#include <iostream>
  #include "wavdata.h"
  #include "fft.h"
  #include <math.h>
  
  #define DELAY 5000
  #define AMPLITUDE 0.5
  
  int main(int argc, char **argv)
  {
  	WavData w;
  	w.load("COW.WAV");
  
  	char *data = w.data();
  	char *data2 = new char[w.datasize()*2];
  
  	int i;
  	for(i=0;i<w.datasize();i++){
  		data2[i]=data[i];
  		printf("%d ",data[i]);}
  	for(;i<w.datasize()*2;i++)
  		data2[i]=128;
  
  	for(int i=DELAY;i<2*w.datasize();i++)
  	{
  		float value = (float)(unsigned char)data2[i-DELAY]-128.0;
  		value = value * AMPLITUDE;
  		int val = (unsigned int)value + (unsigned char)data2[i];
  		if(val>255)val=255;
  		if(val<0)val=0;
  
  		data2[i]= (unsigned char)(unsigned int)val;
  	}
  
  	w.clearData();
  	w.setDatasize(w.datasize()*2);
  	w.setData(data2);
  
  	w.save("COW_d.WAV");
  }