Integrating Rule and Template-Based Approaches to Prosody Generation for Emotional BODO Speech Synthesis

This research paper represents a hybrid technique to improve the quality of the rule-based approach to generate prosody for Bodo speech synthesis by integrating prosody parametric manipulation with template parametric manipulation to increase the intonation variability of the synthesized output. Prosody means the rhythmic and intonation aspects of a spoken language. Prosody is also the combination of pitch, intensity and duration. In our normal speech, prosodic characters can be evaluated to express different emotions. Generally prosodic characters of neutral synthesized speech are evaluated to express the four basic emotions. We have considered happiness, anger, sadness and fear. Through this concept we are going to represent a methodology to express and evaluate the effect of the output to produce the accurate prosody of Bodo speech to confirm the perception tests. The correlation between acoustic features and emotion in Bodo speech are ascertained by the analysis of the database of Bodo speech.