What Is Backplate?

- Jul 16, 2018-

Backplate specifically refers to the metal plate behind the diaphragm on the condenser microphone. We know that on a condenser microphone, the diaphragm is stretched and laid flat on the surface of the metal backplane, and there is a very small space between it and the backplane. It is this small space that actually forms a variable capacitor. When the diaphragm vibrates due to the impact of sound waves, it will cause a corresponding change in the voltage and voltage in the capacitor. This change is the sound signal we usually hear after multi-amplification and corresponding modulation of the built-in amplifier of the microphone.

 

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