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.最新モデルの録音機器をシールドできるかどうかが最初に検討すべき問題です。 たとえば、iphone、iphoneX / XR / XS / maxなどの最新モデル。ご存知のとおり、現在の録音機器は、ソフトウェアとハードウェアの両方でノイズリダクションとフィルタリングを使用して設計されているため、録音シールドを技術的に統合する必要があります。これらの最新の録音機器。 また、製品を選択する際に注意する必要がある、適格な製品と見なされるように十分にシールドすることもできます。
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.あらゆる角度からシールドできますか？ 市場に出回っている多くの妨害機には明らかな欠点があります。つまり、シールド効果は、録音妨害機が録音デバイス（携帯電話、ボイスレコーダーなど）のピックアップに面している場合にのみ達成できます。録音妨害機は角度を形成します。 そして徐々に増加すると、シールド効果は徐々に弱まります。 180度に達すると、ほとんどの記録シールドにはシールド効果がありません。 これは、比較的詳細で比較的専門的な問題です。 経験のない人にはわかりにくいです。 次の図を使用して説明します。
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.
