Area estimation from ARMA analysis based on vocal-tract model

A vocal-tract model with boundary conditions is proposed, and it is shown that the model can be applied to a vocal-tract simulator add an estimation algorithm of vocal-tract shapes. Since our vocal-tract simulator can dynamically synthesize continuous speech with the vocal-fold vibration and the loss factor in the vocal-tract, this simulator can be used as a tool for accurate evaluation of the estimation accuracy of the formants or the characteristics of the vocal-tract. We propose a new method estimating cross-sectional area of vocal-tract from the ARMA parameters, and this method is based on the vocal-tract model and our ARMA estimation algorithms.