How to make an equalizer for arduino?

Question

Arduino

I am using a shift register and I want to make light music on it. The sound will come from the hc-06 bluetooth module and be sent to the arduino for further Fourier sound processing and output to the shift register. Can anyone tell me how to make the spectrum analyzer itself?

Answer 1

Well, find on the wiki a description of the Cooley-Tukey algorithm with rotating factors, which will save you 2x memory and you're done. I did this - and everything worked for me.

Answer 2

For example, using the FFT library for Arduino .