come within earshot
(of something) Go to within earshot (of something).
move within earshot
(of something) Go to within earshot (of something).
out of earshot
Fig. too far from the source of a sound to hear the sound. I was out of earshot and could not hear the conversation. Mary waited until her children were out of earshot before mentioning the presents she got them.
*within earshot (of something)
close enough to something to hear it. (*Typically: be ~; come ~; get ~; move ~.) As soon as I got within earshot of the music, I decided that I really didn't belong there.