Bad sound quality when recording/playing sounds - Android SDK

Question

I have a problem, when I try to record and then play the file that was just recorded. I can both record and play the sound but the quality stinks. Its not just bad is really hard to listen to and sound a bit like its a computer generated voice. I use the andriod SDK-emulator. The code that sets up the recording looks like this;

MediaRecorder recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.RAW_AMR);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setOutputFile(path);
recorder.prepare();
recorder.start();

And the code playing the file later looks like this;

MediaPlayer mp = new MediaPlayer();
mp.reset();
mp.setDataSource(path);
mp.prepare();
mp.start();

I don't know what part that makes the audio file sound really bad or if its just the emulator that makes it bad and that it would work on a real phone.

Answer 1

Try these

recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);   
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);     
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);   
recorder.setAudioChannels(2);
recorder.setAudioEncodingBitRate(128);
recorder.setAudioSamplingRate(44100);

Incase if you find this code crash on low end android devices then try removing setAudioChannels and setAudioSamplingRate.