Verifying a vocal tract model with a closed side-branch

In this article an implementation of a vocal tract model and its validation are described. The model uses a transmission line model to calculate pole and zero frequencies for a vocal tract with a closed side-branch such as a sublingual cavity. In the validation study calculated pole and zero frequen cies from the model are compared with frequencies estimated using elementar y acoustic formulas for a variety of vocal tract configurations. (C) 2001 A coustical Society of America.