Abstract: The rotational speed monitoring of rotating machinery is required in many industrial processes. Electret marker tracking provides a new approach to improving the performance of electrostatic ...

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In particular he’s using a different pre-amp for an electret microphone, and a low-pass filter with a 723Hz cut-off to reduce harmonic content that was confusing the Arduino’s algorithm.

Charge Carrier Mobility,Charge Carriers,Corneocytes,Electric Dipole,Electric Field Strength,Electric Polarization,Electrode,Electrostatic Field,External Electrostatic ...

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