SALAMA -  Swahili Language Manager

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Tone marking
Most African languages have tone as a characteristic feature. However, tone is only rarely marked in writing, partly because it makes writing cumbersome. However, for developing computational applications for these languages, it is necessary that tone patterns are marked in writing. Especially such applications as speech analysis and speech synthesis require overt tone marking of text.

Inserting tone marks to text that originally is without tone marks is a complicated task, especially in languages that have lexical and grammatical tones. For example, the final tone pattern of a verb-form  depends on the lexical tone and the grammatical tone pattern.

A general method for tone marking was implemented using Kinyarwanda language as a test case. A detailed descriptioin of this system  is below.