The difference between an anechoic chamber and a reverberation chamber #anechoicchamber

Anechoic chamber and reverberation room are two special rooms used for acoustic testing. Their design purposes and acoustic characteristics are fundamentally different.

The main purpose of an anechoic chamber is to provide a reflection-free acoustic environment, that is, to absorb all incident sound waves as much as possible to avoid sound reverberation and interference. In an anechoic chamber, the walls, floor and ceiling are covered with special sound-absorbing materials, such as wedge-shaped sound absorbers, which can effectively absorb almost all sound energy so that the sound will not be reflected multiple times. Anechoic chambers are often used for acoustic measurements, such as noise source location, sound power measurement, testing of acoustic materials, etc., especially when precise measurement of sound characteristics is required.

A reverberation chamber is the opposite of an anechoic chamber and is designed to produce a large number of sound reflections to simulate the behavior of sound in a natural environment. The walls, floor, and ceiling of a reverberation room are usually made of hard, smooth materials to ensure that sound waves can be reflected multiple times in the room to create a rich reverberation effect. Reverberation time is an important parameter of a reverberation chamber. It refers to the time it takes for sound to completely disappear in a closed space. Reverberation chambers are often used to test the propagation characteristics of sound in various environments and to evaluate the sound absorption properties of materials.

In summary, the main difference between an anechoic chamber and a reverberation chamber is how they process sound waves: the anechoic chamber is designed to eliminate sound reflections and provide an ideal, controllable acoustic measurement environment; while the reverberation chamber is to Generate and study multiple reflections of sound waves to simulate sound behavior in real environments.