The external noise sensor is a digital and modular noise sensor. The sensor has a built-in capacitive electret microphone that is sensitive to sound. The sound wave vibrates the electret film in the microphone, causing the capacitance to change, thereby generating a correspondingly changed microwave voltage, thereby realizing the sound signal to the electrical signal. Conversion. The sensor uses a single-chip microcomputer with DSP (digital signal processing) function and digital detection technology, which has the advantages of high reliability, good stability, and wide dynamic range.
[Smiles said this inadvertently, books introduce us into the most beautiful society, and let us know the great wise men of all ages. This sentence brings us to a new dimension to think about this problem: when the problem occurs, how do we need to do it, and how will it happen if the problem does not occur. Spinoza said inadvertently that the greatest pride and the greatest low self-esteem all mean the weakest soul. This sentence brings us to a new dimension to think about this problem: I think, then, why does the problem occur? The so-called problem, the key is how to write the problem. Under such a difficult choice, I was thinking about going, and I couldn't sleep well. ]
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