记录/保存的语音识别意图音频 [英] record/save audio from voice recognition intent

问题描述

在问这个问题，我检查了所有计算器与此相关的问题，其他线程没有成功，所以，请不要链接到其他线程的回答，：）

Before asking this question, I checked all stackoverflow other threads related to this issue without any success, so please, don't answer with links to other threads, :)

我想保存/记录，谷歌用于语音到文本操作（使用RecognizerIntent或SpeechRecognizer）识别服务的音频

I want to save/record the audio that google recognition service used for speech to text operation (using RecognizerIntent or SpeechRecognizer).

我经历了很多的想法：

1. 从RecognitionListener onBufferReceived：我知道，这是行不通的，只是测试一下，看看发生了什么，onBufferReceived不会被调用
（符合JB 4.3测试了Galaxy Nexus的）
2. 在使用的媒体记录器：不工作。它打破语音识别。只允许话筒一个操作
3. 在试图寻找其中，识别服务是节约的讲话执行前临时音频文件为文本的API来复制它，但都没有成功

1. onBufferReceived from RecognitionListener: I know, this is not working, just test it to see what happens and onBufferReceived is never called (tested on galaxy nexus with JB 4.3)
2. used a media recorder: not working. it's breaking speech recognition. only one operation is allowed for mic
3. tried to find where recognition service is saving the temporary audio file before the execution of the speech to text api to copy it, but without success

我几乎绝望了，但我只注意到谷歌保持应用程序在做什么，我需要做的!!!!我debuged了一点保持应用程序中使用的logcat和应用程序也被调用RecognizerIntent.ACTION_RECOGNIZE_SPEECH（就像我们，开发商做）来触发语音到文本。但是，如何让被保存音频？可以说，它是一个隐藏的API？是谷歌欺骗:)？

I was almost desperate but I just noticed that google keep application is doing what I need to do!!!! I debuged a little the keep application using logcat and the app is also calling the "RecognizerIntent.ACTION_RECOGNIZE_SPEECH" (like we, developers, do) to trigger speech to text. but, how keep is saving the audio? can it be a hide api? is google "cheating" :) ?

感谢您的帮助

最好的问候

推荐答案

@ Kaarel的回答几乎是完整的 - 所产生的声音是在 intent.getData（）键，可读取使用 ContentResolver的

@Kaarel's answer is almost complete - the resulting audio is in intent.getData() and can be read using ContentResolver

不幸的是，返回的AMR文件是低质量 - 我没能找到一种方式来获得高品质录音。我想除了音频/ AMR以外的任何值返回的空intent.getData（）。

Unfortunately, the AMR file that is returned is low quality - I wasn't able to find a way to get high quality recording. Any value I tried other than "audio/AMR" returned null in intent.getData().

如果你找到一种方式来获得高品质录音 - ！请评论或添加答案

If you find a way to get high quality recording - please comment or add an answer!

public void startSpeechRecognition() {
   // Fire an intent to start the speech recognition activity.
   Intent intent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
   // secret parameters that when added provide audio url in the result
   intent.putExtra("android.speech.extra.GET_AUDIO_FORMAT", "audio/AMR");
   intent.putExtra("android.speech.extra.GET_AUDIO", true);

   startActivityForResult(intent, "<some code you choose>");
}

// handle result of speech recognition
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    // the resulting text is in the getExtras:
    Bundle bundle = data.getExtras();
    ArrayList<String> matches = bundle.getStringArrayList(RecognizerIntent.EXTRA_RESULTS)
    // the recording url is in getData:
    Uri audioUri = data.getData();
    ContentResolver contentResolver = getContentResolver();
    InputStream filestream = contentResolver.openInputStream(audioUri);
    // TODO: read audio file from inputstream
}

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