Download AraDict

The previous training steps have been applied without the “short pause” model because of
the special nature of the model. The “sp” model is supposed to take care of optional
silences between words. Since the “sp” model takes care of very short durations of silence,
it was created as a single state HMM which has a direct transition from the entry state to
the exit state.
The Short Pause Model “sp”
The single state of “sp” is identical to the middle state of “sil”, therefore a program was
created to duplicate the middle state of the “sil” model and append it to the MMF. Then
HHEd was used in order to tie the lone state in the “sp” model to the middle state of the
silence model, now these two states share the same set of parameters.
The Two Models Combined to Create the New Refined Model
Seven iterations of embedded re-estimation were applied using the label files that
included the “sp” model.
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