| 摘要 |
The invention relates to an automatic process for the analysis of continuous speech. The waveshape of the speech is described with the aid of the resonant frequencies, formants, which arise in the speech organ. Suitable frequencies for the formants are determined from an utterance by dividing it into time frames and analyzing it by linear prediction in order to determine roots of the denominator polynomial and thereby frequency values for each frame. The utterance is divided into voiced regions and in each voiced region the centres of vowel sounds are established in order to obtain a number of starting points. Tracks are formed from the starting points by sorting the roots from frame to frame so that old and new roots are linked together. Factors of merit are calculated for the tracks relative to formants and the tracks are distributed to formants in accordance with the factors of merit. |
