Quadraphonic FM: Sound reduction
In 1969, Louis Dorren invented the Quadraplex method of solitary station, discrete, suitable four-channel FM broadcasting. There are two supplemental subcarriers within the Quadraplex procedure, supplementing the single a person Employed in conventional stereo FM. The baseband structure is as follows: • fifty Hz to 15 kHz main channel (sum of all four channels) (LF+LR+RF+RR) … Read more