Lecture 30 Blog, ECE438 Fall 2013, Prof. Boutin
Wednesday October 30, 2013 (Week 11) - See Course Outline.
Jump to Lecture 1, 2, 3 ,4 ,5 ,6 ,7 ,8 ,9 ,10 ,11 ,12 ,13 ,14 ,15 ,16 ,17 ,18 ,19 ,20 ,21 ,22 ,23 ,24 ,25 ,26 ,27 ,28 ,29 ,30 ,31 ,32 ,33 ,34 ,35 ,36 ,37 ,38 ,39 ,40 ,41 ,42 ,43 ,44
Today obtained the transfer function for a simple approximation of the vocal tract consisting of an infinitesimally thin tube followed by two tubes of same length but different cross-areas. We noted that the transfer function contained
- a gain factor
- a two time unit time-delay
- an all pole filter.
We discussed the relationship between the mathematical espression we obtained for the transfer function and the action of the vocal tract on a pulse-train of air flow to produce voiced phonemes.
Action items
- Finish HW9. It is due Friday.
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