Determination of vocal-tract-area function from transfer impedance

A procedure is described for calculating the cross-sectional area of the vocal tract from the magnitude of its transfer impedance when the lips are resistively terminated. The process is noniterative and 5 kHz of line spectrum with normal-pitch frequency spacing contains sufficient information for the synthesis to be performed. The synthetised area functions are unique, and are good approximations to smoothed versions of the actual area functions. Area-function data of Fant are used to test the procedure.