如何设置文本到语音的采样率 - 安卓

Question

在我的文本到语音的输出中，我需要将采样率设置为大约 32000 Hz，音高 - 1 和语音速率 - 0.2(我已经这样做了)。但是我无法设置采样率。

tts = new TextToSpeech(getApplicationContext(), new TextToSpeech.OnInitListener() {
@Override
public void onInit(int status) {
if(status != TextToSpeech.ERROR) {
tts.setLanguage(Locale.US);
tts.setSpeechRate((float) 0.2);
tts.setPitch((float) 1);
}
}
}, TextToSpeech.Engine.KEY_FEATURE_NETWORK_SYNTHESIS);

我使用AudioTrack来设置采样率，但这需要很多时间，因为我必须首先TTS合成到文件，然后在AudioTrack中播放它。

HashMap<String, String> myHasRead = new HashMap<String, String>();
myHasRead.put(TextToSpeech.Engine.KEY_PARAM_UTTERANCE_ID, outPutS);
String StorePath = Environment.getExternalStorageDirectory().getAbsolutePath();
File myF = new File(StorePath+"/tempAudio.wav");
try {
myF.createNewFile();
} catch (IOException e) {
e.printStackTrace();
}
tts.setOnUtteranceProgressListener(new TtsUtteranceListener());
tts.synthesizeToFile("Bla Bla bla",myHasRead, StorePath+"/tempAudio.wav");
....
private class TtsUtteranceListener extends UtteranceProgressListener {
@Override
public void onStart(String utteranceId) {
}
@Override
public void onDone(String utteranceId) {
playWav();
}
@Override
public void onError(String utteranceId) {
}
}
public void playWav(){
int minBufferSize = AudioTrack.getMinBufferSize(32000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);
int bufferSize = 512;
AudioTrack at = new AudioTrack(AudioManager.STREAM_MUSIC, 32000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, minBufferSize, AudioTrack.MODE_STREAM);
String filepath = Environment.getExternalStorageDirectory().getAbsolutePath();
int i = 0;
byte[] s = new byte[bufferSize];
try {
FileInputStream fin = new FileInputStream(filepath + "/tempAudio.wav");
DataInputStream dis = new DataInputStream(fin);
at.play();
while((i = dis.read(s, 0, bufferSize)) > -1){
at.write(s, 0, i);
}
at.stop();
at.release();
dis.close();
fin.close();
} catch (FileNotFoundException e) {
// TODO
e.printStackTrace();
} catch (IOException e) {
// TODO
e.printStackTrace();
}
}

有一种方法可以将采样率直接设置为 TTS，例如tts.setSampleRate(32000);或像DataInputStream dis = new DataInputStream(tts.speak("bla bla bla").getDataInputStream);一样将流从 TTS 传输到音轨。简而言之，我需要花栗鼠的Android文本到语音，但没有合成文件或直接流TTS语音数据在AudioTrack中，而无需保存TTS的输出。

Answer 1

不能直接设置 TTS 采样率：

我在一个项目中做了这样的事情(Dint 使用 TTS)

这可能会对你有所帮助，

要播放不同语音类型的录音：-

波采样=90000;(花栗鼠)

波采样=24200;("慢动作")

波采样=30000;("祸害")/蝙蝠侠角色

波采样=18000;(幽灵)

波采样=70000;(蜜蜂)

波采样=60000;(女)

波采样=37000;(正常)

void playRecord() throws IOException {


int minBufferSize = AudioTrack.getMinBufferSize(8000, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);
int bufferSize = 512;
at = new AudioTrack(AudioManager.STREAM_MUSIC, waveSampling, AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, minBufferSize, AudioTrack.MODE_STREAM);
String filepath = Environment.getExternalStorageDirectory().getAbsolutePath();
int i = 0;
byte[] s = new byte[bufferSize];
try {
FileInputStream fin = new FileInputStream(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Voice Changer/temp/"+filename+".wav");
DataInputStream dis = new DataInputStream(fin);
at.play();
while((i = dis.read(s, 0, bufferSize)) > -1){
at.write(s, 0, i);
}
at.stop();
at.release();
dis.close();
fin.close();
openmenu();

} catch (FileNotFoundException e) {
// TODO
e.printStackTrace();
} catch (IOException e) {
// TODO
e.printStackTrace();
}

}

要保存音频：-

public void save() throws IOException {
Random r = new Random();
final int i1 = r.nextInt(80 - 65) + 65;
File tempfile2=new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Voice Changer/temp/"+i1+filename+".wav");
savedfile=Environment.getExternalStorageDirectory().getAbsolutePath()+"/Voice Changer/"+"VOICE CHANGER"+i1+filename+".mp3";



Toast.makeText(this, "File Saved", Toast.LENGTH_SHORT).show();

rawToWave(tempfile,tempfile2);
File wavFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Voice Changer/temp/"+i1+filename+".wav");
IConvertCallback callback = new IConvertCallback() {
@Override
public void onSuccess(File convertedFile) {
File newfile=new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Voice Changer/"+"VOICE CHANGER"+i1+filename+".mp3");
File savedmp3=new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Voice Changer/temp/"+i1+filename+".mp3");
Toast.makeText(MainActivity.this, "SUCCESS: " + newfile.getPath(), Toast.LENGTH_LONG).show();
try {
copyit(savedmp3,newfile);
} catch (IOException e) {
e.printStackTrace();
}
}
@Override
public void onFailure(Exception error) {
Toast.makeText(MainActivity.this, "ERROR: " + error.getMessage(), Toast.LENGTH_LONG).show();

}
};
Toast.makeText(this, "Converting audio file...", Toast.LENGTH_SHORT).show();
AndroidAudioConverter.with(this)
.setFile(wavFile)
.setFormat(cafe.adriel.androidaudioconverter.model.AudioFormat.MP3)
.setCallback(callback)
.convert();


}

输出将是一个.mp3文件。如果要快速输出，可以使用.wav格式。