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Informatics in the service of visually disabled children

Koziak L.

Czasopismo Techniczne. Mechanika

2008

R. 105, z. 3-M

121-128

The progress in modern technologies in the area of information and communication has an influence on institutions and individuals. At schools, informatics may be helpful to blind children in the form of numerous teaching aids. For blind children, the computer is an excellent didactic aid which stimulates their development. Computer programs create a natural potential for individualization of the learning process, diversified depending on the child's predispositions and degree of development, and the type and degree of sight damage.

Postęp nowoczesnych technologii w obszarze informatyki i komunikacji ma wpływ na instytucje i jednostki. W szkole informatyka może być pomocna niewidomym dzieciom poprzez różnego rodzaju środki dydaktyczne. Dla niewidomych dzieci komputer jest doskonałym środkiem dydaktycznym, który stymuluje ich rozwój. Programy komputerowe tworzą naturalne możliwości dla indywidualizacji procesu nauczania, dostosowują zakres do poziomu rozwoju dziecka i stopnia utraty wzroku.

Effects of Synthesized Voice Warning Parameters on Perceived Urgency

Park K. S., Jang P. S.

International Journal of Occupational Safety and Ergonomics

1999

Vol. 5, No. 1

73--95

The effects of synthesized voice warning parameters on perceived urgency were examined in order to build a detailed and usable description of the relation between the parameters of synthesized voice warnings and perceived urgency. Ten native and 10 non-native English speakers participated in 4 experiments to evaluate and quantify the effects of the voice parameters. The results showed that speech rate, average fundamental frequency (F0), voice type, and fundamental frequency contour have clear effects on the perceived urgency of synthesized voice warnings. The effects of quantitative parameters on perceived urgency were scaled using an application of Stevens's power law (1957). In addition, the results showed significant differences in the perceived urgency of average F0 and F0 contour types between native and non-native English speakers. Implications of the results for the design and improvement of synthesized voice warnings are discussed.