The present invention is directed to the provision of a personalized speaker
phone and hands-free telephony. In particular, the present invention allows communications
to be output along a narrowly defined path, rather than being broadcast. In this
way, a private voice communication signal can be provided to a user, even though
the user is not holding the output device to the user's ear. Furthermore, by providing
audible signals along narrowly defined paths, different audible signals may be
provided to users at the same location, without interfering with one another.