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Mobile telephone systems have made a fantastic progress in general, but deaf people are practically excluded from the benefits of mobiles. The authors' aim was to develop a new communication aid for deaf users. Their system directly converts the audio speech signal into the video of animated face, so the deaf users can receive voice messages by lip-reading. Their system was implemented and tested in a PC environment earlier. This paper reports on the implementation on mobile phones and PDAs. The implementation problems and the potential steps for further improvements are also discussed.
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