DSP

Discrete Signals

Discrete Time Signals Standard Sequences LTI Systems Convolution Sum Difference Equations Correlation

Z-Transform

Z-Transform Definition Properties of ROC Inverse Z-Transform Transfer Function System Response

DFT & FFT

DTFT Overview DFT Basics Properties of DFT Circular vs Linear FFT Algorithms Computations in FFT Goertzel Algorithm

FIR Filters

Filter Types FIR Characteristics FIR Filter Design Window Functions Kaiser Window FIR Structures

IIR Filters

IIR Basics Impulse Invariance Bilinear Transform Butterworth Filters Chebyshev Filters IIR Structures

Multirate DSP

Decimation Interpolation Sampling Rate Conversion Polyphase Decomposition Filter Banks

Adaptive Filters

Adaptive Filter Basics LMS Algorithm RLS Algorithm Noise Cancellation Echo Cancellation Channel Equalization

DSP Applications

Speech Processing Basics Image Processing Basics Audio Compression Radar Signal Processing

IIR Basics

Feedback, infinite impulse response.

Darshan N

Updated: 19 March 2026

8 min read

IIR Basics Quiz

Test your knowledge on this topic!

Question 1 of 3

Q1.What specific structural element inherently gives an IIR filter an infinite duration impulse response?

IIR Structures

Direct Form I/II, Parallel, Cascade.

4 min read

Butterworth Filters

Maximally flat response design.

5 min read

Chebyshev Filters

Type I and Type II ripple.

12 min read

Bilinear Transform

Frequency warping, pre-warping.

5 min read

FIR Characteristics

Linear phase, stability, implementation.

5 min read

FIR Structures

Impulse Invariance

Contents

IIR Basics

IIR Basics Quiz

Q1.What specific structural element inherently gives an IIR filter an infinite duration impulse response?

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IIR Structures

Butterworth Filters

Chebyshev Filters

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