Enter the fix_fft library , a specialized tool that sacrifices a tiny bit of precision for a massive boost in performance by using . Why Use fix_fft?
: It uses integer addition and subtraction, which is significantly faster than floating-point multiplication. fix_fft library download
Since this is a specialized library, it is often manually installed rather than found in the standard Library Manager. Enter the fix_fft library , a specialized tool
: The most maintained version is available on kosme’s fix_fft GitHub. Enter the fix_fft library
Because the folder structure of some downloads may not be "IDE-ready," a manual installation is often the safest bet: fix_fft | Arduino Documentation
Turbocharge Your Arduino: Faster FFT with the fix_fft Library