如何检测android语音是离线还是在线

Question

我按照这个问题在android上做离线演讲
我在谷歌语音中下载了该语言，它可以离线工作
问题是，我想知道它当前在离线或在线语音上运行(就像苹果语音对文本一样，有一个api可以检查(，以便在我的应用程序中正确显示语音流
我想知道有没有这样的方法
这是我的代码：

val intentSpeech =  Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
intentSpeech.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, "en-US")
intentSpeech = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
intentSpeech.putExtra(RecognizerIntent.EXTRA_PARTIAL_RESULTS, true);
intentSpeech.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM)
intentSpeech.putExtra(RecognizerIntent.EXTRA_CALLING_PACKAGE,
packageName)
val recognizer = SpeechRecognizer.createSpeechRecognizer(this)
recognizer.setRecognitionListener(this)

p/s：我可以看到谷歌的Read Along应用程序在离线或在线模式下都能完美工作
我正在尝试对android语音api进行同样的操作。有可能吗？

Answer 1

对于离线语音到文本，您可以使用谷歌的默认STT模型，但它似乎是不连续的。

private fun startSpeechToText() {
val speechRecognizer = SpeechRecognizer.createSpeechRecognizer(this)
val speechRecognizerIntent = Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH)
speechRecognizerIntent.putExtra(
RecognizerIntent.EXTRA_LANGUAGE_MODEL,
RecognizerIntent.LANGUAGE_MODEL_FREE_FORM
)
speechRecognizerIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE, Locale.getDefault())
speechRecognizer.setRecognitionListener(object : RecognitionListener {
override fun onReadyForSpeech(bundle: Bundle?) {}
override fun onBeginningOfSpeech() {}
override fun onRmsChanged(v: Float) {}
override fun onBufferReceived(bytes: ByteArray?) {}
override fun onEndOfSpeech() {}
override fun onError(i: Int) {}
override fun onResults(bundle: Bundle) {
val result = bundle.getStringArrayList(SpeechRecognizer.RESULTS_RECOGNITION)
if (result != null) {
// result[0] will give the output of speech
}
}           
override fun onPartialResults(bundle: Bundle) {}
override fun onEvent(i: Int, bundle: Bundle?) {}
})  
// starts listening ...
speechRecognizer.startListening(speechRecognizerIntent)

}

如果你不想使用谷歌，因为它需要下载语音到文本的离线模型。

离线STT的另一个选择是Vosk API，因为它为现场STT提供了英语和其他语言的预训练模型。

https://github.com/alphacep/vosk-android-demo

参考：https://www.geeksforgeeks.org/offline-speech-to-text-without-any-popup-dialog-in-android/