Reconstruction of Arabic long vowels using time varying linear prediction technique

It is shown that the spectral difference between a short vowel and its long counterpart in the Arabic language can be neglected for isolated vowels. The analysis technique used is time-varying linear predictive coding. To obtain the set of parameters corresponding to an analysis duration T, the reconstruction of the same segment with different durations is performed automatically. The excitation of the LPC synthesis filter is provided by a modified multipulse algorithm. The intelligibility of the synthetic long vowels is satisfactory