Mini Program for Implementing ZoomFFT Frequency Refinement

I have developed a mini program that implements ZoomFFT frequency refinement technology. This tool is designed to help users better understand and apply ZoomFFT algorithms in spectral analysis and signal processing. ZoomFFT is an advanced algorithm that enables high-resolution frequency analysis by concentrating computational resources on specific frequency bands of interest. The program allows users to input signal data, configure zoom parameters (including center frequency and bandwidth), and perform refined FFT analysis through a zooming process that combines frequency shifting, digital filtering, and decimation. Key implemented functions include frequency band selection, complex demodulation, anti-aliasing filtering, and high-resolution spectrum calculation. The output provides detailed spectral characteristics within the specified frequency range, making it particularly useful for detecting closely spaced spectral components. This utility aims to support both educational and professional applications in signal analysis!