Fm stereophonic receiver

Abstract From the Canadian patent

An FM stereophonic receiver for receiving FM stereophonic broadcast signals, which includes a first comparison circuit for generating a first control signal corresponding to ratio of a left stereo signal (L) to a right stereo signal (R), a first separation circuit for separating the first control signal into a left dominant signal and a right dominant signal, a second comparison circuit for generating a second control signal corresponding to ratio of a stereo sum signal (L+R) to a stereo difference signal (L-R), a second separation circuit for separating the second control signal into a sum dominant signal and a difference dominant signal, a first level control circuit for controlling an …