PURPOSE: To provide a direct conversion receiver circuit which can reduce the noises and the interference.

CONSTITUTION: The received AM high frequency signals are inputted to a pair of mixers 18 and 19 and are mixed with the high frequency equal to the carrier frequencies having the phases different by 90° from each other. The outputs of both mixers 18 and 19 are supplied to the phase shifters 27 and 28 via the LPF 23 and 24 and the A/D converters 25 and 26. The signals which undergone the delay of phases through the shifters 27 and 28 so that the phases are different by 90° from each other are supplied to a matrix circuit 29. The circuit 29 outputs a sum or difference signal of those signals. The signal sent from the circuit 29 is converted into an analog signal by the D/A converters 30 and 31, and the modulated signal of each side band of the AM high frequency signal is separated from the analog signal. Then the signal containing less noises is selected and transmitted to a speaker 35.