anechoic

American  

[an-e-koh-ik] / ˌæn ɛˈkoʊ ɪk /

adjective

1. (of a recording chamber, television studio, or the like) characterized by an unusually low degree of reverberation; echo-free.

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anechoic British  

/ ˌænɪˈkəʊɪk /

adjective

1. having a low degree of reverberation of sound

   an anechoic recording studio

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Etymology

Origin of anechoic

First recorded in 1945–50; an- ¹ + echoic

Example Sentences

The generous funding, moreover, allowed scientists and engineers to buy and build expensive equipment—for instance, anechoic chambers to create the world’s quietest rooms.

From The Wall Street Journal • Mar. 28, 2026

Most people tolerate short periods of time in lightless anechoic chambers — about 20 minutes, for his experiments — “fine.”

From New York Times • Nov. 23, 2022

In 2004, Guinness World Records certified the anechoic chamber at Orfield Laboratories as the quietest place on Earth, with an ambient sound level of –9.4 decibels A-weighted.

From New York Times • Nov. 23, 2022

Acoustician Jukka Pätynen stands in an anechoic space, designed so that no surface reflects sound.

From Nature • Apr. 28, 2020

This anechoic chamber is so silent that someone standing in it can hear not just their heart beating, but the blood flowing in their veins.

From The Guardian • Mar. 8, 2019