Download of CocoaSpeechSynthesisExample 1.4 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X was originally developed by Apple Inc. We recommend checking the downloaded files with any free antivirus. The following version: 1.4 is the most frequently downloaded one by the program users. The program is included in Developer Tools.
From the developer:
The CocoaSpeechSynthensisExample shows how to use the Carbon Speech Synthesis API from within a Mac OS X Cocoa application. Once built, the application provides access to virtually all the features of the Speech Synthesis Framework. The application code provides examples of the following concepts: - Word highlighting using the word callback
You may want to check out more software for Mac, such as PowerGlot, ChIDE or flex sdk 3, which might be similar to CocoaSpeechSynthesisExample.