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MATLAB Code % The code is developed by SalimWireless.com clc; clear; close all; % Input Signal and Parameters Fs = 1000; % Sampling frequency t = 0:1/Fs:0.3; % Time vector x = cos(2*pi*200*t) + randn(size(t)); % Signal: 200 Hz cosine + noise % Welch's Method Parameters segmentLength = 256; % Length of each segment overlapFraction = 0.5; % Fractional overlap (50%) overlapSamples = floor(segmentLength * overlapFraction); % Overlap in samples step = segmentLength - overlapSamples; % Step size N = length(x); % Length of the input signal % Define Hann Window hannWindow = 0.5 * (1 - cos(2 * pi * (0:segmentLength-1)' / (segmentLength - 1))); windowEnergy = sum(hannWindow.^2); % Normalization factor % Segment the Signal into Overlapping Windows numSegments = floor((N - overlapSamples) / step); % Number of segments segments = zeros(segmentLength, numSegments); for i = 1:numSegments startIdx = (i - 1) * step + 1; endIdx = star...