Abstract: The first part of this paper introduces the necessity of refreshable Braille display, device which rests on the keyboard by means of raising dots through holes on a flat surface .The second part focuses on the fundamentals of the speech synthesis which converts text to speech, and the speech units. The third part portrays the speech production by the vocal chords and acoustic phonetics. The next part is dealt with the detailed description on various converted speech units (words,sylablles,demisylablles,diphone,allophone,phoneme), the way in which these primitive speech units are combined to form a full speech with phonetic sounds. The process indulged in the analysis of speech signals and the various synthesis methods, the coding of vocal tract parameters using Linear Predictive Coding (LPC) synthesis with its block diagram and finally the conclusion part ,followed by bibliography

Download Full Paper: Click here