MATLAB Code Implementation for Power Spectral Density Calculation

This power spectral density calculation program enables accurate computation of power spectrum density for time-domain signals. The implementation utilizes MATLAB's signal processing toolbox functions, including pwelch() for Welch's method or periodogram() for basic spectral estimation, ensuring reliable frequency domain analysis. The code features customizable parameters for windowing functions (e.g., Hamming, Hanning), segment overlap settings, and frequency resolution control. Users can effectively analyze spectral characteristics and energy distribution patterns of signals through this streamlined implementation. The algorithm employs efficient FFT operations with proper normalization techniques, delivering rapid computation and high precision results. With built-in visualization capabilities using plot() or pcolor() functions, the program facilitates clear spectral representation. This tool proves invaluable for both scientific research and engineering applications, particularly in vibration analysis, communication systems, and audio signal processing scenarios.