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One-delayed-mass model for efficient synthesis of glottal flow Federico Avanzini1,2

Summary: One-delayed-mass model for efficient synthesis of glottal flow
Federico Avanzini1,2
, Paavo Alku2
, Matti Karjalainen2
Dipartimento di Elettronica ed Informatica, Universit`a di Padova, Italy
Lab. of Acoustics and Audio Signal Processing, Helsinki University of Technology, Finland
avanzini@dei.unipd.it {paavo.alku;matti.karjalainen}@hut.fi
http://www.dei.unipd.it http://www.acoustics.hut.fi
A lumped physical model of the glottal source is presented. Vo-
cal folds are described as single masses, but vertical phase dif-
ferences between upper and lower margins of the folds are taken
into account by appropriately describing the non-linear interac-
tion of the mechanical model with aerodynamics. This results
in a modified one-mass model, or a "one-delayed-mass model".
Analysis on numerical simulations shows that the system be-
haves qualitatively as higher-dimensional models (such as the
two-mass model by Ishizaka and Flanagan); in particular, con-


Source: Avanzini, Federico - Department of Information Engineering, UniversitÓ degli Studi di Padova


Collections: Computer Technologies and Information Sciences