DP-based determination of F/sub 0/ contours from speech signals
A. Kiessling, Ralf Kompe, Hendrik J. Niemann, Elmar Nöth, Anton M. Batliner · 1992
A new algorithm for the determination of fundamental frequency (F/sub 0/) contours is presented. For each voiced frame appropriate divisors of the frequency with the maximum energy in the spectrum are taken as F/sub 0/ candidates. An F/sub 0/ contour is computed using a dynamic programming (DP) method by minimizing a weighted sum of the difference between consecutive candidates and the distance of the candidates to a predetermined local target value. With this algorithm a coarse error rate of 0.6% on the frame level and of 6.4% on the sentence level is achieved on a German speech database. On the average the difference to the reference is 1.9 Hz. The algorithm outperforms two conventional algorithms tested on the same data.>