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Descrambling split-band voice inversion with deinvert

Accepted submission by canopic jug at 2017-09-16 04:31:45
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Voice inversion is a primitive method of rendering speech unintelligible to prevent eavesdropping of radio or telephone calls. I wrote about some simple ways to reverse it in a previous post. I've since written a software tool, deinvert (on GitHub), that does all this for us. It can also descramble a slightly more advanced scrambling method called split-band inversion. Let's see how that happens behind the scenes.

http://www.windytan.com/2017/09/descrambling-split-band-voice-inversion.html [windytan.com]


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