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'''Note:''' ''A specialized'' Solid State Software^TM ''Command Module must be plugged into computer console to activate the Speech Synthesizer''. You can use the [[Speed Speech Editor]] Command Module or any other module which is programmed for speech, such as Early Reading Command Module.  The Speech Editor Command Module gives you instant access to the nearly 400 words and phrases in the Speech Synthesizer's resident vocabulary (see page 10). You can arrange them in any order, creating the phrases and sentences you want the computer to say. Also, by selecting TI BASIC when this Command Module is plugged into the console, you can utilize the subprograms, CALL SAY, and CALL SPGET, to write your own "speaking" programs. (These features are explained fully in the manual that accompanies the [[Speech Editor]] Command Module).  Certain other Command Modules are also programmed to work with the Speech Synthesizer. While you're using one of these modules, the computer "talks" its way through the activities using the Speech Synthesizer's resident vocabulary, plus any additional words or phrases contained in the Command Module itself. You'll hear directions, encouragement, and praise for good moves and promptings when an incorrect entry is made.  ''For Further Information'' The following articles contain discussions of speech synthesis technology: Larry Brantingham. "Speech Synthesis with Linear Predictive Coding." ''Interface Age'', June, 1979, pp. 72-75. N.C. Pearson. "Electronics Speaks Out." ''Design News'', April 9, 1979, pp.76-79.