The following publication is devoted to the mechanisms governing a system which facilitates communication with hearing-impaired people. The key element of the system is an application which translates written Polish texts into the sign language. It uses two complementary databases: the main one consists of a list of lexemes with their characterization, whereas, the latter is a set of grammatical and semantic facts. The message is conveyed in several phases. The core (ideographic) information is complemented by the mimic signs and synthesized speech. The main application joins all the modules and serves as the interface. The authors claim that the system will be helpful in various offices, healthcare centers, schools, etc.
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