FIELD: information technology.
SUBSTANCE: method involves generation of artificial noise, noise masking, masking light flux in fibre-optic communications on acoustic frequencies, and the apparatus which implements the active protection method comprises a power supply and an audio playback device (audio player, generator) which can be electrically connected to an optical radiation modulator which uses vibrational, acousto-electric, electro-optical and magneto-optical methods of modulation.
EFFECT: eliminating leakage of voice information.
21 cl, 2 dwg
