Speech Analysis using LPC

Writting a speech analysis tool is not difficult if you choose a good software you are familiar to. Some useful software could be found at the sidebar of this blog. I have written some tools for speech signal analysis using MATLAB for the sake of speech signal studies. It could be found at the matlabcentral:

http://www.mathworks.com/matlabcentral/fileexchange/loadFile.do?objectId=8779&objectType=FILE

This GUI is designed to extract and visualize the spectrum of FFT and LPC of a specific frame, or a window. Following figure shows the LPC spectrum of a frame with 256 samples. The indicator on the upper subplot shows the location of the specific frame.