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2. Description of the Related Art A computer audio interface allows a user to interact with a computer application through a speaker and a microphone. The interface playS audio messages to a user through the Speakers, and receives audio input from a user, Such as responses to audio queries generated by the interface, through the microphone. The messages are associated with notifications to the interface from an external Source which alerts the interface to the existence of the message, and can be a predefined Script spawned by a particular event, or an original message, Such as an e-mail, input by a third perSon. The notification can be the message itself, a control Signal, and the like which indicates the existence of a message for playing to the user.

Audio-only interfaces are useful in situations in which other types of interfaces, Such as a keyboard, mouse, Video display, and the like, are impractical or …