float[] H={1,2,3}; float[] F={2,1,3}; float[] r={1,2,3,4,1,2}; int N=2;
    public void init( /* int N,float[] H,float[] F */) {		  float[] H={1,2,3};          float[] F={2,1,3};	  float[] r={1,2,3,4,1,2};	  int N=2;  	add (new source(r));	add (new FIR(H));	add (new DownSamp(N));	add (new UpSamp(N));	add (new FIR(F));	add (new sink(r.length));    }