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Android: Voice Recording and saving audio

I am working on application that will record the voice of the user and save the file on the SD card and then allow the user to listen to the audio again.

I am able to allow the user to record his voice using the RecognizerIntent, but I cant figure out how to save the audio file and allow the user to hear the audio. I would appreciate it if someone could help me out. I have displayed my code below:

    // Setting up the onClickListener for Audio Button
    attachVoice = (Button) findViewById(R.id.AttachVoice_questionandanswer);
    attachVoice.setOnClickListener(new OnClickListener() {
        public void onClick(View v) {
        Intent voiceIntent = new Intent(RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
        voiceIntent.putExtra(RecognizerIntent.EXTRA_LANGUAGE_MODEL, RecognizerIntent.LANGUAGE_MODEL_FREE_FORM);
        voiceIntent.putExtra(RecognizerIntent.EXTRA_PROMPT, "Please Speak");
        startActivityForResult(voiceIntent, VOICE_REQUEST);
        }
    });

protected void onActivityResult(int requestCode, int resultCode, Intent data) {


  if(requestCode == VOICE_REQUEST && resultCode == RESULT_OK){




}
like image 238
RagHaven Avatar asked Jun 05 '12 21:06

RagHaven


People also ask

How do I save a voice recording on my Android?

Android provides MediaRecorder class to record audio or video. In order to use MediaRecorder class ,you will first create an instance of MediaRecorder class. Its syntax is given below. MediaRecorder myAudioRecorder = new MediaRecorder();

Where do voice recordings get saved on Android?

Recordings can be found under: settings/device maintenance/memory or storage.

Does Android have built in audio recorder?

Yes, your Android phone has a built-in voice recorder app. You can find it by searching for Sound Recorder in your apps. Swipe up from your phone's home screen if you're using an older version of Android.


2 Answers

There is an example of how to do audio capture using MediaRecorder in the Android Developer Documentation.

I would recommend saving the files on the SD Card and then have your gallery code check the SD card to see which files to display. You can get the directory of the SD Card using the Environment.getExternalStorageDirectory() method. It would be best to save your files in a subdirectory of the SD Card root directory.

Make sure you give your applications the Permissions it will need. At the very least it will need RECORD_AUDIO and WRITE_EXTERNAL_STORAGE.

Also you have to see these tutorials:

http://www.androiddevblog.net/android/android-audio-recording-part-1

http://www.androiddevblog.net/android/android-audio-recording-part-2

like image 117
K_Anas Avatar answered Oct 08 '22 13:10

K_Anas


If you really want to record audio via the speech recognition API then you could use the RecognitionService.Callback which has a method

void bufferReceived(byte[] buffer)

This gives you access to the recorded audio buffer as speech is being recorded and recognized. (No information is provided about the sample rate though.) You can then save the obtained buffers into a file for a later playback. I think keyboard apps use this call to display the waveform of the recorded speech. You have to implement the UI yourself.

The bare RecognizerIntent.ACTION_RECOGNIZE_SPEECH just returns a set of words/phrases without any audio.

like image 29
Kaarel Avatar answered Oct 08 '22 12:10

Kaarel