ACOUSTIC DEVICE TO BE MOUNTED ON MOTORCAR

摘要

PURPOSE:To utilize an acoustic device in common without alteration on the FM receiver side of the acoustic device to be mounted on a motorcar by installing an oscillator which oscillates at frequencies in the radio band in a TV receiver and imposing frequency modulation using a TV audio signal on the oscillator output. CONSTITUTION:A television audio signal received by the car TV receiver T is amplified by an audio intermediate frequency amplifier 25 and then FM- detected and an FM transmitter block 29 imposes frequency modulation on the signal from the oscillator of the radio frequency band to radiate the modulated signal from an antenna 30. The radiated radio wave is received by an FM radio receiver 32 equipped to the acoustic device 31, which processes and amplifies the input signal to output acoustic signals from speakers 33 and 34.