| 摘要 |
<p>The invention relates to the radio communication and may be used in the radio transmitters and receivers The method of stereophonic radio broadcasting consists in that to the transmitter, in the capacity of modulation voltage, there is applied a preliminarily formed complex signal, the spectrum of which contains the overall audio frequency signal of both channels; the signal received by the receiver is amplified at high frequency, it is detected and restored the complex signal. The complex audio frequency signal sent by the transmitter is formed by detection of the audio frequency signals of both channels, from the signals detected with low-frequency filters there are separated the infrasonic spectral components, they are subtracted from each other and combined with the overall audio frequency signal of both channels. In the receiver, the restored complex signal is separated by low and infrasonic frequency filters into two components. The audio frequency component is amplified by an audio-frequency amplifier with automatic gain control, and the infrasonic frequency component is detected and applied in positive polarity to the automatic gain control circuit of the audio-frequency amplifier of one channel, and in negative polarity - to the circuit of the second channel Claims: 1Fig.: 2</p> |
