Demodulating circuit for controlling stereo separation

A stereo demodulating circuit in an FM stereo receiver, comprising:

• level signal generating means for generating a level signal representative of electric field strength of a signal being received,
• control signal generating means responsive to said level signal for generating a control signal the magnitude of which abruptly changes to a first predetermined value when said electric field strength equals a second predetermined value and smoothly changes as said electric field strength decreases from said second predetermined value,
• decoder means responsive to said received signal and a signal derived from a pilot signal included in said received signal for demodulating said signal to provide a plurality of output signals, and
• separation control means responsive to said control signal and coupled to said decoder means for controlling the separation of said stereo output signals provided therefrom, whereby said signal separation is abruptly changed from the stereo state to a given state between a stereo state and a monaural state in accordance with said electric field strength and a continuous signal separation change is provided between said given state and said monaural state in accordance with said electric field strength.