As a brand-new high-tech product, the recording shielder has gradually entered people's field of vision. It can prevent illegal recording and protect the privacy and safety of your conversations in many occasions! The principle is: the recording shield sends out a The interference signal makes the pickup (microphone) of the sound acquisition device fail, so that it can only pick up the interference signal, but not the normal voice signal, thus achieving the purpose of voice shielding. After the jammer is turned on, the files recorded by the recording equipment are played with a "humming" sound and the content of the conversation at that time cannot be heard. This product is widely used in confidential meetings, high-end business talks, military meetings and other places to prevent illegal recording. There are many types and forms of recording shielding products on the market. How to choose a good recording shielding product has become a problem that needs to be solved.
So, what constitutes a useful and practical anti recording blocker product? According to the author's many years of investigation, a qualified product should follow the following points:
1. Whether the latest model of recording equipment can be shielded is the first question to be considered. For example, the latest models of iphone, iphoneX/XR/XS/max, etc. As we all know, the current recording equipment has been designed with noise reduction and filtering in both software and hardware, which requires the recording shield to technically integrate these latest recording equipment. It can also be well shielded to be considered a qualified product, which should be noted when choosing a product.
2. Whether the audio recording jammer will cause discomfort to the human body after it is turned on is a very important issue. The recording shielding device realizes shielding by emitting shielding signals. The frequency and algorithm used by different manufacturers of the shielding signal are very different. The frequency and algorithm determine people's feelings and shielding effect. According to the author's investigation, after many products start working There will be sharp or harsh sounds, which will make people feel uncomfortable. Such products should be avoided as much as possible.
3. Can it be shielded from all angles? Many jammers on the market have an obvious disadvantage, that is, the shielding effect can only be achieved when the recording jammer is facing the pickup of the recording device (such as a mobile phone, voice recorder, etc.), once the pickup and the recording jammer form an angle. And gradually increase, the shielding effect will gradually weaken. When it reaches 180 degrees, most recording shields have no shielding effect. This is a relatively detailed and relatively professional problem. It is difficult for those who have no experience to understand it. We Use the following diagram to illustrate:
As long as you keep the above three points in mind, and then choose a Audio jammer /noise generator that suits your usage habits according to your own situation, especially the characteristics of easy portability and flexible placement, for example, it can be placed in the car, on the desk, or Conference table, etc., you can refer to AL ASAR TECH's recording jammer products. Their products have the inspection report of the Ministry of Public Security and are regular manufacturers. You can pay attention to it, I believe that some people who have the need for conversation confidentiality should really choose a convenient, easy-to-use and practical recording shield to protect your conversation privacy.
