A survey on various types of emotion models and its importance in emotion recognition through speech

In Last couple of year's artificial intelligence has crop up as an important research area. Emotion recognition as subfield of artificial intelligence can be considered as a highly developed field and researchers has contributed significantly in this area. Hence it is very important to know fundamental of emotions, basic emotions and different model to categories them. This paper will provide enough information on researcher's contribution on defining basic emotions. Emotion recognition majorly performed through speech or voice and facial expressions. This paper contains survey on considering basic emotions in Indian language and future aspects.