	   ( Box)

  ,   
         
,     
. 

   ,     
     "   2"   
  ()   

,     ,  
     ,  
   (.  6.2). 

    :
Solid red (thick) 	 ():   
		+eq+ .
Grey (thick)	 ():   .
 
      .
*Stepsize	 
	 , . .,     
	    ,   0  10 %.
*Live update	 
	   ,   , 
	     .
Lowpass
	      , 
	   .
*Fc	F 
	   
*Order
	  (0-8)
*Butterworth/Linkwitz/Flat delay/Valiable slope	
	// -/ 
	   : Butterworth (-3dB Fc),  Linkwitz-Riley (-6dB Fc) 
	 (flat delay)   . 
	    ,   ,      
	,   ,  .    
	       0  180 , 
	     Linkwitz-Riley.   , 
	     90  270 ,  
	 ,     Butterworth. 
	        , 
	 ,     (flat delay),  
	 .  ,   
	 (Bessel), .   (variable slope),  
	 ,      
	    /,    , 
	  .

Highpass	 
	      , 
	   ,   . .

Optimize	
	  ,    

Optimization range	 
	    ,    
	   ,   , , 
	    ,   
	  .     
	,      ,   
	,         
	 20- 25- dB   . 
 
Target SPL	 SPL
	    SPL ,   
	    ,    
	  -  .   
	   SPL    
	  .

        Browse. 
   -    ASCII   
   . 
     :
20      0
50      0
100  - 3
500  - 3
  ,     
  3- dB    50.    Reload 
(),   .   Flat target ( ) 
,     .    
     ,     . 

Passband slope	  
	        
	 - / + 2dB  .   ,   , 
	     ,    
	        .
Target error (Error)		  ()
	         
	,    ,  ,    
	      . 
	   ,  (), .   
	   ,    . 
	    ,     
	  .
