/* Acoustic echo simulator, main C++ program.
   Compatible with STK version 4.2.1.
   Usage: main inputsoundfile
   Writes main.wav as output soundfile
 */

#include "FileWvIn.h"  /* STK soundfile input support */
#include "FileWvOut.h" /* STK soundfile output support */

static const int M = 20000; /* echo delay in samples */
static const int g = 0.8;   /* relative gain factor */

#include "delayline.c" /* defined previously */

int main(int argc, char *argv[])
{
  long i;
  Stk::setSampleRate(FileRead(argv[1]).fileRate());
  FileWvIn input(argv[1]);  /* read input soundfile */
  FileWvOut output("main"); /* creates main.wav */
  long nsamps = input.getSize();
  for (i=0;i<nsamps+M;i++)   {
    StkFloat insamp = input.tick();
    output.tick(insamp + g * delayline(insamp));
  }
}