Fifth International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications (MAVEBA 2007)

Florence, Italy
December 13-15, 2007

Estimation of a Physical Model of the Vocal Folds Via Dynamic Programming Techniques

E. Marchetto (2), Federico Avanzini (2), Carlo Drioli (1)

(1) Dept. of Information Engineering, University of Padova, Italy
(2) Dept. of Computer Science, University of Verona, Italy

This work presents a procedure for the estimation of a two-mass vocal fold model starting from a time-varying target „²ow signal. The model is speci„±ed by a large number of physical parameters, computed as functions of four articulatory parameters (three laryngeal muscle activations and subglottal pressure). Flow waveforms synthesized by the model are characterized by means of a set of typical voice source quanti„±cation acoustic parameters. Given a sequences of target acoustic parameters, dynamic programming techniques and interpolation based on Radial Basis Function Networks are used to derive sequences of articulatory parameters that lead to resynthesis of the target signal.
Index Terms. Voice source, Low-dimensional models, Estimation, Synthesis

Full Paper (reprinted with permission from Firenze University Press)

Bibliographic reference.  Marchetto, E. / Avanzini, Federico / Drioli, Carlo (2007): "Estimation of a physical model of the vocal folds via dynamic programming techniques", In MAVEBA-2007, 129-132.