INVERSE PROBLEM FOR FRICATIVES
Articulatory parameters, vocal tract shape and cross-sectional area function were determined from fricative spectra. A model of fricative generation was used for providing acoustical constraints for an optimization procedure with muscles work as the criterion of optimality. A distance between spectra was measured with the use of the Cauchy-Bounjakovsky non-equality. A proper initial approximation of articulatory parameters is required to obtain an accurate and stable solution of the inverse problem.
inverse problem fricatives vocal tract shape optimization speech