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我正在使用以下代码将Text to Speech输出存储为我的应用程序中的wav文件。我不确定错误在哪里,请您看看并建议我吗?

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);
    }
  }

 }
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2 回答 2

10

参考Ted Hopp在这篇文章中的回答:

重要的方法是synthesizeToFile。它会将音频写入您指定的设备上的文件中。然后,您可以使用 MediaPlayer 播放该文件,或者您可以使用 adb 命令行工具将其从设备上拉到您的开发系统上,使用命令

编辑 :

试试这个代码,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:

如果您尝试将波形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在内部存储器中创建一个世界可写目录,如下所示:

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

然后写到这个目录。

编辑 3:

查看您的代码后,您在创建目录和文件时遇到了一些问题: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 模拟器上对其进行了测试,它工作正常,但是您需要使用设备管理器指定模拟器的 sdCard 的大小,编辑 eumlator,并指定您的 sdcard 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 perspective, File Explorer,然后将文件导出到你的电脑。

于 2013-02-04T09:35:52.943 回答
2

您可以使用synthesizeToFile()

来自安卓

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);

收到合成完成通知后,您可以像播放任何其他音频资源一样播放输出文件android.media.MediaPlayer.

为此,您可以使用它

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();
    }
});

现在你完成了

于 2013-02-04T06:01:58.097 回答