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http://dx.doi.org/10.14400/JDC.2021.19.7.209

A Study on portable voice recording prevention device  

Kim, Hee-Chul (Division of Computer Engineering, Gwangju University)
Publication Information
Journal of Digital Convergence / v.19, no.7, 2021 , pp. 209-215 More about this Journal
Abstract
This study is a system development for voice information protection equipment in major meetings and places requiring security. Security performance and stability were secured with information leakage prevention technology through generation of false noise and ultrasonic waves. The cutoff frequency band for blocking the leakage of voice information, which has strong straightness due to the nature of the radio wave to the recording prevention module, blocks the wideband frequency of 20~20,000Hz, and the deception jamming technology is applied to block the leakage of voice information, greatly improving the security. To solve this problem, we developed a system that blocks the recording of a portable smartphone using a battery, and made the installation of a separate device smaller and lighter so that customers do not recognize it. In addition, it is necessary to continuously study measures and countermeasures for efficiently using the output of the anti-recording speaker for long-distance recording prevention.
Keywords
portable; voice; recording prevention; Battery; Firm-Ware;
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