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Sessions Quiz 2
quiz 2
18
Engineering
Graduate
12/02/2010

Additional Engineering Flashcards

 


 

Cards

Term
A plot that describes the sensitivity of a microphone to sounds arriving from any direction over a 360 o range
Definition
Microphone Polar Pattern
Term
Equal sensitivity to sounds from ALL directions. This is the natural pattern for pressure capsules. Has less proximity effect than directional mics and extended low frequency pick-up.
Definition
Omni-directional –
Term
Sensitive to sounds arriving from the front and the rear.
Definition
Bi-directional
Term
Most sensitive to sounds arriving from the front while rejecting sounds from rear
Definition
Cardioid
Term
Sensitive in a slightly narrower pattern in the front than a Cardioid and has a small lobe at rear
Definition
Supercardioid
Term
Sensitive in a slightly narrower pattern in the front than a Cardioid and has a small lobe at rear
Definition
Supercardioid
Term
Sensitive in a narrower pattern in the front than a Cardioid and has a prominent lobe at rear
Definition
Hypercardioid
Term
Extremely narrow area of sensitivity in front with extended “reach” also has multiple lobes which vary in position with frequency. mic polar pattern is not made from combining pure patterns, but is created by using an interference tube
Definition
Shotgun
Term
In a moving-coil microphone, sound waves cause movement of a thin metallic diaphragm and an attached coil of wire that is located inside a permanent magnet.
Definition
Dynamic Mic
Term
microphone where transducer is a strip of extremely thin aluminum foil, wide enough and light enough to be vibrated directly by the moving molecules of air of the sound wave, so no separate diaphragm is necessary
Definition
Ribbon Mic
Term
has two electrically charged plates—one that can move, which acts as a diaphragm, and one that is fixed, called a back- plate. This is, in effect, a capacitor with a positively and negatively charged electrode and an air space in between
Definition
Condenser Mic
Term
X/Y, Stereosonic, Mid/Side, Blumlein
Definition
Coincident Pairs
Term
X/Y
Definition
Coincident Pairs, angled as much as 135
Term
Stereosonic
Definition
Coincident Pairs, angled 90
Term
Mid/Side
Definition
(mid mic [usually a cardioid] facing towards source, side mic [always a Bidirectional] aimed at 90o
Term
Blumlein
Definition
(a pair of bipolar mics that make a pattern of crossing figure 8s)
Term
Mid/Side
Definition
(mid mic [usually a cardioid] facing towards source, side mic [always a Bidirectional] aimed at 90o
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