Assertion: echo | /r/HasProperty | a reflection of sound
Facets:
value: in audio signal processing
type: OTHER
value: in acoustics
type: OTHER
Source sentences:
text: In audio signal processing and acoustics, echo is a reflection of sound that arrives at the listener with a delay after the direct sound.
text: In audio signal processing and acoustics, an echo (plural echoes) is a reflection of sound, arriving at the listener some time after the direct sound.