STEREOPHONIC SIGNAL REPRODUCING CIRCUIT

摘要

PURPOSE:To prevent an increase in discomfort noise by stopping the functions of a sound field controlling circuit automatically when a weal signal or multipath disturbing wave is received. CONSTITUTION:The sound field controlling circuit 17 is so controlled by the output of a signal intensity detector 19 or multipath detector 20 so that its internal switch 18 is turned off. When the extent of disturbance increases up to a specific value, the detector 10 sends out the OR output of an OR circuit 21 and when a weak signal is received, on the other hand, the signal intensity detector 19 sends out the OR output of the circuit 21. Consequently, the switch 18 controlled by the OR output of detector 19 or 20 is turned on in response to an increase in discomfort noise generated by the sound field controlling circuit during weak signal or multipath disturbance reception to stop the sound field controlling functions forcibly.