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source:Industry News release time:2021-03-25 Article author:sznbone Popular:Prison Jamming system
Can blocking recording equipment effectively block mobile phone recordings? "The recording muffler prevents the recording from being recorded. The random noise signal is generated by the recording muffler, which produces suppressive interference to the voice signal, so that only noise information is picked up by the recording device, and the voice information cannot be distinguished, and the recorded signal cannot be distinguished. The original information is restored in the process to ensure the security of the voice information. The recording blocker adopts safe encryption processing, and through the mixing of high and low frequency audio sources, it effectively prevents later restoration.
At present, there are many manufacturers selling such products on the market, but the quality is uneven. When purchasing, you must pay attention to multiple aspects to compare. Shenzhou Mingda has focused on information security for 14 years. The newly developed L7B recording shielding device is in the original The equipment is re-upgraded. The FPGA-based ultrasonic band noise algorithm eliminates the high-frequency noise of the old equipment. It adds the information of various brands of mobile phones and recording equipment that have been on the market in the past two years. It is very obvious for the new recording equipment and mobile phone recording. effect.
The recording jammer is a portable and highly integrated security protection device that integrates ultrasonic interference and voice sound wave interference. It can effectively interfere with digital and analog recordings such as voice recorders, mobile phone recordings, and tape recordings, and interfere with wireless eavesdropping, wired eavesdropping, and isolation. Various voice eavesdropping devices such as wall tapping and laser tapping make it impossible to identify the conversation voice obtained by the eavesdropper, thus effectively protecting your privacy.
The recording blocker is characterized by high interference intensity: our self-developed FPGA-based ultrasonic band noise algorithm can effectively interfere with mobile phones, voice recorders and other digital devices, can record noises, and completely eliminate what a few people can hear Piercing sound. The anti-recorder can interfere with 95% of mobile phones at a distance of more than two meters, 60% of mobile phones at a distance of more than 5 meters, and iPhone X, iPhone 8 and other mobile phones at a distance of 10 meters, which can effectively protect conversation content. There are many interference devices: it has good interference effects on various mobile phones such as iPhone series, Huawei Mate, Honor, OPPO, VIVO, Samsung, Nubia, Meizu, Nuts, etc., and it has good interference effects on Sony, Samsung, Sanyo, Newman, Lenovo, Olympus, etc. The sound recorder has a good interference test effect.
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