Analysis of Prosodic features for the degree of emotions of an Assamese Emotional Speech

This research work has attempted to study the speech prosody for designing a speech synthesizer. Speech prosody carries all relevant information about the utterances. Here, it has dealt with the suprasegmental features of the speech utterance. The propsoed research work is experimentally studying the interaction and behavior of segmental and suprasegmental features by concerning the North-East Indian Language Assamese. For efficiently designing an emotional speech recognition system or a speech synthesizer, a proper clarity on understanding the tone of a voice, boundaries of the prosodic, prominent portion of utterance concerning specific words, sentences are required. This paper also discusses the variations of prosodic features for `anger' `normal' `sad' `surprise' `disgust' for different accent types. The degree of emotion considered here are head-high, mid-high, and flat with the help of some selected speech items for female and male taken from our Assamese speech database. This research work has analyzed and discussed the prosodic behavior of utterances from the mean speech rate and fundamental frequency based on the graphs and tables derived from the proposed experiment.