Frequency modulation (FM) broadcasting real-time monitoring system

Abstract

The invention provides a frequency modulation (FM) broadcasting real-time monitoring system, which is characterized by comprising: a signal generator, for outputting an audio signal; a transmitter, for receiving the audio signal, and transmitting an audio modulation signal after the audio signal is modulated; and a receiver, for receiving the audio modulation signal and then demodulating the audiomodulation signal to obtain an audio demodulation signal, wherein the receiver includes a real-time monitoring module that receives and processes the audio signal and the audio demodulation signal inreal time in order to output a transmitter performance indicator parameter. Through the technical solution provided by the invention, performance of an FM broadcasting transmitter can be monitored without using other dedicated test equipment, and demand of real-time monitoring can be met without interrupting normal operation of the FM broadcasting transmitter.

Description

technical field [0001] The invention relates to the field of FM broadcast transmitter testing, in particular to a real-time monitoring system for FM broadcast. Background technique [0002] In the prior art, any radio station, regardless of its scale, such as: national radio station, provincial radio station, municipal radio station, county-level radio station, township radio station, campus radio station, enterprise and institution radio station and army barracks radio station, etc., All are composed of audio broadcast control equipment, audio transmission equipment, FM radio transmitter and transmitting antenna feeder. The FM radio transmitter sends out the audio signal by means of frequency modulation. [0003] In the performance test of traditional FM radio transmitters, the receiver usually needs to use special equipment to complete the measurement of indicators such as signal-to-noise ratio, distortion degree and frequency response value, such as level meter, distorti...

AI Technical Summary

Problems solved by technology

[0003] In the performance test of traditional FM radio transmitters, the receiver usually needs to use special equipment to complete the measurement of indicators such as signal-to-noise ratio, distortion degree and frequency response value, such as level meter, distortion meter and other equipment, which is neither convenient nor sufficient efficiency

In addition, the performance test of the FM broadcast transmitter needs to interrupt the normal broadcast program, that is, the offline test, which cannot monitor the performance indicators of the FM broadcast transmitter in real time when the FM broadcast transmitter is working normally, and is not suitable for the current real-time monitoring of the performance of the FM broadcast transmitter. need

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