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IIR Filter Design


This section presents functions primarily for converting analog prototype filter transfer functions into digital filter transfer function. Functions for finding the complex gain of a digital filter and for performing filtering of a signal are also included.

IIR FILTER DESIGN

Filter Conversion Functions
fn2dlp Converting From A Normalized To Digital Lowpass Filter [O-Matrix function]
fn2dhp Converting From A Normalized To Digital Highpass Filter
fn2dbp Converting From A Normalized To Digital Bandpass Filter [O-Matrix function]
fn2dbs Converting From A Normalized To Digital Bandstop Filter
fc2dig Converting From A Continuous To Digital Filter [O-Matrix Function]

Other Related Functions
iirfilt1 Filtering With a DIRECT FORM I IIR
gainz Complex Gain of a Rational Digital Transfer Function

Design Tools
makeiir IIR Filter Design Tool