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Microphone Theory
Microphone Types
Stereo Microphone Techniques
Polar Paterns
Random Mic
100
Manufactured by Shure, this microphone is considered the "Swiss Army Knife" of microphones
What is an SM57
100
This type of microphone employs a mylar diaphragm attached to a moving coil
What is a dynamic microphone
100
Two cardioid microphones, 90 degree angle, coincident
What is XY
100
This polar pattern type has a null at 180 degrees.
What is Cardiod
100
This stereo microphone technique requires a jecklin disk.
What is OSS
200
This phenomenon causes an exaggerated boost in low frequency response when a sound source is placed too close to a microphone
What is proximity effect
200
This type of microphone employs a diaphragm & backplate on a capsule that form a capacitor.
What is a condensor microphone
200
One bi-directional microphone & one cardioid microphone. 90 degree angle, & requires a matrix to decode.
What is Mid-Side
200
This polar pattern has null points at both 90 degree poles
What is bi-directional
200
This device converts an unbalanced instrument signal into a balanced signal proper for a preamp.
What is a Direct Inject box
300
This is the typical connect found on most balanced microphones
What is an XLR connection
300
This type of microphone employs a thin piece of metal between two metal plates to form a diaphragm.
What is a ribbon microphone
300
two bi-directional microphones, 90 degree angle, coincident
What is Bluemlein
300
This polar pattern has no null points
What is omni directional
300
Condensor Microphones require this to function.
What is phantom power (48v DC)
400
This is any device that transforms one type of energy into another. A microphone is an example of this
What is a transducer
400
This type of condensor capsule allows for multiple polar patterns
What is a dual capsule
400
Two microphones of the same make & model placed 2-10 ft from each other
What is a spaced pair (A/B)
400
This specific cardioid pattern is commonly found in boom microphones. It has a very narrow focal point
What is ultra-cardioid
400
This rule prevents phasing issues when more than 1 microphone is placed on a source
What is the 3:1 rule
500
Out of the Shure SM57, The Senneheiser MD421, the Rode NT-2a, & the Royer 121, which is the condensor microphone?
What is the Rode NT-2a
500
This type of microphone requires an external power supply.
What is a tube condensor microphone
500
two microphones, 110 degrees, 17 inches apart, near coincident
What is ORTF
500
These variations on the cardioid pattern do not null at 180 degrees, but rather 100 degrees & 145 degrees.
What is super & hyper cardioid
500
This stereo microphone technique actually employs 3 omni directional microphones. It is most commonly used to record symphony & orchestral sections.
What is a decca tree