如何将文本到语音输出存储为WAV文件?

时间:2013-02-04 09:14:06

标签: android text-to-speech android-mediaplayer

我使用以下代码在我的应用程序中将Text to Speech输出存储为 wav 文件。我不确定错误在哪里,你能看一下并建议我吗?

public class MainActivity extends Activity {

Button store, play;
EditText input;
String speakTextTxt;
TextToSpeech mTts;
HashMap<String, String> myHashRender = new HashMap<String, String>();
String tempDestFile ;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    store = (Button) findViewById(R.id.button1);
    play = (Button) findViewById(R.id.button2);
    input = (EditText) findViewById(R.id.editText1);
    store.setOnClickListener(new OnClickListener()  {

        public void onClick(View v) {
            speakTextTxt = "Hello world Hello world Hello world Hello world Hello world Hello world Hello world Hello world Hello world Hello world Hello world";
            HashMap<String, String> myHashRender = new HashMap<String, String>();
            myHashRender.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, speakTextTxt);

            String exStoragePath = Environment.getExternalStorageDirectory().getAbsolutePath();

            File appTmpPath = new File(exStoragePath + "/sounds/");
            appTmpPath.mkdirs();

            String tempFilename = "hello.mp3";

            tempDestFile = appTmpPath.getAbsolutePath() + "/" + tempFilename;

            new MySpeech(speakTextTxt);


        }
    });
}

class MySpeech implements OnInitListener
{

            String tts;

    public MySpeech(String tts)
    {
        this.tts = tts;
        mTts = new TextToSpeech(MainActivity.this, this);
    }

    @Override
    public void onInit(int status) 
    {
        Log.v("log", "initi");
        int i = mTts.synthesizeToFile(speakTextTxt, myHashRender, tempDestFile);
        if(i == TextToSpeech.SUCCESS)
        {

          Toast toast = Toast.makeText(MainActivity.this, "Saved "+i,
                Toast.LENGTH_SHORT);
          toast.show();   
        }
        System.out.println("Result : " + i);
    }
  }

 }

2 个答案:

答案 0 :(得分:8)

在此post :

中提及 Ted Hopp 的答案

重要的方法是synthesizeToFile。它会将音频写入您指定的设备上的文件。然后,您可以使用MediaPlayer播放该文件,或者使用adb命令行工具使用命令将其从设备上移到开发系统上

编辑:

尝试此代码,然后检查路径sdcard/是否包含文件:test.wav

HashMap<String, String> myHashRender = new HashMap();
String textToConvert = "this is a demo for saving a WAV file";
String destinationFileName = "/sdcard/test.wav";
myHashRender.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, textToConvert);
mTts.synthesizeToFile(textToConvert, myHashRender, destinationFileName);

编辑2:

如果您尝试将wave文件保存到内部存储器(而不是/sdcard/文件夹),那么实现此目的的唯一方法是创建一个可写入的世界 内部存储器中的目录如下:

context.getDir("soundfiles", Context.MODE_WORLD_WRITEABLE);

然后写信给这个目录。

编辑3:

在查看代码后,您只需要创建目录和文件的一些问题:代码应该是这样的:

speakTextTxt = "Hello world";
HashMap<String, String> myHashRender = new HashMap<String, String>();
myHashRender.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, speakTextTxt);

String exStoragePath = Environment.getExternalStorageDirectory().getAbsolutePath();
Log.d("MainActivity", "exStoragePath : "+exStoragePath);
File appTmpPath = new File(exStoragePath + "/sounds/");
boolean isDirectoryCreated = appTmpPath.mkdirs();
Log.d("MainActivity", "directory "+appTmpPath+" is created : "+isDirectoryCreated);
String tempFilename = "tmpaudio.wav";
tempDestFile = appTmpPath.getAbsolutePath() + File.separator + tempFilename;
Log.d("MainActivity", "tempDestFile : "+tempDestFile);
new MySpeech(speakTextTxt);

我已经在Android模拟器上测试了它,它工作正常,但你需要使用设备管理器指定模拟器的sdCard的大小,编辑eumlator,并指定你的SD卡的大小:例如512 Mb。然后你会在路径中找到wav文件:mnt/sdcard/sounds/tmpaudio.wav 要测试它,只需打开DDMS perspectiveFile Explorer,然后将文件导出到您的PC。

答案 1 :(得分:2)

您可以使用synthesizeToFile()

来自Android

HashMap<String, String> myHashRender = new HashMap();
String wakeUpText = "Are you up yet?";
String destFileName = "/sdcard/myAppCache/wakeUp.wav";
myHashRender.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, wakeUpText);
mTts.synthesizeToFile(wakuUpText, myHashRender, destFileName);

一旦您收到合成完成的通知,就可以像使用android.media.MediaPlayer.

的任何其他音频资源一样播放输出文件

为此你可以使用它

mMediaPlayer = new MediaPlayer();
mMediaPlayer = MediaPlayer.create(this,R.raw.button);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.start();
mMediaPlayer.setOnCompletionListener(new OnCompletionListener() {                   
    @Override
    public void onCompletion(MediaPlayer mp) {
        mMediaPlayer.stop();
    }
});

现在你已经完成了