Detection method of low quality audio camouflage high quality audio

Here is a paper "audio tamper detection based on sub-band spectral Smoothness", which can be used for reference.

The quality here mainly involves sampling rate, that is, low sample rate camouflage high sample rate audio.

Most of the fake lossless is the high-quality audio that is sampled and then encapsulated in a lossless format.

11025Hz camouflage resampling 22050Hz Audio, resampling does not supplement useful information, that is, 11025/2 ~ 22050/2 is still flat.

22050Hz Raw audio, generally natural gradual decay (this depends on the content of the audio, there are exceptions)

Finally, with a variety of classifiers, enough to detect the above-sampled audio.

Detection method of low quality audio camouflage high quality audio