目的：设计一种简单的拾取电路采集表面肌电信号，拟应用于动作肌电信号的特征识别。
OBJECTIVE:To design a detection circuit according to the characteristics of the sEMG, which can pick-up the SEMG signals for action recognition.
由于高阻电路容易拾取杂散的辐射噪声，所以需要采取屏蔽措施。
Shielding is required because high impedance circuitry is susceptible to pickup of spurious radiated noise.
该电路涉及到放大、滤波、电平抬升等电路，并给出了安全设计问题，利用驻极体电容传声器来拾取心音信号。
It also gives a safety design problem analysis using an electret capacitor microphone to pick-up the heart sound signals.
该电路涉及到放大、滤波、电平抬升等电路，并给出了安全设计问题，利用驻极体电容传声器来拾取心音信号。
It also gives a safety design problem analysis using an electret capacitor microphone to pick-up the heart sound signals.
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