Patent ID: 7486796

Claim:
A stereo receiver comprising: electric field strength detecting means for detecting an electric field strength of a received signal, and a stereo demodulation circuit for outputting original voice signals of left and right channels, wherein a blend circuit is provided for blending the original voice signals with each other to output blended voice signals of the left and right channels, and wherein the degree of blending between the original voice signals is continuously changed correspondingly to a magnitude of the electric field strength, wherein the blend circuit comprises variable resistance means, first capacitive elements connected in series to both ends of the variable resistance means, respectively, a first resistor for inputting a first of the original voice signals to one of the first capacitive elements, and a second resistor for inputting a second of the original voice signals to another of the first capacitive elements, the variable resistance means comprising a parallel circuit including two pin diodes whose anodes are connected to each other and two pin diodes whose cathodes are connected to each other, and wherein a control voltage is applied between the interconnected anodes and the interconnected cathodes on the basis of the electric field strength and wherein a resistance value of the variable resistance means is controlled in accordance with the electric field strength, and the blended voice signals are output from a first connection point via the variable resistance means and the one first capacitive element and a second connection point via the variable resistance means and the other first capacitive element.