Away from echo, i.e. absorbing
Having no reverberation. An anechoic chamber is a room in which there is no echo.
Neither having nor producing an echo angle of attack. The acute angle of attack between the chord of an airfoil and its direction of motion relative to the air, often referred to as "alpha"; when an airfoil's exceeds the one that provides maximum lift, it goes into a stall, losing air speed and, potentially, the capability of the pilot to control the airplane.
not having or producing echoes; sound-absorbent; "an anechoic chamber"
Echo free. An anechoic room has no reflected sound. This is accomplished by treating all of the room's surfaces with sound absorbing material.
1. The complete absence of reflected sound (echo). 2. An environment that prevents (through dissipation and absorption of sound waves) all reflected sound, as in an anechoic chamber.
Designed to absorb sound or radiation
Without echoes, reflections or reverberation.
having a low degree of reverberation of sound.
Echoless: producing or characterized by few or no echoes
Non-reverberant. An anechoic chamber is an acoustically dead room designed primarily for the purpose of accurate loudspeaker measurement.
rooms that use special materials to make the room "dead" with the reverberation time close to zero.
Without echo. An anechoic situation exists when acoustic signals produced by a source are not reflected back to it or anywhere else. Room reverberation does not exist under anechoic conditions. Most recordings are not recorded anechoically, because the sonic signature of the environment is a part of what the engineer will want to record. Note that because the ground is reflective, a true anechoic condition would only exist fairly high up off the ground and outdoors. A skydiver experiences anechoic conditions. See also Ambience.