/**
 * Create a 1 second echo in the sound
 * 
 * @author Pat Troy: troy AT uic DOT edu
 */

import java.awt.Color;

// Note the name of the class in the following line MUST
// match the name of the file. 
public class Lect1123d
{
  
  public static void main (String[] args) 
  {
    String fname = FileChooser.pickAFile();
    //System.out.println (fname);
    
    Sound s1 = new Sound (fname);
    
    System.out.println ("Number of samples in the sound: " + s1.getLength());
    System.out.println ("Number of samples per second: " + s1.getSamplingRate());
    
    double lengthInSeconds = s1.getLength() / s1.getSamplingRate();
   
    System.out.println ("The length in seconds of the sound: " + lengthInSeconds);
    
   
    Sound s3;
    s3 = createEcho (s1, 0.5);
    
    s3.explore();
    
 
   
  }
  
  public static Sound createEcho (Sound s1, double echoDelay)
  {
    SoundSample sampArr1[] = s1.getSamples();
    SoundSample samp1;
    int index;
    int sampVal1;
    
    int length3;
    
    // increase the pitch by 9-10ths
    length3 = sampArr1.length + (int)(s1.getSamplingRate() * echoDelay);
    
    Sound s3 = new Sound(length3);
    SoundSample sampArr3[] = s3.getSamples();
    SoundSample samp3;
    int sampVal3;
    int index2;
    
    System.out.println ("Number of samples in the sound: " + sampArr3.length + ", " + length3);
    for ( index = 0 ; index < sampArr1.length ; index++ )
    {
      samp1 = sampArr1[index];
      sampVal1 = samp1.getValue();
     
      sampVal3 = sampVal1;
      
      // store the new sample value into the array for s3
      samp3 = sampArr3[index];
      samp3.setValue(sampVal3);
    }
    
    SoundSample samp2;
    
    for ( index = 0 ; index < sampArr1.length ; index++ )
    {
      samp1 = sampArr1[index];
      sampVal1 = samp1.getValue();
     
      index2 = index + (int)(s1.getSamplingRate() * echoDelay);
      samp3 = sampArr3[index2];
      sampVal3 = samp3.getValue();
      
      sampVal3 = sampVal3 + (sampVal1 / 2);
      // store the new sample value into the array for s3
      samp3.setValue(sampVal3);
    }
    
    return s3;
  }
  
 
    
} // end of class