Frequency modulation broadcast real-time monitoring method

Abstract

The invention provides a frequency modulation broadcast real-time monitoring method, comprising the following steps that S1, a signal generator sends an audio signal; S2, a transmitter receives the audio signal, modulates the audio signal and then transmits an audio modulation signal; and S3, a receiver receives the audio modulation signal and demodulates the audio modulation signal to obtain an audio demodulation signal, wherein a real-time monitoring module in the receiver receives and processes the audio signal and the audio demodulation signal in real time, thereby outputting a transmitterperformance index parameter. Through application of the technical scheme provided by the invention, on the premise that other dedicated test instrument is not employed, the performance of the frequency modulation broadcast transmitter is monitored, and the normal work of the frequency modulation broadcast transmitter does not need to be interrupted, so a real-time monitoring demand is satisfied.

Description

technical field [0001] The invention relates to the field of FM broadcast transmitter testing, in particular to a method for real-time monitoring of 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, disto...

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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