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2.1 Introduction

NaturalText 1.0 is a CT Access service that provides functions for: converting text input into audible spoken output pausing, resuming, and jumping within spoken text modifying the sound of output speech filtering input text for target words and phrases preprocessing English e-mail text so that is can be appropriately spoken
NaturalText operates as the TTS service within the CT Access environment. CT Access is part of the Natural Access series of software products that provide a way of managing telephony and media functionality in computer systems. The NaturalText API provides a way for CT Access applications to execute text-to-speech functions on Diva daughterboards attached to AG boards.
NaturalText applications use CT Access functions to manage events and contexts, and ADI Service functions to establish and disconnect calls. They also use a special set of TTS functions to perform tasks related to text-to-speech conversion. Figure 1 shows how the TTS service fits into the CT Access architecture.
Figure 1. CT Access with ADI service and TTS service

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