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A ROBUST DIGITAL IMAGE WATERMARKING BASED ON JOINT DWT AND DCT
ABSTRACT
The authenticity & copyright protection are two major problems in handling digital multimedia. The Image watermarking is most popular method for copyright protection by discrete Wavelet Transform (DWT)...
An Implementation of Audio Noise Reduction from Audio Signals and Speech Signals Using Wavelet Transform
ABSTRACT
Speech signal analysis is one of the important areas of research in multimedia applications. Discrete Wavelet technique is effectively reduces the unwanted higher or lower order frequency components in a speech signal. Wavelet-based...
MATLAB Code for Ploting Magnitude, Angle, Real, and Imaginary parts of a Signal
Evaluate e^jw/(e^jw-0.5) at 501 equispaced points between [0,pi] and
plot its magnitude, angle, real, and imaginary parts.
%%%%%%%%%%% START %%%%%%%%%%%%%%%clc; w = [0:1:500]*pi/500; X = exp(j*w) ./ (exp(j*w) - 0.5*ones(1,501)); magX = abs(X); angX...
MATLAB Code for Sampling of Signal
MATLAB Code for Sampling of Signal %%%%%%%%%%% START %%%%%%%%%%%%%%%clc;% Analog Signal Dt = 0.00005; t = -0.005:Dt:0.005; xa = exp(-1000*abs(t));% Discrete-time Signal Ts = 0.0002; n = -25:1:25; x = exp(-1000*abs(n*Ts));% Discrete-time...
MATLAB Code for OFDM Using Convolutional coding
This project is based on generation of OFDM using Convolutional coding. Modulation technique used on this method is 16-QAM Modulation. Output of this project is shown above also SNR is calculated.
% OFDM Code% No.of Carriers: 64% coding used: Convolutional...
