javaaudioaudio-analysis

How Can i extract numeric values from an audio file in java


I need to do an analysis on sounds to check if it was hampered or deleted.

import java.net.URL;
import javax.swing.*;
import javax.sound.sampled.*;

public class LoopSounds {

    public static void main(String[] args) throws Exception {
        URL url = new URL(
            "http://pscode.org/media/leftright.wav");
        Clip clip = AudioSystem.getClip();
        AudioInputStream ais = AudioSystem.
            getAudioInputStream( url );
        clip.open(ais);

        URL url2 = new URL(
            "http://pscode.org/media/100_2817-linear.wav");
        Clip clip2 = AudioSystem.getClip();
        AudioInputStream ais2 = AudioSystem.
            getAudioInputStream( url2 );
        clip2.open(ais2);

        // loop continuously
        clip.loop(Clip.LOOP_CONTINUOUSLY);
        clip2.loop(Clip.LOOP_CONTINUOUSLY);
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                // A GUI element to prevent the Clip's daemon Thread
                // from terminating at the end of the main()
                JOptionPane.showMessageDialog(null, "Close to exit!");
            }
        });
    }
}

But I would be doing a comparison between two sounds, and I need to extract the numeric values for my analysis.


Solution

  • AudioInputStream has a read() method.

    You may make a function like this:

    public void compareVoices(AudioInputStream ais,AudioInputStream ais2){
        for(int i = 0;i>ais.getFrameLength;i++){
            if(ais.read()!=ais2.read()){
                return(false);
            }
        }
        return(true);
    }
    

    Note: This function will work just if these two .wav files are exactly the same.