Anti-recording devices are also known as recording shields or recording disruptors. Recording disruptors might still be unfamiliar to many people. Many people don't know about them or haven't even heard of them. This is quite normal because it is generally believed that recording disruptors are only used in some professional scenarios to prevent illegal recording, such as business meetings, confidential meetings, military meetings, and other high-level confidential scenarios. However, this is not the case. Recording disruptors have gradually become a part of ordinary people's lives. They can be used in any conversation scenario.
When you are having a meeting at the company, conducting a business negotiation, or chatting with an old friend, you don't want the conversation content to be recorded and leaked. A recording interference device can help you solve this problem. Currently, there are two common types of recording interference devices on the market: white noise recording interference devices and ultrasonic recording interference devices. Their names are based on the principles of their anti-recording functions.
As the name suggests, the white noise recording interference device achieves the effect of interfering with recording by emitting white noise. During use, it often accompanies with a relatively loud and unpleasant noise, which disrupts normal conversations. Therefore, it is not recommended to use it in some formal and important conversation occasions. Today, we will mainly introduce the ultrasonic recording interference device and its advantages.
The ultrasonic recording interference device works by emitting ultrasonic waves that are imperceptible to the human ear and contain random noise. When recording is conducted on digital devices such as mobile phones, this noise along with the normal conversation sounds are simultaneously recorded into the digital device, making the recorded audio invalid. It has the same interference effect on the audio information in the captured video. Since the noise with the ultrasonic band is randomly generated and cannot be restored, the audio that has been interfered with cannot be restored either. Thus, it ensures that the original information is not leaked or disseminated.
All you need to do is to press the switch button, and the ultrasonic recording interverter will emit ultrasonic waves that are beyond the human hearing range and harmless to humans. Since ultrasonic waves are beyond the human hearing range, human ears cannot hear them. In other words, compared to human ears, the ultrasonic recording interverter is silent and low-noise. For the microphones in digital devices such as mobile phones and voice recorders, they will be affected by the recording interverter, thus drowning out the normal conversation sounds in the random noise. The post-recording processing algorithm also has difficulty restoring them, thereby protecting the conversation content from being leaked at the source.
The sound waves emitted by the recording interferences can only reach digital devices such as mobile phones and voice recorders, but cannot be heard by humans. Compared with other anti-recording devices, they have no buzzing noise and can quietly protect the conversation environment without being easily noticed.
The recording interferences only work on digital devices such as mobile phones. They have no effect on humans because the human body does not receive ultrasonic waves. Therefore, what is recorded by the mobile phone is all noise, but humans cannot hear it, so it does not affect normal conversation and communication. Even they cannot notice that the anti-recording device is in operation.
We are a Chinese manufacturer specializing in custom-made audio interference devices. We offer a variety of audio interference devices for your selection and customization. If you have any requirements, please contact us at info@alasartech-security.com.
