1<p>This sample demonstrates how to create a text to speech engine
2that 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)
29and higher versions of the platform.</p>
30
31