Table 3. (a) Detailed description of the datasets, (b) categories of emotional speech databases, theirfeatures, and some examples of each category.

(a) Datasets	Speakers	Emotions	Languages	Size
RAVDESS	24 actors (12 male, 12 female)	Eight emotions (calm, neutral, angry, happy, fear, surprise, sad, disgust)	North American English	7,356 files (total size: 24.8 GB).
SAVEE	4 (male)	Seven emotions (sadness, neutral, frustration, happiness, disgust,anger, surprise)	British English	480 utterances (120 utterances per speaker)
Emo-DB	10 (5 male, 5 female)	Seven emotions (neutral, fear, boredom, disgust, sad, angry, joy)	German	535 utterances
IEMOCAP	10 (5 male, 5 female)	Nine emotions (surprise, happiness, sadness, anger, fear, excitement, neutral, frustration and others)	English	12 hours of recordings