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rotten 15 hours ago [-]
Better than playing a record backwards to find the hidden messages. Instead you can find hidden images in recordings.
StizzurpXDD 19 hours ago [-]
A good way to send encrypted pictures. Just convert the images into audio, and nobody would even think to look at the spectrogram of the audio file. Nice.
femto 19 hours ago [-]
An Orthogonal Frequency Division Multiplexing fax machine!