Test Your EQ (Engineering Quotient)

EQ #33

Does the fact that the finite resolution of digital arithmetic effectively truncates the impulse response of an IIR filter turn it into an FIR filter?

While it’s technically true that the impulse response of an IIR filter implemented, say, with fixed-point arithmetic is effectively finite, this has no real bearing on its classification in terms of either its design or application. It’s still an IIR filter for all practical purposes.


Don't miss out on upcoming issues of Circuit Cellar. Subscribe today!

 
 
Note: We’ve made the October 2017 issue of Circuit Cellar available as a free sample issue. In it, you’ll find a rich variety of the kinds of articles and information that exemplify a typical issue of the current magazine.


Would you like to write for Circuit Cellar? We are always accepting articles/posts from the technical community. Get in touch with us and let's discuss your ideas.