METHOD FOR CONTROLLING ACOUSTIC SPEECH INFORMATION SECURITY, CIRCULATING INDOORS, FROM ITS LEAKAGE THROUGH ACOUSTIC CHANNEL Russian patent published in 2017 - IPC H04B10/07 

FIELD: radio engineering, communication.

SUBSTANCE: invention relates to the information security from leakage through technical channels, and can be used primarily to control the security of acoustic speech information circulating indoors from leakage from inside to outside through the window structure (WS). In a method for controlling the acoustic speech information security circulating indoors from leakage through an acoustic channel to outside through the WS based on the definition of the window structure sound insulation through its through sounding with test acoustic signals at frequencies of the speech spectrum, calculating the achievable verbal intelligibility of speech and compared with the established norm, sounding the WS with a symmetrical cross-section of the structure is carried out outdoors.

EFFECT: providing control of the acoustic speech information security circulating indoors from its leakage from inside to outside through the window structure with increased sound insulation of the window structure and a limited sound pressure level of the sounding signal.

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