Online Signal Processing Simulations

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Interactive WSS Simulator Online

WSS Simulator | Wide Sense Stationary & LTI System Analysis Wide Sense Stationary (WSS) Simulator Explore the statistical properties of random processes through LTI systems with real-time autocorrelation analysis. ⚙️ Signal Parameters Samples (100 - 5k) Input Distribution WSS (Gaussian) Noisy Sinusoid Uniform Noise Laplace Noise Binary Noise Pink Noise ...

Similarity Matrix in Machine Learning Explained

The technique used here is generally called Similarity-Based Recommendation or Nearest-Neighbor Recommendation . The matrix itself is called a Similarity Matrix . The fact that it is stored as a Compressed Sparse Matrix is an implementation detail used to save memory and improve performance. 1. Similarity Matrix (Core ML Concept) A similarity matrix stores how similar every pair of movies is. Avatar Titanic Alien Avatar 1.00 0.42 0.87 Titanic 0.42 1.00 0.21 Alien 0.87 0.21 1.00 Each value represents the similarity between two movies. 1.0 = Identical movie (itself) 0.9 = Very similar 0.5 = Moderately similar 0.1 = Barely similar 0.0 = Not similar Similarity matrices are commonly used in: Content-Based Filtering Item-Based Collaborative Filtering k-Nearest Neighbors (k-NN) Recommendation Systems 2. Compressed Sparse Matrix (Storage Technique) A Sparse Ma...

Interactive QPSK Simulation Online

QPSK Modulation Lab Digital Signal Processing Simulator System Parameters Input Bitstream (Dibits) Carrier Frequency ($f_c$) 5 Hz Symbol Rate ($R_s$) 1 Baud Signal Amplitude ($A$) 1.0 Quadrature Phase Shift Keying (QPSK) transmits 2 bits per symbol by shifting the phase of a carrier into one of four states: 45°, 135°, 225°, or 315°. $$ I_k, Q_k = \text{Map}\{b_{2k}, b_{2k+1}\} \in \left\{ \pm \frac{1}{\sqrt{2}} \right\} $$ The factor \( \tfrac{1}{\sqrt{2}}...

Interactive VCO Simulator Online

UNIVERSAL VCO LABORATORY Voltage-to-Frequency Transformation Engine FIXED PITCH GEN FM SIGNAL GEN Voltage Control Unit (VCU) Base Control Voltage ($V_{dc}$) Static Offset 1.00 V Modulation Amplitude ($A_m$) Dynamic Swing 0.00 V Modulation Rate ($f_...

What is jQuery in JavaScript?

JQuery was designed to handle Browser Incompatibilities and to simplify HTML DOM Manipulation, Event Handling, Animations, and Ajax. Code (Finding HTML Elements by Id) <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script> </head> <body> <h2>Finding HTML Elements by Id</h2> <p id="id01">Hello World!</p> <p id="demo"></p> <script> $(document).ready(function() { var myElements = $("#id01"); $("#demo").text("The text from the id01 paragraph is: " + myElements[0].innerHTML); }); </script> </body> </html> Output Finding HTML Elements by Id Hello World! The text from the id01 paragraph is: Hello World! Code (Finding HTML Elements by Class) <html> <head> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.7.1/jquery.min.js"></script> </head>...

OFDM Baseband and Passband

MATLAB Code >> %% OFDM BPSK Full Simulation: All Plots clear all ; close all ; clc; % --- 0. Parameters (Matching your HTML UI) --- nSymbols = 2; % Number of OFDM Symbols N = 4; % Subcarriers nCP = 2; % Cyclic Prefix fs = 1000; % Sampling Frequency (Hz) fc = 5; % Carrier Frequency (Hz) baudRate = 1; % Baud Rate %% --- 1. Generate Message (Bitstream) --- totalBits = nSymbols * N; bits = randi([0 1], 1, totalBits); %% --- 2. Make OFDM Symbols (Serial to Parallel) --- % Each column is one OFDM Symbol bitMatrix = reshape(bits, N, nSymbols); %% --- 3. Apply BPSK Mapping --- % 0 -> -1, 1 -> 1 bpskSymbols = 2*bitMatrix - 1; %% --- 4. Perform IFFT (Baseband Time Domain) --- ofdmTimeDomain = ifft(bpskSymbols, N); %% --- 5. Add Cyclic Prefix --- cpPart = ofdmTimeDomain(end-nCP+1:end, :); ofdmWithCP = [cpPart; ofdmTimeDomain]; serialBaseband = ofdmWithCP(:); % Flatten for transmission %% --- 6. Generat...

Transistor Biasing & Q-Point Simulator

The Transistor Lab: Q-Point & Biasing Transistor Biasing & Q-Point Simulator A transistor needs to be "biased" before it can amplify. This means setting a Quiescent (Q) Point —a resting DC state where the transistor is half-awake, even when no signal is present. VCC (+10V) R1 R2 (5k) V-Base R1 Resistor (Bias) 8000 Ω Signal Strength 1.0V Signal: ON ...

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