, servers, Bluetooth devices and many others.

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