earshot
UK: ˈɪəʃɒt | US: ˈɪrʃɑːt
n. the range within which a sound can be heard
The word "earshot" combines "ear," referring to the organ of hearing, and "shot," which historically denoted the range of a projectile (e.g., a gunshot). By the 17th century, "shot" metaphorically extended to describe the reach of sound, giving rise to "earshot" as the distance one can hear. This reflects a vivid analogy between auditory perception and the trajectory of a physical object.
She stayed within earshot to hear the announcement clearly.
The children played just out of earshot, so their laughter was faint.
He moved closer to keep the conversation within earshot.
The speaker’s voice carried beyond normal earshot in the quiet valley.
Ensure the microphone is within earshot of all participants.