Audio Scrambler
Simple audio obfuscation. I was suprised this worked but gnuradio tools made
it easy. The idea is based on the SIGSALY system used by the US and British
governments during WWII to protect transatlantic voice communications. Here
we simply multiply the audio stream by a gaussian noise source, and record
both the noise and product to two seperate files. Use "scramble.py" to do this.
Then use "play.py" to verify the product file is indeed unintelligible. To
recover the plain audio use "descramble.py" which divides the product file
by the noise file.