Clairaudience

Clairaudience is the psychic ability to hear what people outside natural hearing range are saying inside one’s mind. This is usually an aspect of another psychic ability such as empathy or sensing rather than a standalone power. During Prue Halliwell’s brief time as an empath, she was able to hear the arguments people were having all over the city. This is most likely due to Prue’s empathy picking up on the intense emotion behind the angry words people were shouting at each other. In Siren Song, Piper is given Leo’s powers, including the power to sense his charges. Using this ability, Piper could hear Phoebe calling out to her for help. It is most likely this aspect of a Whitelighter’s sensing ability that allows charges to communicate simply by calling their name.