An anechoic chamber is a specialized room designed to completely absorb sound or electromagnetic waves. Derived from the Greek word "an-echoic" meaning "without echo," these chambers simulate a free-field environment where external noise and internal reflections are eliminated. They are used extensively for testing, research, and development in fields like acoustics, electronics, communications, and aerospace.

Types of Anechoic Chambers
Acoustic Anechoic Chambers

Designed to absorb sound waves across a wide frequency range.

Lined with wedges of sound-absorbing foam or fiberglass.

Used for testing loudspeakers, microphones, mobile devices, and human hearing response.

Electromagnetic (EMC/EMI) Anechoic Chambers

Shielded environments to block external RF (radio frequency) interference.

Lined with materials that absorb radio and microwave signals.

Used for testing wireless communication devices, radar systems, and antennas.

Key Features
Wedge-shaped foam or ferrite tiles for wave absorption.

Isolated suspension floors to reduce vibrations.

RF shielding (in EMC chambers) to block external signals.

Quiet zones where measurements are taken without ambient interference.