hearing distance

A man saw him and quietly approached within hearing distance.

I didn't get all the drift be-cause the old man only sort of purred while I was in hearing distance.

"You needn't rub it in," said Captain Downs, carefully noting that there was nobody within hearing distance.

He was sure that they had left enough meat for all the wolf people within hearing distance.

Hence he was not often ready to speak freely to Corney—or to another when he was within hearing distance.