Microphone Notes

  • Created by: Noxas
  • Created on: 20-11-19 09:37

Microphones

Dynamic Microphones

Changes in air pressure move the diaphragm, which moves a coil of wire attached to the back of the diaphragm. This coil surrounds a magnet, and as it moves, it creates an electrical signal in the magnetic field.

Negatives: 

  • Limited high frequency response

  • Low sensitivity

  • Often large

Positives:

  • Robust and good for live use

  • Can withstand high volumes

  • Does not require phantom power

Uses:

  • kick/snare drums

  • Live vocals

  • Guitar amps

  • Some brass

Condenser Microphones

Changes in air pressure move a large plate, which acts like a diaphragm. A second, charged plate, is directly behind the 1st plate, and together they form a capacitor. As the diaphragm vibrates, the distance between the plates changes, which generates an electrical signal.

Negatives:

  • Fragile, expensive

  • Need phantom power

  • Can peak easily

Positives:

  • Good for studio use

  • Can be very small

  • Can capture high frequency very well.

Uses:

  • Vocals

  • Acoustic guitar and orchestras

  • Piano

  • Drum overheads

Ribbon Microphones

Changes in air pressure move a metallic ribbon that is suspended in a magnetic field. This generates a voltage that is proportional to the movement of the ribbon.

Negatives:

  • Extremely fragile

  • Very

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