An interactive platform for understanding Low Pass & High Pass Finite Impulse Response filters โ from theory and formulas to live simulations, 3D visualizations, and real Scilab code.
Five interconnected pages covering every aspect of FIR filter design and analysis.
Comprehensive explanation of FIR convolution, windowing methods, LPF & HPF design formulas, and FIR vs IIR comparison.
โ1D time-domain plots, 2D frequency response (magnitude + phase + group delay), and 3D frequency surface โ all in real-time.
โAnimated SVG signal-flow diagram showing delay elements (zโปยน), coefficient multipliers, and adders working together.
โStep-by-step Scilab script walkthrough โ signal synthesis, wfir(), convolution, and side-by-side visual output with click buttons.
โAllows frequencies below the cutoff ฯc to pass with unity gain. Blocks high-frequency components.
Allows frequencies above the cutoff ฯc to pass. Derived from LPF via spectral inversion.
Start with theory, then watch the filter work in real-time, and finally see the implementation in Scilab.