OLED display audio VU meter – AVR/Arduino project

https://www.electronics-lab.com/oled-display-vu-meter-avr-arduino-project/

A volume unit (VU) meter or standard volume indicator (SVI) as it’s sometimes called, is a device which displays the audio signal level of an audio signal. It is essentially a basic voltmeter (fitted with transducers to convert sound to voltage) that takes a simple average of the signal and displays it with an attack and release time of around […]