earphone

electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear; "it was not the typing but the earphones that she disliked"

वह आकर्णक के माध्यम से आवाज का बुदबुदाना सुन सकता है लेकिन इससे बाहर का बोध नहीं कर सकता है|

he could hear the mumble of voices through the earphone but could make no sense out of it.