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Signal protection for prohibited shooting areas

In modern society, mobile phones, cameras and various electronic devices are everywhere. In order to protect personal privacy, many occasions have set up prohibited shooting areas. At this time, signal protection devices come in handy. Today, let's talk about these interesting and practical devices and see how they

New thinking in signal processing

In today's era of information explosion, signal processing technology continues to develop and become an indispensable and important part of all walks of life. Imagine that you are attending an important meeting and your mobile phone rings. The embarrassment can be imagined. Here you can use a small