We are leading specialist in design / construction of vehicle / component anechoic and semi-anechoic test rooms.

Acoustic Anechoic Chambers are commonly used in acoustics to perform experiments in nominally free field conditions. This means that all sound energy will be traveling away from the source with almost none being reflected back. Common anechoic chamber experiments include measuring the transfer function of a loudspeaker or the directivity of noise radiation from industrial machinery.

We make use of sophisticated technology for manufacturing these and ensure that these offer complete satisfaction to our clients.

Features:

• Complete service
• Feasibility studies through to construction and commissioning
• Acoustic performance of all test rooms guaranteed
• In-house expertise in acoustic design: civil, structural, mechanical and electrical engineering and every aspect of project management
• Using Metal faced anechoic wedge & Foam wedges
• Quality Control to BS EN ISO 9001- 2008

This system is available in both standard modular enclosures and custom-designed modular enclosures to meet exacting specifications in government, industry, research and development, university or hospital use.

RF anechoic chamber is typically used to house the equipment for performing measurements of antenna radiation patterns, WLAN Products, electromagnetic compatibility (EMC), MIL-STD/commercial EMI and radar cross section measurements. Each frequency range has a band designator and each range of frequencies behaves differently and performs different functions. Microwave Absorber and Shielded Anechoic Chambers available with accessories like precision turn table with angular accuracy of 0.05 degree (using non contact encoder) synchronized with commercially available microwave receivers like Network Analyzers, Spectrum Analyzer etc.

Also called, RF Shielded Box, RF Shielded Chamber, RF Chamber, RF Enclosure, RF Shielded Test Enclosure, Radio Frequency Shielding, Radio Frequency Shield, RF Shielded Enclosure System, Radio Frequency Shielded Enclosure System, RF Shielded Rooms, Radio Frequency Shielded Rooms, Electromagnetic Compatibility Test, Electromagnetic Interference Test, EMC EMI Testing, Anechoic Chamber RF

The anechoic chamber uses the non-flammable wedge-shaped absorbers. They use non-sound reflex materials, they have high soundproof capability. These are the things we could not achieve with our conventional wedge-shaped absorbers. Until now, concrete construction or carpentry using wooden boards were common. But our anechoic chamber uses non-flammable soundproof panels (with several layers) even in the sound insulating layer and it can be transferred to a different place.

The semi-anechoic chamber is an anechoic space for measuring noises (sound power level) of equipments and machines. Not like the soundproof chamber, our semi-anechoic chamber is an inspection room that gives consideration to the background noise to measure a single figure. It is made to intercept effects from the external noises by sound insulation and absorption. The cut-off frequency (it differs by type) of the standard wedge-shaped absorber. We can say that there is a high sound absorption capability from low to high frequency.

Anechoic Test Box (Box for sound measurement) is a small anechoic box with a high sound insulation and sound absorption capability. It is used for noise measurement on products, allophones inspection, quality control, and for research and development. With our technology of noise control, we developed a panel with several layers and by producing more than 100 anechoic test boxes in the past. Useful to test Communication equipments, precision instruments, electronic products, nanotechnology-related products and environmental related products.

Reverberation Rooms are designed for the determination of sound power output of noise sources, transmission loss of partitions, insertion loss of silencers, response characteristics of microphones, and random incidence absorption coefficients of materials. They are also used for high-intensity noise-level fatigue testing of aircraft, space vehicles, and other equipment.

Reverberation Rooms are designed not only to fully satisfy reverberation requirements, but also meet specific interior acoustic sound levels and other environmental requirements. In addition, rooms are tailored to provide suitable working spaces, sizes and types of doors, lighting and electrical systems, climate controls, as well as RF shielding appropriate to the work intended.

All these elements are assembled within an engineered modular structural framework Reverberation Room.

Preferred Minimum Room Volume as a function of Lowest Frequency Band of Interest*

Lowest Frequency Band of Interest	Room Volume
	Ft3	M3
125 Hz Octave or 100 Hz one-third octave	7062	200
125 Hz one-third octave	5297	150
160 Hz one-third octave	3531	100
250 Hz octave or 200 Hz one-third octave or higher	2472	70

*From ANSI S1.21-1972 American National Standard Method for the Determination of sound Power Levels for Small Sources in Reverberation Rooms.

Envirotech is the pioneer and leading company in the design, construction, and commissioning of modular reverberation rooms.

Reverberation Rooms is also known as Reverberation Chamber, Reverberation Method, Reverberation Room Method, Reverberation Room Design