How to effectively avoid being recorded?

　　With the advancement of technology and the continuous upgrading of digital products such as voice recorders, the level of recording has gradually improved and recording has become more and more convenient. Important decisions and secret news from government departments, as small as corporate internal meetings and personal conversations, will be unknowingly tapped and recorded, and even spread, which has seriously threatened the security and protection of our conversational information. Voice messages are really urgent!

　　Our company has focused on information security for 14 years, and has developed a recording jammer that uses random ultrasonic noise to interfere with voice messages, making the recorded voice unable to be broadcast normally. The FPGA-based ultrasonic noise algorithm is close to All brands of mobile phones and voice recorders that have been on the market within two years have very good interference effects. The product is suitable for confidential meeting rooms, public security bureau petition centers, prosecutors’ reception halls, courts, negotiation rooms, offices and other places for private conversations.

　　Recording jammer products have the following outstanding advantages: the appearance of a speaker-type product is exactly the same as an ordinary speaker on the surface, and the background noise is increased, and the concealment is extremely strong. Compared with other products on the market, its interference power is larger, the noise signal picked up by the recording device is stronger, and the shielding effect is stronger. Compared with other products, its shielding distance is longer. The interference distance of recording jammers to most mobile phones on the market is more than two meters. For some recording devices, the shielding distance of mobile phone voice recorders can reach 5 meters, which covers a wider range of equipment. For mobile phone voice recorders of mainstream brands, the coverage rate of recording jammers can reach over 85%, which is much higher than similar products on the market.

　　The working principle of the recording jammer: by emitting ultrasonic waves with random noise that human ears cannot perceive, when digital devices such as mobile phones are recording, these noises are recorded into the digital device together with the sound of normal conversations, making the recorded audio invalid , It has the same interference effect on the audio information in the captured video. Because the noise with ultrasonic noise is randomly generated and cannot be restored, the audio after the interference cannot be restored, thus ensuring that the original information is not leaked and spread. .

　　Recording jammer is a high-tech product that uses technical means to prevent illegal recording. People's normal conversations are unknowingly recorded by others, and after the recording software is processed and modified, they become a means of threats by people with ulterior motives. If some confidential information related to national security is maliciously traded and then known by those with intentions, it will It has a very serious impact on society, so in order to prevent voice leakage, the use of recording jammers has become a trend!

　　It is worth noting that the recording jammer is specifically effective for mobile phones, voice recorders and other digital products. It does not interfere with humans. The human body cannot accept ultrasound. After the recording jammer is turned on, the recording of the mobile phone is all noise, but people It cannot be heard, so it does not affect normal conversation and communication, and it is impossible to detect that the anti-recorder is working.

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