METHOD FOR VOICE COMMUNICATION THROUGH ABSORBING MEDIUM Russian patent published in 1997 - IPC

Abstract RU 2093961 C1

FIELD: radio engineering, in particular, systems for wide-band information transmission in real time through rocks using electromagnetic waves. SUBSTANCE: method uses all possibilities provided by frequency transparency of medium and voice spectrum. It involves inversion and frequency reduction of most informative region of human voice spectrum, its transmission and recovery of spectrum during reception. EFFECT: increased effective distance. 6 dwg, 1 tbl

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RU 2 093 961 C1

Authors

Tsaturjan Ehduard Nikolaevich[Ua]

Dates

1997-10-20—Published

1995-10-10—Filed