/* Generate a 452.8 Hz sine wave. ./goertzel | aplay */
#include <stdio.h>

int main()
{
  int s = 0, t = 32;
  for (; EOF != putchar(s + 128);) {
    int tmp = s;
    s += s;
    s -= s >> 4;
    s -= t;
    t = tmp;
  }
}