What does back-pole condenser microphone mean?

The electret condenser microphone is a type of condenser microphone.
Back pole condenser microphone is a kind of electret condenser microphone, its full name is back pole electret condenser microphone.
There is also a type called diaphragm electret condenser microphone, which is another branch above, which can be understood as the front pole.
Who contains who, the basic functions of mathematics are not learned in vain.

Most of the headsets are electret condenser microphones, but not necessarily back pole condenser microphones!

Most people on the Internet don’t know the above relationship. Some pseudo-expert businessmen always say that electret microphones are rubbish, and that electret microphones are bad for high frequencies, midranges, and low frequencies. You ask him why it’s bad, they just say: "Uh... it’s not good anyway, don’t be more serious, buy my 24k titanium alloy large-diaphragm condenser microphone package will definitely become a god of song, buy now and get free Super professional bath tuning!!!"
I remember the SAM mixer at the time said that "electret microphones are rubbish" such mentally handicapped words.
In fact, if you listen to a class in high school, you should remember the principle of capacitors. Condenser microphones convert electrical signals by changing the distance between the two poles of the capacitor. Electret condenser microphones and pure condenser microphones are only different in power supply. One is self-contained. Power supply, one is external power supply, there is no difference between good and bad.
It’s just that electret condenser microphones have a feature, that is, low-end products have low barriers to entry (a different idea is actually an advantage, otherwise the mobile phone, the most commonly used headset for all mankind), high-end products have high technical costs, causing everyone to see It is a cheap electret condenser microphone.

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