1. anechoic - Adjective
2. anechoic - Adjective Satellite
not having or producing echoes; sound-absorbent
Source: WordNetan anechoic chamber Source: Internet
An extra complication here is the effect of a reverberant room, and so noise measurement on appliances should state "at 1 m in an open field" or "at 1 m in anechoic chamber ". Source: Internet
Orfield Laboratories’ “anechoic chamber” (a room with no echo that absorbs virtually all sound) is so completely silent that it actually measures in minus decibels. Source: Internet
This anechoic (non-echoing) chamber, which was officially recognized as the world’s quietest place in 2015, is so silent that you might even be able to hear the through your veins. Source: Internet
Designers can use an anechoic chamber to ensure the speaker can be measured independently of room effects, or any of several electronic techniques that, to some extent, substitute for such chambers. Source: Internet
Measurements made outdoors will approximate well to anechoic conditions. Source: Internet