Android語音通話錄音問題....不能正常工作與audiosource.voicecall

我想在android的通話記錄。我有以下代碼，當我使用 MediaRecorder.AudioSource.VOICE_DOWNLINK | MediaRecorder.AudioSource.VOICE_UPLINK正在錄製通話，但播放時無法理解。如果使用相同的代碼AudioSouce.MIC
然後錄製的文件是可以理解的。這裏是我的代碼Android語音通話錄音問題....不能正常工作與audiosource.voicecall

package com.example.callrecoder; 

import java.io.File; 
import java.io.IOException; 

import android.media.MediaRecorder; 
import android.os.Bundle; 
import android.os.Environment; 
import android.app.Activity; 
import android.content.DialogInterface; 
import android.content.DialogInterface.OnClickListener; 
import android.view.Menu; 
import android.view.View; 
import android.widget.Button; 

public class MainActivity extends Activity { 


    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     final Button record_call = (Button)this.findViewById(R.id.record); 
     final Button stop_recorder = (Button)this.findViewById(R.id.stop); 
     final MediaRecorder _recorder = new MediaRecorder(); 
     record_call.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       //MediaRecorder _recorder = new MediaRecorder(); 



        try { 
         String state = android.os.Environment.getExternalStorageState(); 
         /* if (!state.equals(android.os.Environment.MEDIA_MOUNTED)) { 
          throw new IOException("SD Card is not mounted. It is " + state 
            + "."); 
         } 

         // make sure the directory we plan to store the recording in exists 
         File directory = new File(Environment.getExternalStorageDirectory().getAbsolutePath() 
           + "/sam.wav").getParentFile(); 
         if (!directory.exists() && !directory.mkdirs()) { 
          throw new IOException("Path to file could not be created."); 
         }*/ 


         //_recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_CALL); 
         _recorder.setAudioSource(MediaRecorder.AudioSource.VOICE_DOWNLINK | MediaRecorder.AudioSource.VOICE_UPLINK); 
         _recorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT); 
         _recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT); 
         //_recorder.setOutputFile(Environment.getExternalStorageDirectory().getAbsolutePath() 
         //  + "/test.wav"); 
         _recorder.setOutputFile("/sdcard/sample.3GPP"); 
         _recorder.prepare(); 
         _recorder.start(); 

        } catch (Exception e) { 
         e.printStackTrace(); 
        } 
       } 


     }); 
     stop_recorder.setOnClickListener(new View.OnClickListener() { 

      public void onClick(View v) { 
       // TODO Auto-generated method stub 
       try 
       { 
        _recorder.stop(); 
        _recorder.reset(); 
        _recorder.release(); 
       } 
       catch (Exception e) { 
        // TODO: handle exception 
        e.printStackTrace(); 
       } 


       //_recorder = null; 

      } 
     }); 
    } 

    public void onClick(DialogInterface dialog, int which) { 
     // TODO Auto-generated method stub 

    } 




}

我想記錄與AudioSource.downlink和上行鏈路的呼叫。 PLZ幫我解決了這個問題。我在Samsang Galaxay Gio手機上測試它。

來源

2012-12-07 M Asim

你說的「不理解」是什麼意思？它以錯誤的速度播放？或者聽起來像隨機垃圾？當您錄製語音電話時，您很可能會獲得AMR編碼的數據，因此您使用的播放器可能存在AMR音頻問題？順便說一句，你應該使用VOICE_CALL，你想要上行鏈路和下行鏈路（儘管不是所有的設備都支持這一點）。 VOICE_UPLINK | VOICE_DOWNLINK不等於VOICE_CALL，因爲這些不是位掩碼。 – Michael

AMR編碼數據意味着什麼？ –

我的意思是用[AMR編解碼器]編碼的數據（http://en.wikipedia.org/wiki/Adaptive_Multi-Rate_audio_codec） – Michael

VOICE_CALL的insted的使用VOICE_RECOGNITION ,,,

callRecorder = new MediaRecorder();           
callRecorder.reset();              
callRecorder.setAudioSamplingRate(8000);          
callRecorder.setAudioEncodingBitRate(12200);         
callRecorder.setAudioSource(MediaRecorder.AudioSource.VOICE_RECOGNITION); 
callRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);   
callRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);

來源

2017-08-02 06:42:00

Android語音通話錄音問題....不能正常工作與audiosource.voicecall

回答

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