condenser microphones

CONDENSERMICROPHONES

CONDENSER OPERATION Condenser microphones, also called

electrostatic or capacitor microphones, convert sound into electricity using electrostatic principals.

They have two plate elements, one moveable and one fixed.

The moveable plate is given an electrical charge from a power source, creating electrostatic energy between the plates.

They have two plate elements, one moveable and one fixed.

The moveable plate is given an electrical charge from a power source, creating electrostatic energy between the plates.

Cross-Section of a Typical Condenser Microphone

OPERATION CONTINUED

Sound waves vibrate the movable plate.

As the distance between the two plates changes, the amount of stored electricity changes.

CONDENSER MICS ARE SENSITIVE Condenser mics are very sensitive, and

can respond quickly and accurately to sound.

INSIDE A CONDENSER MICROPHONE

The signal out of the capacitor is small and must be pre-amplified or boosted.

Since capacitors require a charge, condenser microphones require a power source from a battery or phantom power.

These Microphones need power

NOT TOO MUCH SOUND PRESSURE They are used in situations where they

are not subjected to much sound pressure.

Sound pressure level history

CONDENSER MICS Because condenser mics can handle

high frequencies well, they are used in musical applications – in the string section of an orchestra for example.