This paper presents an overview of the problems that occur during text
-to-speech (TTS) conversion and describes the particular solutions to
these problems taken within the AT&T Bell Laboratories TTS system. In
addition to discussing the linguistic and speech analysis issues that
must be addressed in a high-quality TTS system, this paper also outlin
es the modular architecture of the AT&T Bell Laboratories TTS system a
nd the advantages of its modular design.