Google Android 2.3 User Manual page 375

Settings
Language
the synthesizer to read. This is particularly useful in combination with the Always Use
My Settings setting, to ensure that text is spoken correctly in a variety of applications.
Engines
view or change its settings.
AUG-2.3-103
Opens a dialog where you can select the language of the text you want
Lists the text-to-speech engines installed on your phone. Touch one to
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Android User's Guide