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I have two versions of a sample, one is 44.1 kHz and the other 96 kHz. Is there any tool to find out if the 96 version is a interpolation of the first? or how can I know it?

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    Start by looking at the spectrum. If the 96k version has real spectral components above 22k, then there's a good chance it's not an up-sample. If the spectrum cuts off at 22k, you cannot conclude either way, since the original source material may have been band-limited to 22k to begin with. Apr 8 at 16:20

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