The NewsComm system delivers personalized news ~nd other program material as audio to mobile users through a hand-held playback device. This paper focuses on the iterative design and user testing of the hand-held interface. The interface was ftrst designed and tested in a softwareonly enviroument and then ported to a custom hardware platform. The hand-held device enables navigation through audio recordings based on structural information which is extracted from the audio using digital signal processing techniques. The interface design ~00resses the problems of designing a hand-held and primarily non-visual interface for accessing large amounts of StlUCtured audio recordings.
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Roy et al. (1996) studied this question.