1 <p>This sample demonstrates how to create a text to speech engine 2 that users can install on their devices.</p> 3 4 <p>The application includes a service and two activities:</p> 5 <ul> 6 <li><a 7 href="src/com/example/android/ttsengine/RobotSpeakTtsService.html"><code>RobotSpeakTtsService</code></a>, 8 a simple text to speech engine that converts sentences into audio by 9 generating a square wave of a given frequency for each alphabet of a 10 given language. Though this doesn't qualify as speech (except for robots) 11 it exercises all aspects of the new text to speech API 12 by subclassing the 13 <a href="../../../reference/android/speech/tts/TextToSpeechService.html"><code>TextToSpeechService</code></a> 14 framework class. 15 </li> 16 <li><a 17 href="src/com/example/android/ttsengine/CheckVoiceData.html"><code>CheckVoiceData</code></a>, 18 an activity that checks that all voice related data is installed and 19 available.</li> 20 <li><a 21 href="src/com/example/android/ttsengine/RobotSpeakSettings.html"><code>RobotSpeakSettings</code></a>, 22 a settings screen for users to set various engine parameters. This is 23 usually accessed by users from the system wide settings app. This must be 24 declared in the <code>AndroidManifest.xml</code> file as a 25 <code>meta-data</code> element.</li> 26 27 <!-- TODO: Fix this when the API level for ICS is finalized --> 28 <p>Note that this API is supported only on Android 4.0 (API level 13) 29 and higher versions of the platform.</p> 30 31
