Source-Filter Representation of Speech: Case 3

This is an animation of the glottal source spectrum, vocal tract transfer function (filter), output pressure spectrum, and a narrow-band spectrogram of the output pressure.
In this case, the fundamental frequency of the glottal source rises and falls over the duration of the utterance, and the vocal tract filter changes to produce the word "Iowa".
Brad Story
Speech Acoustics Laboratory
Dept. of Speech, Language and Hearing Sciences
University of Arizona