Next to containing a linguistic message, voices play an essential role in human social interaction. Humans can recognize other individuals by their voice, rely on being recognized and recognition failure is a social misconduct that can lead to high embarrassment. Voices signal the emotional state, the fertility in females and help selecting the right mating partner. Voices are a key part of our personality and shape the trust we have in others. Non-speech information in voice has traditionally be viewed as noise in the speech signal that needs to be cancelled out. Recent research, however, shows that non-speech information in voice actually enhances speech communication.