Broadcast guarantee method based on speech recognition technology

Abstract

The invention discloses a broadcast guarantee method based on a speech recognition technology, relates to the technical field of illegal broadcast monitoring, and aims to solve the problems of low monitoring efficiency and investigating lag caused by a reason that the existing ''black broadcast'' discovery mostly depends on manual monitoring or citizens' complaints. The method comprises the steps of scanning a frequency band to discover signal frequency points in the broadcast frequency band, performing intermediate frequency monitoring and record listening on corresponding signals in sequence to obtain signal audio data, segmenting and classifying the audio data, extracting speech audio data, converting the broadcast speech into a text via the speech recognition technology, retrieving the recognized text according to a keyword library, judging whether the signals are ''black broadcast'' according to the retrieval result, and repeating the processes, thereby realizing automation of the service flow and the ''black broadcast'' discovery.

Description

technical field [0001] The invention relates to the technical field of illegal broadcast monitoring, in particular to a broadcast guarantee method based on voice recognition technology. Background technique [0002] "Black broadcasting" refers to radio stations that are set up without the approval of the radio and television management department and the radio management agency, and use broadcast frequencies to broadcast to the public (illegal broadcasting). In 2013, the state began to strictly manage drug advertisements, and the phenomenon of broadcasting illegal advertisements on a large scale through the establishment of black broadcasting has become more and more serious. The black radio stations set up without authorization all use low-quality, high-power transmitters, and there are serious safety hazards, mainly in the following aspects: [0003] 1. Black broadcasts mainly broadcast false medical advertisements, which are very tempting and deceive listeners into buyin...

AI Technical Summary

Problems solved by technology

[0003] 1. Black broadcasts mainly broadcast false medical advertisements, which are very tempting, deceiving listeners into buying illegally sold medicines

Moreover, the content of black radio advertisements is vulgar, which is likely to cause adverse effects on minors;

[0004] 2. Black broadcasts occupy frequency resources by force, which can easily interfere with normal broadcasting. At the same time, black broadcast transmission equipment is of poor quality, which can easily interfere with civil aviation communications, making it impossible for aircraft to establish contact with controllers, threatening civil aviation safety;

[0005] 3. Black broadcasting equipment is generally installed in residential quarters, with high transmission power, which is easy to pollute the

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