उसकी आवाज़

his/her voice

→ वह
phrase Rare #6,970
his/her voice उसकी means “his,” “her,” or “its” here; आवाज़ is feminine, which determines the form of the possessive.
HI: उसकी आवाज़ बहुत साफ़ है।
EN: Her voice is very clear.