Whose in the iron voice that announces you are dead before Julia and Winston are arrested?

The iron voice that announces Winston and Julia's arrest is a representation of the Party's omnipresent surveillance and control in George Orwell's "1984." It symbolizes the cold, mechanical nature of the regime, devoid of empathy or humanity. This voice underscores the totalitarian state's power to invade personal lives and dictate reality, reinforcing the theme of oppression throughout the novel.