The Selador Glossary Presents:
Keyword:
Anechoic chamber
Detailed Description:
An anechoic chamber, sometimes incorrectly referred to as a "soundproof" room, has absorption material on the ceiling and walls so that only minimal reflections occur and conditions similar to those in a direct field D (free field or free sound field) prevail, with the sound pressure decreasing by 1/r from a point sound source according to the distance law. Such rooms are suitable for voice recordings and for locating sound sources. If the sound intensity passing vertically through an imaginary envelope surface around the sound source is measured, the sound power of the source can be determined.
