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ACTA ACUSTICA UNITED WITH ACUSTICA Vol. 92 (2006) 731 740
 

Summary: ACTA ACUSTICA UNITED WITH ACUSTICA
Vol. 92 (2006) 731 ­ 740
Physiological Control of Low-Dimensional
Glottal Models with Applications to Voice Source
Parameter Matching
Federico Avanzini, Simone Maratea
Department of Information Engineering, University of Padova, Via G. Gradenigo 6/A, 35131 Padova, Italy
Carlo Drioli
Institute of Phonetics and Dialectology, ISTC-CNR, Via G. Anghinoni 10, 35121 Padova, Italy
Summary
This study explores the possibility for physical models of the glottis to accurately reproduce target glottal flow
waveforms. A set of rules is proposed for controlling a two-mass physical model through activation levels of
laryngeal muscles. The proposed rules convert muscle activities into physical quantities such as fold adduction,
mass, thickness, depth, stiffness. Numerical simulations of the glottal model, controlled through this set of rules,
are used in order to construct a codebook between muscular activations and a set of relevant acoustic parameters
of the voice source, such as foundamental frequency, open quotient, speed quotient, and return quotient. The
paper explores the potentialities of the derived codebook for the control of the glottal model, and its applications
to voice source parameter matching. A fitting procedure is developed, and it is shown that the parameters of the
physiologically-controlled two-mass model can be matched to fit target signals (glottal flow pulses) with good
accuracy.

  

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

 

Collections: Computer Technologies and Information Sciences