QuickFFT: High Speed FFT for Arduino

This video explains a function to perform FFT around five times faster than the conventional method (with reduced accuracy). It makes use of square wave multiplication that not only increases speed but also reduces memory consumption.

update:
code for high speed and accurate FFT: https://youtu.be/IWr6ZUK_aps

Code and Documentation: https://www.instructables.com/id/QuickFFT-High-Speed-FFT-for-Arduino

For Accurate FFT refer EasyFFT: https://www.youtube.com/watch?v=kJ-g9MfY0Wg

Disclaimer:
Please test the code properly before applying it to your application.

Видео QuickFFT: High Speed FFT for Arduino канала Abhilash Patel