This repository contains source codes for various core concepts in Signal Processing, including helper tools, visualization scripts, and working examples for each module.

• Filter Designs

  • FIR and IIR filters
  • Windowing methods (Hamming, Hanning, Blackman, etc.)

• Complex Basebandings

  • Quadrature signals
  • IQ modulation/demodulation

• Helper Functions

  • Signal utilities (dB conversion, normalization, etc.)

• Imperial March

  • Synthesized generation of the Imperial March using note frequencies

• Plots FFT

  • FFT visualization
  • Spectrum plotting

• Gaussian

  • Gaussian signal and filter generation

• Realization

  • Direct form, cascade, and parallel realizations

• Hypothesis Testing

  • Detection theory basics
  • Neyman-Pearson method

• Sampling Theorem

  • Aliasing and Nyquist rate demonstration

• Windowing FIR

  • FIR design using various window functions

• Convolution & Correlation

• Spectrogram / STFT

• Z-Transform and Pole-Zero Analysis

• Digital Modulation (BPSK, QPSK, QAM)

• Time-Frequency Analysis

• MATLAB or
• Python 3.x with:
  • NumPy
  • SciPy
  • Matplotlib

Feel free to fork, modify, or suggest additions via pull requests. If you encounter any bugs or want to improve documentation/examples, contributions are welcome!