The diaphragm of a condenser microphone is usually a metallised plastic foil. An immovable counter electrode is located opposite this movable diaphragm. The two together form a plate condenser (hence the name "condenser microphone"). If a voltage is applied to this construction, the capacity changes when the gap between the diaphragm and the counter electrode changes (i.e. when the diaphragm vibrates), which allows a downstream electronic device to extract the audio signal. This electronic device (and for true condenser capsules the bias voltage that must be connected to both electrodes) also explains why condenser microphones always require a voltage supply to operate, mostly so-called phantom power (or occasionally also a battery).
Articles in this section
- What is the difference between TG V50 and TG V70?
- Can i connect my headworn-, lapel- or instrument microphone with 4pin mini-XLR plug directly to phantom power??
- Where can I get a calibration file for my MM 1 microphone?
- Does phantom power damage dynamic microphones (moving coil microphones and ribbon microphones)?
- Why does the supplied frequency plot look different than the one on the datasheet?
- How to connect a professional microphone to my computer?
- What is the maximum sound pressure level at 1 kHz?
- What is the polar pattern?
- How does a condenser microphone work?
- What is the difference between dynamic microphones and condenser microphones?