The digital recording pen is a kind of digital recorder. It is shaped like a pen and is easy to carry. It also has many functions, such as laser pen function and MP3 player. Compared with traditional recorders, digital recorders record audio by means of digital storage.
Working principle: The digital recording pen converts the analog signal into a digital signal through a digital-to-analog converter by sampling and encoding the analog signal, and performs a certain compression for storage. Even if the digital signal is copied multiple times, the sound information will not be lost, and will remain unchanged.
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