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Chapter 20. Accessibility > Adding Text-to-Speech Capability

Adding Text-to-Speech Capability

Text-to-speech builds on Director’s keyboard navigation capability to make your Director movies accessible to people with visual impairments. Each time the user presses the Tab key to highlight an object on the Stage, Director uses a synthesized voice to speak the text associated with that object. The text may be anything from a short label to a long description.

While keyboard navigation by itself is generally used only for sprites that the user would ordinarily need to click on—that is, buttons or editable text fields—keyboard navigation in conjunction with text-to-speech can be used to present the entire contents of a movie aurally. Therefore, when using text-to-speech, you may want to implement keyboard navigation for sprites that the user wouldn’t ordinarily click on—such as pictures and noneditable text sprites—so that the user can navigate to each item in turn and hear a spoken description (Figure 20.18).


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