Title :
Precise variable-Q filter design [DSP Tips & Tricks]
Author :
Engelberg, Shlomo
Author_Institution :
Electron. Dept., Jerusalem Coll. of Technol., Jerusalem
fDate :
9/1/2008 12:00:00 AM
Abstract :
In this article, it describe two ways to implement a variable-Q digital filter. First, present a simple variable-Q filter and then illustrate why its frequency response is less than ideal. Next, show a trick to modify that filter, making its performance nearly ideal. As always, the choice of which filter to use is made based on the user´s application.
Keywords :
Q-factor; band-pass filters; digital filters; frequency response; frequency response; user application; variable-Q digital filter; Adaptive filters; Band pass filters; Digital filters; Digital signal processing; Feedback; Filtering theory; Frequency response; Passband; Signal design; Transfer functions;
Journal_Title :
Signal Processing Magazine, IEEE
DOI :
10.1109/MSP.2008.927303
