Lecture 32 Blog, ECE438 Fall 2010, Prof. Boutin

Monday November 8, 2010 (Week 12) - See Course Outline.

We began the lecture by obtaining an approximation of the transfer function of the vocal tract system using a simple model consisting of tubes of equal length connected to a tube of zero diameter. We observed that the transfer function of such a system is an all pole filter cascaded with a time delay. The poles of this filter determine the location of the local maxima of the voiced phonemes we pronounced; these local maxima are called "formants" and play an important role in the recognition of speech.

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