Definition

1. Adjective:
   • Not having or producing echoes; sound-absorbent: Describes an environment or material that prevents the reflection of sound waves, resulting in no reverberation or echo.

Usage

The word "anechoic" is a technical adjective primarily used in acoustics and engineering. It describes spaces, chambers, or materials designed to be completely non-reflective to sound. It is most commonly encountered in the fixed phrase "anechoic chamber."

Examples

• Adjective:
  • The recording studio was built with anechoic panels to ensure pure sound capture.
  • Scientists conducted the audio experiment in an anechoic chamber to eliminate all external noise and reflections.
  • The anechoic tiles on the submarine's hull help it avoid detection by sonar.

Advanced Usage

• "Anechoic chamber": A room designed to completely absorb reflections of sound or electromagnetic waves. This is the most frequent and standard collocation.
  • The antenna's radiation pattern was measured in an anechoic chamber.

Variants and Related Words

• Anechoicity (n): The quality or state of being anechoic.
  • The anechoicity of the room was critical for the acoustic test.

Synonyms

• Echo-free: Lacking echoes.
• Non-reflective (regarding sound): Not reflecting sound waves.
• Sound-absorbent: Able to soak up sound energy.

Antonyms

• Echoic: Having or producing echoes.
• Reverberant: Characterized by reverberation or prolonged sound reflection.
• Reflective (regarding sound): Tending to reflect sound waves.

Adjective

1. not having or producing echoes; sound-absorbent
   • an anechoic chamber