This paper describes a new time-domain articulatory speech synthesis model. The system consists of a model of the speech articulators, a time-domain simulation of a lossy acoustic tube model of the vocal tract and a two-mass model of the vocal cords. The vocal tract area function is expressed as a transformation of ten articulatory variables which provide a two-dimensional geometrical description of the vocal tract in the mid-sagittal plane. The acoustic tube model is based on the Kelly-Lochbaum structure which uses the method of reflection coefficients to compute the foward and backward sound pressure waves in a lossless digital transmission line analogue of the vocal tract. The basic Kelly-Lochbaum structure has been extended to permit the modelling of viscous friction losses, yielding wall losses, radiation from the mouth, variable vocal tract length, aspiration and frication.
Bibliographic reference. Owens, F. J. / Wright, G. T. H. / Ramsey, N. W. (1989): "A time-domain articulatory speech synthesiser", In EUROSPEECH-1989, 2176-2179.