• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

properties of filters

Status
Not open for further replies.

omeganeu

New Member
Hi
can any one explain to me the meaning of these words:
steepness, roll-off, decade, octave, filter order .... and how they are related to each other.
thanks
ω
 

microtexan

New Member
I would expect that they are all in the Glossary of your textbook.
 

dknguyen

Well-Known Member
Most Helpful Member
Steepness and roll-off are the same thing. It's the slope of how much supression changes as the frequency changes. THe slope is not necessarily linear.
Decade is every 10x step change in frequency (4, 40, 400 or 1, 10, 100, 1000). It is logarithimic base 10 scale.
Octave is every 2x change in frequency. (4, 8, 16, 32 or 1, 2, 4, 8). It is logarithmic base 2 scale.
Filter Order is how many single-pole filters are cascaded to get the equivelant response of your current filter.

You can actually wiki all this stuff...except for steepness and rollf off. THose are buried in the wiki pages talking about filters in general.
 
Last edited:
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading

 
Top