Inside Macintosh: Sound /

Chapter 4 - Speech Manager / Speech Manager Reference

Application-Defined Routines

The Speech Manager allows you to define callback procedures that execute

• when text input processing is complete (but not necessarily after speech has stopped)
• when text has been completely processed and spoken
• whenever the Speech Manager encounters an embedded synchronization command
• whenever the Speech Manager encounters an error in processing embedded speech commands
• whenever a phoneme is about to be spoken
• whenever a word is about to be spoken

WARNING

When the Speech Manager executes a callback procedure, the Speech Manager sets the A5 register to the value specified by the most recent call to the SetSpeechInfo function with the soCurrentA5 selector. However, if the most recent value specified with the soCurrentA5 selector is NIL or if your application has not yet specified a value, then the Speech Manager leaves the A5 register unchanged. In this case, the callback procedure cannot access application global variables because it executes at interrupt time. For code showing how to use the soCurrentA5 selector to ensure that the A5 register is set to your application's A5, see Listing 4-6 on page 4-21.

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Subtopics

Text-Done Callback Procedure

Speech-Done Callback Procedure

Synchronization Callback Procedure

Error Callback Procedure

Phoneme Callback Procedure

Word Callback Procedure