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

Echo Cancellation

Removing echo in telecommunications.

Mohith N

Updated: 19 March 2026

12 min read

Echo Cancellation Quiz

Test your grasp of adaptive echo cancellation in telecommunications systems.

Question 1 of 3

Q1.In a telephone network echo canceller, the adaptive filter models the impulse response of:

Adaptive Filter Basics

Concept of adjustable coefficients.

4 min read

LMS Algorithm

Least Mean Squares update rule, convergence.

12 min read

RLS Algorithm

Recursive Least Squares overview.

7 min read

Filter Types

LPF, HPF, BPF, BSF, Allpass.

10 min read

Chebyshev Filters

Type I and Type II ripple.

12 min read

Noise Cancellation

Channel Equalization

Contents

Echo Cancellation

Echo Cancellation Quiz

Q1.In a telephone network echo canceller, the adaptive filter models the impulse response of:

Related Articles

Adaptive Filter Basics

LMS Algorithm

RLS Algorithm

Filter Types

Chebyshev Filters