Method for rapidly destroying broadcast audio file viruses
A technology of audio files and viruses, applied in speech analysis, instruments, etc., can solve problems that have not been solved well, and achieve the effect of avoiding hacker attacks and low computational complexity
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[0041] Take the standard 256kbit / s mp2 audio "Fei Xiang-Hometown Cloud.mp2" file as an example of the input original audio. The audio duration is 4 minutes and 24 seconds, and the total number of frames is 11020 frames. In this embodiment, the input audio file is processed in units of coded frames, one frame at a time, until all 11020 frames are processed. Taking 2000 frames as an example, the specific implementation process of the processing is as follows:
[0042] 1. Parsing the frame header: According to the ISO11172-3 standard, the number of channels obtained from the audio frame analysis is 2, the sampling rate is 48000kHz, the bit rate is 256kbps, the sublimit of the highest subband participating in encoding is 27, and the decoding table is the 0th table, etc. information;
[0043] 2. Analyzing subband encoding information: According to the ISO11172-3 standard, the bit allocation and sample code words of each channel subband are analyzed from the audio frame, and the...
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