Wow, check out this GIANT volume meter! So cool lookin’~
Looks like it’s some type of microcontroller with bunch of replays… Looks pretty simple to build… (the controls i mean)
“Volumen”, a giant graphic equalizer built by Argentinian artist, Sergio Avello relays the ambient urban noise levels around the Redgaleria in Buenos Aires. Pretty intense way of visualizing the constant buzz of the city, plus nice shots of the internal circuits at the below link.