eRuido is the world's oldest brand of accusous noise monitoring systems. It was called eRuido at a time when Internet-connected systems in the last century were commonly referred to as an initial "e" letter, for example eBusiness, eCommerce, coining this term to call the pirmer system that could measure acoustic decibels, record audios by events and display them online on a website. The first edition was launched online in 1996 in the company Gerdau Aza de Chile, by Acutec Limitada. The system was designed and licensed to the latter by acoustic engineer Abelardo Velasquez and built in its different versions in collaboration with the Acoustic Engineers Jaime Gaete, Alejandro Lanzetta, Juan Antonio Munita, Manuerl Inzunza, among others, who mostly collaborate to this day on the project.