Systems and methods to mitigate the intermittent interruption of voice radio broadcast

摘要

(57) Abstract The system (100) which eases the influence of intermittent suspension of the audio radio broadcast system is offered, but in this system, the main radio signal and the redundant radio signal it is transmitted by transmitter subsystem (120), it is received by receiver subsystem (140). Output (112) of the aural signal source (110) is joined by the modulator (160) which, modulates the Radio Frequency signal (162) is joined to the transmission antenna (172). 2nd output (114) of the aural signal source (110) is joined to the delay circuit (116) in order to introduce specified time delay into that. The audio source signal which is delayed is joined by the modulator (164) which, modulates the 2nd Radio Frequency signal (166) is joined to the transmission antenna (172). Receiver subsystem (140), receiving the both of the main radio signal and the delay redundant radio signal, joins these to the respective demodulator (180 and 182). At least the demodulator (180), detecting the degradation of the main radio signal, has the circuit (181) which sends the quality measurement output signal (186) to the blend control circuit (190). The main aural signal where from the demodulator (180) is reconstructed is joined to the 2nd delay circuit (184). Time delay of the 2nd delay circuit (184) is equal to the time delay of the delay circuit (116) almost. Voice response from of the delay circuit (184) and redundant voice response from of the demodulator (182) are joined by blend subsystem (135), the respective weight factor after being joined, being joined mutually in this blend subsystem, form the compound aural signal which is joined to the voice response circuit (150).