A computer science student of the Rochester Institute of Technology has done some interesting testing of Youtube's audio fingerprinting filters, which are, amongst other things, supposed to prevent the upload of clips with unauthorized music.

The results in a nutshell? Users that want to circumvent those filters just need to pitch their tunes by 6%. Resampling at a higher speed also works, as do several other simple modifications. From the article describing the test results in detail:

"It's likely that some of these workarounds will never be totally fixed, as the amount of computational complexity required to address some of the time/pitch changes would likely create a tremendous strain on a system that's probably already working as hard as it can."

In other words: Even all-mighty Google doesn't have enough servers available to check whether that Mickey Mouse voice used in your video originally belonged to Barry White. Welcome to the happy hardcore age of online video.

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