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POLatency in playing a .wav/.mp3/.ogg audio file in Android App
 

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  1. POLatency in playing a .wav/.mp3/.ogg audio file in Android App
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    <p>I'd written an application for playing 20 millisecond audio clip(.wav format). It simply plays the sound clip repeatedly 1000 times.</p> <p>But due to Latency, number of times it plays lies between 978 and 984. I'd also tried other audio format(.ogg, .mp3, etc).</p> <p>I want reduce the latency and also to get reliable number.</p> <p>I'm sharing my code below:</p> <pre><code>package com.abhinav.soundlooper; import android.media.MediaPlayer; import android.os.Bundle; import android.os.CountDownTimer; import android.app.Activity; import android.util.Log; import android.view.KeyEvent; import android.view.Menu; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.TextView; public class MainActivity extends Activity implements OnClickListener { Button btnStart; TextView tvPause, tvLoop; EditText etPause, etLoop; long pause, loop; private CountDownTimer timer; MediaPlayer mp; public Thread t; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); btnStart = (Button) findViewById(R.id.btnStart); // tvLoop = (TextView) findViewById(R.id.etLoop) etPause = (EditText) findViewById(R.id.etPause); etLoop = (EditText) findViewById(R.id.etLoop); btnStart.setOnClickListener(this); mp = MediaPlayer.create(getApplicationContext(), R.raw.beepwav); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.main, menu); return true; } @Override public boolean onKeyDown(int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK &amp;&amp; event.getRepeatCount() == 0) { finish(); return true; } return super.onKeyDown(keyCode, event); } @Override public void onClick(final View v) { // TODO Auto-generated method stub // pause = Integer.valueOf(etPause.getText().toString()) + 1 ; // loop = 1 + Integer.valueOf(etLoop.getText().toString()); // long ti = (pause+30); // long tt = ti*loop; timer = new CountDownTimer(30000, 30) { int i =0; public void onTick(long millisUntilFinished) { // v.playSoundEffect(android.view.SoundEffectConstants.CLICK); mp.start(); // try { // timer.wait(10); // } catch (InterruptedException e) { // // TODO Auto-generated catch block // e.printStackTrace(); // } i++; } public void onFinish() { // mTextField.setText("done!"); Log.i("loop", ""+i); stopAll(); // mp.stop(); // mp.release(); } }.start(); // } protected void stopAll() { // TODO Auto-generated method stub timer.cancel(); } } </code></pre>
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