Louis Dorren is an American engineer.

In 1969 Louis "Lou" Dorren invented the Quadraplex system of single station, discrete, compatible four-channel FM broadcasting

FM broadcasting

FM broadcasting is a broadcasting technology pioneered by Edwin Howard Armstrong which uses frequency modulation to provide high-fidelity sound over broadcast radio. The term "FM band" describes the "frequency band in which FM is used for broadcasting"...

. He founded Quadracast Systems, Inc. (QSI) of Palo Alto, California

Palo Alto, California

Palo Alto is a California charter city located in the northwest corner of Santa Clara County, in the San Francisco Bay Area of California, United States. The city shares its borders with East Palo Alto, Mountain View, Los Altos, Los Altos Hills, Stanford, Portola Valley, and Menlo Park. It is...

, United States to license his patents to RCA

RCA Records

RCA Records is one of the flagship labels of Sony Music Entertainment. The RCA initials stand for Radio Corporation of America , which was the parent corporation from 1929 to 1985 and a partner from 1985 to 1986.RCA's Canadian unit is Sony's oldest label...

and others.

Dorren was awarded more than a dozen patents in the radio communications field, many of which are still in use today.