Alesis DEQ230D Manual Do Utilizador

Basics of Equalization 

 

In the next illustration, the difference between a narrow Q and a 

wide Q is seen:  

 

 

Now we're ready for a visual definition of  the term Variable Q. In 

the next illustration, the wider and more gradual curve represents a 

lower gain setting for a variable Q equalizer. The narrower and 

more steep curve represents a higher gain setting at the same 

frequency:  

 

 

 

 

 

 

 

 

 

 

 

 

The previous illustration has been exaggerated somewhat to make 

the point, but you can see how a lower gain setting also boosts 

frequencies that overlap to some extent into the regions affected 

by the next highest and lowest frequency band controls.  

 

 

In contrast, a Constant Q equalizer has a more consistent range of  

frequencies under its control throughout its cut/boost range, as 

illustrated below: