Protect Voice Security-Recording Jammer

　　The recording blocker, a powerful voice security tool, turn on the computer and enter keywords at will. Information security or personal privacy protection. The retrieved results are often about tens of millions. The XX door and XX door that appear with online privacy leaks are people's personal information. People’s awareness of protection is gradually increasing, but how to take effective measures has become a matter of opinion. With the development of intelligent technology, the popularization of various voice control equipment, and the improvement and improvement of the performance of recording equipment, people's use and development of sound have reached an unprecedented height. However, the development of science and technology is always a double-edged sword. While bringing convenience to mankind, it will also produce a series of negative problems. The recording leak at the University of Hong Kong not long ago not only had a negative impact on the school, but also spread to Hong Kong's education sector and even Hong Kong society. In fact, the problem of recording leaks also exists abroad, such as the well-known Prismgate incident in the United States, the wiretapping incident in the United Kingdom and the earlier Watergate incident in the United States. A series of recording leaks have brought varying degrees of distress and trouble to the parties involved, but also brought new business opportunities to the enterprise. Many technology companies have begun to develop and produce various illegal recording jamming devices, such as electromagnetic interference and noise interference. I went to visit a friend who is doing information security products last weekend without any problems. After entering the office, I found an alarm clock on his desk. I picked it up and fiddled with it. My friend smiled mysteriously, let me guess what it was? I didn't find any difference from other alarm clocks. After various speculations, the truth surprised me. It was actually an anti-recording jammer!!! My friend explained that because the people who are preparing to steal the record are more vigilant, the manufacturer supports customized development to adapt to different occasions. For example, it will be designed as a speaker in the conference room, and it will be designed as a phone in the office. In addition, there are also car-mounted versions, portable versions, etc. The purpose is to reduce the vigilance of the thief. The recording equipment shields interference. In addition, anti-recording equipment has high technical requirements, so there are few independent research and development companies. The Tianjin manufacturer of this alarm clock version of the recording muting device is one of the few companies that have independently developed and produced it, and took the lead in adopting the most advanced acoustic interference technology. Even if the other party gets the recording, they can't separate the interference sound from the original sound, and can't distinguish the voice information. Eventually achieve the purpose of preventing voice leakage. Finally my friend smiled at me strangely and said, come and listen to the recording of the conversation between the two of us! Oh my God! It turned out to have been in a state of anti-eavesdropping, but I did not notice or hear any abnormal equipment working sound! The recordings are basically buzzing interference sounds, and it is impossible to distinguish the content of the conversation. In addition to marveling at the magical functions of this voice blocker, I also expressed concern about the current status of voice security. With the increase in the awareness of privacy protection in the entire society, people's demand for anti-recording equipment will become stronger and stronger. For enterprises, it is both an opportunity and a challenge. It can be said that there is a long way to go. At present, information leakage incidents are becoming more frequent. Enter keywords at random for information security or personal privacy protection. The retrieved results are often around tens of millions. People's awareness of personal information protection is gradually increasing, but how to take effective measures , It has become a matter of opinion.

　　With the development of intelligent technology, the popularization of various voice control equipment, the improvement and improvement of the performance of recording equipment, people's use and development of sound have reached an unprecedented height. However, the development of science and technology is always a double-edged sword. While bringing convenience to mankind, it will also produce a series of negative problems. The recording leaks that occurred at the University of Hong Kong not only had a negative impact on the school, but also affected Hong Kong's education sector and even Hong Kong society. In fact, the problem of recording leaks also exists abroad, such as the well-known Prismgate incident in the United States, the wiretapping incident in the United Kingdom and the earlier Watergate incident in the United States.

　　A series of recording leaks have brought different levels of trouble and trouble to the parties involved, but they have also brought new business opportunities to the company. Many technology companies have begun to develop and produce various illegal recording jamming devices, such as electromagnetic interference and noise interference. The newly developed L7B recording jammer is upgraded on the basis of the original equipment. The FPGA-based ultrasonic 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 has a very obvious effect for new recording equipment and mobile phone recording.

　　The recording blocker emits ultrasonic waves with random noise that cannot be perceived by human ears. When recording on digital devices such as mobile phones, these noises are recorded into the digital device together with the sound of normal conversations, making the recorded audio invalid. The audio information in the video also has the same interference effect. Because the noisy 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. With the increase in the awareness of privacy protection in the entire society, people's demand for anti-recording equipment will become stronger and stronger. For enterprises, it is both an opportunity and a challenge. It can be said that there is a long way to go.

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