www.pudn.com > lib.zip > equalize.h

struct equalizer 
  { equalizer(float d)		  { delta = d; reset(); } 
    void reset(); 
    void insert(complex);				  /* put new raw value into equalizer		    */ 
    complex get();					  /* get equalized value			    */ 
    void update(complex eps)	   { upd(eps, np); }	  /* given eps, update coeffs			    */ 
    void short_update(complex eps) { upd(eps, 2);  }	  /* ditto, use short window	// WAS 1	    */ 
    int getdt();					  /* get timing offset				    */ 
    void shift(int);					  /* shift coefficients vector			    */ 
    void print(char*);					  /* print coefficients vector			    */ 
 
private: 
    void upd(complex, int); 
    const int size = 16;				  /* power of 2 .ge. (2*np+1)			    */ 
    const int np = 7;					  /* np to the left of me, np to the right of me    */ 
    complex coeffs[2*np+1];				  /* vector of coefficients			    */ 
    complex in[size];					  /* circular buffer				    */ 
    int next;						  /* ptr to next place to insert		    */ 
    float delta; 
  };