Emotion recognition support system: Where physicians and psychiatrists meet linguists and data engineers

Figure 2 Spectrograms of the Persian word (sahar) pronounced by a Persian female speaker in neutral (top) and anger (down) situations. Figure 2 shows spectrograms of the word (sahar), spoken by a native female speaker of Persian. The figure illustrates a couple of important differences between acoustic representations of the produced speech sounds. For example, the mean fundamental frequency in anger situations is higher (225 Hz) than that observed for neutral situations (200 Hz). Additionally, acoustic features such as mean formant frequencies (e.g. F1, F2, F3, and F4), minimum and maximum of the fundamental frequency, and mean intensity are lower in neutral situations. More details are provided in Table 1.