This MATLAB exercise computes and plots the impulse response and the log magnitude spectrum (along with the locations of the formants) for a uniform length p-tube model of the vocal tract by explicitly exciting the flow diagram of the p-tube model with a forward-going impulse, and then solving the nodal equations for the forward and backward signals at each node and for each instant of time. The file '2.3 p Tube Vocal Tract.pdf' provides a User's Guide for this exercise. The file 'p Tube Vocal Tract.pdf' provides a User's Guide for this exercise.