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Test your basic knowledge |
Microphones Theory
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.
Transducer Type
Pressure Capsules
Real Time Analyzer (RTA)
Hypercardioid
2. Best signal- to- noise ratio; Minimal phase cancellation; Quality representation of what is being recorded; Attempt to ignore unwanted external noise.
Fingerboard
RCA 44BX
Percussion Mic Placement
Goals of Sound Effects
3. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
AB Stereo
Side Address
Sensitivity
Microphone (Word Etymology)
4. Characterized by a vacuum tube transducer; Heat rises so many are hung upside down to prevent heat from reaching the microphone head; Avoid jostling or shaking these fragile mics.
Snare Drum Mic Placement
3 Voltages for Phantom Power
Tube Condenser Microphone
Bidirectional
5. Fixed plate that is charged with polarized voltage found in condenser mics; Usually constructed of milled brass; Has a number of holes drilled in it to provide damping for diaphragm.
Polar Pattern
Coincident (Definition)
Backplate
Highpass Filter
6. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
LRFB
Ribbon Microphone
Pad
Subcardioid
7. Big + & - (More front with less opposite rear)
LRFB
Distance Factor
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Ribbon Microphone
8. Keep in proper case; Never disassemble shockmounts
Mid/Side
Cardioid
Microphone Storage
RCA 44BX
9. Considered to be the best mic ever made; VF14 Tube.
Distance Factor
Neumann U47
Condenser Microphone
Soundfield
10. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.
Shure SM57
Proximity Effect
Shure Unidyne Series
Telefunken ELA- M251
11. The world's first single element cardioid mics.
Shure Unidyne Series
Distance Factor
Cardioid (Electrical Polar Pattern)
Diaphragm
12. A stereo miking technique similar to coincident pair - where the mics are set up with some distance between them; Distance and angle of microphones may differ; Creates a more defined stereo image; Produces very sharp images; Provides more 'air'.
Dynamic Microphone
Cardioid
Spherical Mic
Near Coincident Pair
13. The first AKG dynamic microphone.
Machine Head
Pressure Capsules
Sennheiser MD441
AKG DYN60
14. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.
Coincident Pair
Machine Head
Fingerboard
Shockmount
15. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.
Examples of Piezoelectric Material
Terry Bozzio
Shure KSM-353
SPL Meter
16. Dynamic; Cardioid; End Address; Manufactured by Electro Voice; Large Diaphragm; Humbucking Coil; Bass Roll Off Switch; Minimizes proximity effect; Ideal for broadcasting and sound engineering techniques.
Electro Voice RE20
Neumann CMV3
OSHA Exposure Table
Cardioid (Electrical Polar Pattern)
17. Coincident stereo miking techniques that has two microphone diaphragms occupying (as near as possible) the same space; Capsules often on top of each other; Not good for noisy locations.
Coincident Pair
Phasing
Legs
Faraday Cage
18. Sounds that arrive at the 0
Transient Response
Pierre Curie
On -Axis
ORTF
19. Early example of switchable polar patterns; Had both a dynamic and a ribbon capsule inside of it which when combined produced other polar patterns.
Leslie Cabinet
DIN
Faulkner
Altec/Western Electric 639
20. An extremely strong acoustic nano- film designed to replace the foil ribbon in ribbon microphones.
Roswellite
Shure Unidyne Series
Frets
AudioTechnica AT2020
21. Angle of maximum signal rejection in a microphone polar pattern.
Max SPL
Null Angle
Pressure Capsules
Diaphragm
22. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.
Blumlein Pairing
Coincident Pair
AudioTechnica AT4040
Field Mixer
23. Rotating speaker cabinet design featuring separate treble and bass drivers that can switch speeds; Speaker rotate from front to back creating a Doppler effect; Resulted in new spatial perception for each note. Stereo miked up top and single miked at
AKG D36
Georg Neumann
Leslie Cabinet
Condenser Microphone
24. 12V DC; 24V DC; 48V DC
3 Voltages for Phantom Power
AudioTechnica AT4040
Headstock
Lowpass Filter
25. The measuring device used for loudspeaker room response testing.
Real Time Analyzer (RTA)
Ribbon Microphone Sensitivity
Max SPL
Harvey Fletcher
26. Consumers can listen to live broadcasts over telephone lines; Individual one- way experience that required a subscription service to listen to performances.
Microphone (Definition)
Bandpass
Theatrophone
AKG C12
27. 4 to 6 ft. from the player; Mic should be placed below the line of sight of the bell - rotated at about 40 degrees off- axis - and tilted upward.
Pickup
Trumpet Mic Placement
Over/Under
Decca Tree
28. Determined by: Ribbon Thickness (about 3 to 6 microns); Corrugations/Inch; Tension of the Ribbon.
Ribbon Microphone Sensitivity
Cone
Georg Neumann
Packing
29. Reduces the power of a signal used when the trim itself cannot prevent overload in the mic line level signal.
Lowpass Filter
3:1 Rule
Omnidirectional (Electrical Polar Pattern)
Pad
30. Most sensitive to sounds arriving from the front while rejecting sounds from rear; Shaped like a heart; Rejects most signals from 180
AKG D12
RCA 44BX
Cardioid
Clip
31. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Interference Tube...
Neumann CMV3
LRFB
Magnetic Induction Voltage
32. The head or top of the guitar where the tuning pegs are located.
Blumlein Pairing
3:1 Rule
Speed of Sound Underwater
Headstock
33. - Omnidirectional: 1 - Cardioid: 1.7 - Supercardioid: 1.9 - Hypercardioid: 2 - Bidirectional: 1.7
Altec/Western Electric 639
Spaced Pairs
Cardioid (Electrical Polar Pattern)
Distance Factor (DSF)
34. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Ribbon Microphone Sensitivity
Cardioid (Electrical Polar Pattern)
Blumlein Pairing
Carbon Microphone
35. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Unique mic clip with quick- release button; Large diaphragm dynamic element handles high SPL's - making it great for recording guitars and drums.
Sennheiser MD421
Stereosonic
Headstock
Condenser Diaphragm
36. Derived from two words; 'electr' from electrostatic and 'et' from magnet.
Electret (Word Etymology)
Near Coincident Pair
Clutch
Interference Tube...
37. Never store mic in a damp place; Keep dirt & dust away from the mic; Never 'pop' test the mic; Check if a mic is working by lightly scratching the grill.
SASS-P
Clement Ader
Microphone Care...
Tube Condenser Microphone
38. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
X/Y
Microphone (Word Etymology)
Decca Tree
ORTF
39. Dynamic; Cardioid; End Address; Manufactured by Shure; Considered the industry standard for live vocal performance microphones; One of the best- selling microphones in the world.
Transducer Type
3 Voltages for Phantom Power
Shure SM58
Machine Head
40. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.
Roswellite
Binaural Mic
Bandpass
Doubling Ribbon Length
41. An instrument for detecting sound transmitted through water commonly manufactured using ceramic piezoelectric material.
Condenser Microphone
Hydrophone
Snare Drum Mic Placement
Parabolic Systems
42. Condenser; Cardioid; Side Address; 48V Required; Manufactured by AudioTechnica; Ideal for project/home- studio applications; Low price; Remains the low cost performance standard in side- address condenser mics.
Subcardioid (Electrical Polar Pattern)
AudioTechnica AT2020
Ambient Sound Sensitivity
AKG D36
43. Often look like handheld vocal mics; Talk or sing into the end of the microphone.
Faraday Cage
3 Voltages for Phantom Power
Blumlein Pairing
End Address
44. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Spherical Mic
Interference Tube...
Casing
Striking
45. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Condenser Microphone
SASS-P
Model 3B Carbon Microphone
Counterbalance
46. Vintage Tube Mics hold voltage after being unplugged; Be sure grounds are connected to power cord and that the charge has left microphone prior to striking.
Coincident Pair
Vintage Tube Mic Precautions
Increasing Output Voltage in Ribbon Mics
Altec/Western Electric 639
47. To capture two perspectives on the same sound.
Microphone Care...
Fukada Tree
Boom Placement Rule
Dual Mono
48. Shows the total range of the mic's internal pre- amp; Measured in dB (decibels).
Stereo
Hydrophone
Sealed Ni-Cad Battery
Dynamic Range
49. Adds two outer right and left rear facing mics to a Decca tree for surround sound depth.
Doubling Ribbon Length
Fukada Tree
Machine Head
Motor
50. Pair of omni mic separated by a circular absorptive baffle.
Jecklin Disk
Nuvistor Tube
RFI
Vintage Tube Mic Precautions