Why computer voices are mostly female
Research suggests this preference starts as early as the womb, Nass said. He cites a study in which fetuses were found to react to the sound of their mother’s voice but not to other female voices. The fetuses showed no distinct reaction to their father’s voice, however.
Another answer lies in history. According to some sources, the use of female voices in navigation devices dates back to World War II, when women’s voices were employed in airplane cockpits because they stood out among the male pilots. And telephone operators have traditionally been female, making people accustomed to getting assistance from a disembodied woman’s voice.
