analizor-spectru-audio
adapted from https://rcl-radio.ru/?p=42903 https://rcl-radio.ru/?p=42895
for TFT is inspired from https://jollifactory.blogspot.com/2017/01/arduino-based-mini-audio-spectrum.html?fbclid=IwAR2a4IEWAD9oyai2MAZMipdmvTj_VeXL5Iy0tV_0--9F_EbjXtc1LOKowWA