statistical variation analysis of formant and pitch frequencies in anger and happiness emotional sentences in farsi language

setup of an emotion recognition or emotional speech recognition system is directly related to how emotion changes the speech features. in this research, the influence of emotion on the anger and happiness was evaluated and the results were compared with the neutral speech. so the pitch frequency and the first three formant frequencies were used. the experimental results showed that there are logical and reasonable relations between the emotions and variations of these speech features. these results were also used to confirm our previous research about emotion recognition and emotional speech recognition.