Chris has two Android phones and after getting an update, he keeps hearing an unfamiliar voice through his headset. Leo says that the headset offers voices from Cortana, Siri or Google Now. The headset uses the voices from his phone, and that's likely what Chris is hearing.
BlueAnt is a great headset because it will talk you through setup and announce the callers. That's what the Voyager Legend does as well. But it's drives Chris crazy. Leo says it's likely coming from the phone and he can turn it off in the settings.