A text‐to‐speech system has three linguistically related components that each affect the intelligibility of the speech it produces. These three components are: (1) the quality of the individual sounds and how they fit together (or how the algorithm fits them together), (2) the accuracy of the output of the ASCII to phonemic unit algorithms and/or rules, and (3) the quality of the prosodic algorithms, including work‐stress and pausegroup implementations. Text‐to‐speech development, therefore, should involve the testing of each of these components for the purposes of maximizing the accuracy and acceptability of each component's output. This presentation will therefore discuss an implementation of testing algorithms for phonemic construction intelligibility, for ASCII‐to‐phone accuracy, and for prosodic naturalness for the development of a text‐to‐speech system for the T.I. Professional Computer.