Research Article
Estimation and Statistical Analysis of Human Voice Parameters to Investigate the Influence of Psychological Stress and to Determine the Vocal Tract Transfer Function of an Individual
Figure 11
Pole zero plots of the vocal tract for vowel /a/ at times 7:00 AM day 1 (upper left side) 10:00 PM day 2 (upper right side), 3:00 PM day 1 (lower left side), and 9:00 PM day 2 (upper right side).
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