FFT
I found some cheap AI Thinker ESP32 Audio Kit V2.2 on AliExpress and because I was tired of all the wires I had to connect to implement my different scenarios that are possible with my Arduino Audio Tools Library, I thought it to be a good idea to buy this board.
You dont need to bother about any wires because everything is on one nice board. Just just need to install the dependencies
The fast Fourier transform (FFT) can be used to determine the frequencies of a singal. More details can be found in the Wiki
Note
The log level has been set to Info to help you to identify any problems. Please change it to AudioLogger::Warning to get the best sound quality!
Dependencies
You need to install the following libraries: