This document discusses text-to-speech (TTS) and speech recognition APIs available on Android. It describes how TTS is implemented using the TextToSpeech API and common methods like onInit. Speech recognition utilizes the RecognizerIntent to start the recognition activity and get results. Both APIs allow interacting with the user through voice instead of only touch interfaces.

1. Android

7. Android iPhone
Android iPhone
API
Android

10. Google API
( )
Android API

12. Google API (TTS:Text-To-Speech
Android API

14. Android
→
→ →

15. http://nd-ilab.jp/android/android_pinyin_translate.apk

16. twitter

18. Activity
Activity

19. →
→Droid Jammer droid
→
→Twitroid Twitter
→

20. Intent
RecognizerIntent.ACTION_RECOGNIZE_SPEECH
android.speech.action.RECOGNIZE_SPEECH
Intent

21. Intent
//
recognitionButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
try {
Intent intent = new Intent(
RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(
RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(
RecognizerIntent.EXTRA_PROMPT,
getText(R.string.dialog_recognition));
startActivityForResult(intent, REQUEST_CODE);
} catch (ActivityNotFoundException e) {
}
}
});

22. Intent
//
recognitionButton.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
try {
Intent intent = new Intent(
RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
intent.putExtra(
RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
intent.putExtra(
RecognizerIntent.EXTRA_PROMPT,
getText(R.string.dialog_recognition));
LANGUAGE_MODEL_WEB_SEARCH
startActivityForResult(intent, REQUEST_CODE);
Web
} catch (ActivityNotFoundException e) {
} LANGUAGE_MODEL_FREE_FORM
}
});

23. protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE && resultCode == RESULT_OK) {
String resultsString = "";
//
ArrayList<String> results = data.getStringArrayListExtra(
RecognizerIntent.EXTRA_RESULTS);
for (int i = 0; i< results.size(); i++) {
resultsString += results.get(i);
}
this.searchText.setText(resultsString);
}
super.onActivityResult(requestCode, resultCode, data);
}

24. •
→ API Google
3G Wifi
→Google →Activity
→ → Android
→

25. •
→
※ RecognizerIntent.EXTRA_LANGUAGE

26. • mp3 API
→
• Google API
→ ML

27. Text-To-Speech API
(android.speech.tts.TextToSpeech)
android.intent.action.START_TTS_SERVICE
Activity

28. TTS
//TTS
@Override
public void onInit(int status) {
if(status == TextToSpeech.SUCCESS){
if(tts.isLanguageAvailable(Locale.US) == TextToSpeech.LANG_MISSING_DATA){
new AlertDialog.Builder(this).setTitle("warning").setMessage("tts(us)
not supprted").show();
}else{
tts.setLanguage(Locale.US);
tts.setPitch(1.8f);
tts.setSpeechRate(0.8f);
}
}else{
new AlertDialog.Builder(this).setTitle("error").setMessage("tts#onInit
error").show();
finish();
}
}

29. TTS
//TTS
@Override
public void onInit(int status) {
if(status == TextToSpeech.SUCCESS){
if(tts.isLanguageAvailable(Locale.US) == TextToSpeech.LANG_MISSING_DATA){
new AlertDialog.Builder(this).setTitle("warning").setMessage("tts(us)
not supprted").show();
}else{
tts.setLanguage(Locale.US);
tts.setPitch(1.8f);
tts.setSpeechRate(0.8f);
}
}else{
new AlertDialog.Builder(this).setTitle("error").setMessage("tts#onInit
error").show();
finish();
}
}

30. SearchResult result = currentResult.get(position);
if(tts.isSpeaking()){
tts.stop();
}
HashMap<String, String> params = new HashMap<String, String>();
params.put(TextToSpeech.Engine.KEY_PARAM_STREAM,String.valueOf
(AudioManager.STREAM_MUSIC));
tts.speak(result.getChn(), TextToSpeech.QUEUE_FLUSH, params);
※
※
(tts.isSpeaking()

31. SearchResult result = currentResult.get(position);
if(tts.isSpeaking()){
tts.stop();
}
HashMap<String, String> params = new HashMap<String, String>();
params.put(TextToSpeech.Engine.KEY_PARAM_STREAM,String.valueOf
(AudioManager.STREAM_MUSIC));
tts.speak(result.getChn(), TextToSpeech.QUEUE_FLUSH, params);
STREAM_ALARM
※
STREAM_MUSIC
※ STREAM_NOTIFICATION
(tts.isSpeaking()

32. Text-To-Speech
API
http://eyes-free.googlecode.com/
eSpeak
TTS PICO
Google TTS 20
C

33. Text-To-Speech API
http://gimite.net/pukiwiki/index.php?Android%20JaTTS
Android
mp3
Galatea Talk
http://hil.t.u-tokyo.ac.jp/~galatea/index-jp.html

35. ※

36. TTS Expanded
Android
JaTTS
→Android

38. Android
API
Android