Research on Text to Speech (TTS) conversion is a large
enterprise that shows an impressive improvement in the last
couple of decades. This article has two main goals. The first goal
is to summarize the published literatures on Text to Speech (TTS),
with discussing about the efforts taken in each paper. The second
goal is to describe specific tasks concentrated during Text to
Speech (TTS) conversion namely, Preprocessing & text detection,
Linearization, Text normalization, prosodic phrasing, OCR,
Acoustic processing and Intonation. We illustrate these topics by
describing the TTS synthesis. This system will be highly useful for
an illiterate and vision impaired people to hear and understand
the content, where they face many problems in their daily life due
to the differences in their script system. This paper starts with the
introduction to some basic concepts on TTS synthesis, which will
be useful f