Audio content consistency monitoring method and system based on frequency domain characteristics

Abstract

The invention discloses an audio content consistency monitoring method and system based on frequency domain characteristics. The method comprises the following steps: acquiring an audio signal; performing delay calibration on the audio signal, and determining the audio signal after delay calibration; carrying out data segmentation on the audio signals after delay calibration, and determining a plurality of groups of segmented audio signals; extracting frequency domain features of each group of segmented audio signals; determining frequency domain feature similarity according to each group of frequency domain features; determining a frequency domain feature similarity average value according to the multiple groups of frequency domain feature similarities; determining the size of the frequency domain feature similarity average value and a frequency domain feature similarity threshold value, thus acquiring a first determination result; and determining whether the audio signal content is consistent or not according to the first determination result, and outputting an alarm signal when the audio signal content is not consistent. According to the audio content consistency monitoring method and system based on the frequency domain characteristics, the accuracy of audio broadcast monitoring is improved, and automatic monitoring of audio broadcast is achieved.

Description

technical field [0001] The invention relates to the technical field of audio analysis, in particular to a method and system for monitoring audio content consistency based on frequency domain features. Background technique [0002] With the rapid development and innovation of radio and television digitization, networking, information technology and other technologies, the business coverage network of broadcast audio has expanded from the previous pure FM broadcast network to the coexistence of wireless broadcast network, Internet, satellite live broadcast network and cable TV network. The types and scale of the audience are also continuously expanding. At the same time, the people's requirements for broadcast quality are getting higher and higher. The safe broadcast of broadcast audio has become an important content of radio and television departments at all levels. [0003] The program production and broadcast capabilities of radio stations at all levels are constantly impro...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a monitoring method and system for audio content consistency based on frequency domain features, which solves the problems of low accuracy of audio broadcast monitoring and the inability to realize automatic monitoring of audio broadcast

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