Why not "îți" here?
Auzi is a transitive verb which takes a direct object, so only the accusative te makes sense here and not the dative îți.
You could use "tu nu îți auzi vocea"
Is this "do you not hear your voice," so that îți is reflexive and possessive, and auzi doesn't need the reflexive pronoun to point back to tu, since tu is no longer the object of the verb?
Tu ne te auzi PE TINE? Not accepted and I think it should be.