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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. Timing difference between two waves; Waves interfere cancelling each other out and altering frequency response; Measured in degrees; Can be caused by reflections of sound waves; Can be reduced by putting cabinet or amp at an angle.
Electret (Word Etymology)
Phasing
Distance Factor (DSF)
Protractor & Ruler
2. Extremely narrow area of sensitivity in front with extended reach; Also has multiple lobes which vary in position with frequency; Not made from combining pure patterns - but created by using an interference tube.
Altec/Western Electric 639
Fukada Tree
Shotgun
E.C. Wente
3. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.
On -Axis
Binaural Mic
AB Stereo
AKG C414
4. The lowest - and usually most intense - frequency of a complex sound; Most often perceived as the sound's basic pitch.
Cardioid (Electrical Polar Pattern)
AKG DYN60
Casing
Fundamental Frequency
5. Sounds that arrive from angles other than the 0
Pressure Gradient Capsules
Bidirectional (Electrical Polar Pattern)
Off-Axis
Field Mixer
6. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.
Neumann U67
Dynamic Microphone
OSHA Exposure Table
Subkick
7. The first cardioid pattern dynamic microphone.
Faulkner
Off-Axis
AKG D12
Over/Under
8. 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.
FFT Analyzer
Microphone Care...
Tube Condenser Microphone
Shiny Box 46MXL
9. 1 Bidirectional & 1 Cardioid placed coincidentally; Bidirectional faces left and right and cardioid faces the sound; Gives control of the focus and size of the stereo image;
Capacitor Microphone
Bidirectional
M/S Stereo
Faraday's Law of Magnetic Induction
10. Pair of omni mic separated by a circular absorptive baffle.
Headstock
Jecklin Disk
Noise
Theatrophone
11. The first AKG dynamic microphone.
AKG DYN60
Microphone Care...
Measurement Mics
Body
12. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.
Pressure Capsules
Faraday's Law of Magnetic Induction
Striking
Condenser Diaphragm
13. 12V DC; 24V DC; 48V DC
Fukada Tree
3 Voltages for Phantom Power
Over/Under
End Address
14. Mounts on a single stand to provide for adjustable spacing and angling between mics.
Rudolf Goerike & Ernest Pless
Coverage Angle
Stereo Bar
Sennheiser MD441
15. To capture two perspectives on the same sound.
Dual Mono
Reisz Marble Mic
Rudolf Goerike & Ernest Pless
Diaphragm
16. An electrical device characterized by its capacity to store an electric charge;
Angle of Max Rejection
Capacitor
OSHA Exposure Table
Shockmount
17. + & - (Front & rear in opposite equal amounts)
Pistonphone
Null Angle
AB Stereo
Bidirectional (Electrical Polar Pattern)
18. Big + & + (More front with less positive rear)
Faraday's Law of Magnetic Induction
Subcardioid (Electrical Polar Pattern)
Clutch
Arrays
19. Measurement of Sound Pressure; stated as being N/m2 with a Newton being a measurement of force equal to about 9.8 lbs; Equal to 94dB SPL
AKG C414
Motor
Neumann U87
Pascals (Pa)
20. A flat or roughly flat strip on the neck of a stringed instrument against which the strings are pressed to shorten the vibrating length and produce notes of higher pitches.
Subkick
Casing
Fingerboard
Proximity Effect
21. Device used to measure sound loudness; Often used to measure and balance the loudness of each speaker in a home - studio - or live venue or theater system.
Shure SM57
Altec/Western Electric 639
SPL Meter
Ambient Sound Sensitivity
22. 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.
MSM
Angle of Max Rejection
Rear Sensitivity (Relative to Front)
Coincident Pair
23. 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.
Tube Condenser Microphone
RCA 44BX
Percussion Mic Placement
Electret Condenser
24. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.
Fukada Tree
Alan Blumlein
Shockmount
Diaphragm
25. When using two microphones reverse the polarity of the bottom mic.
Counterbalance
Lowpass Filter
Snare Drum Mic Placement
Types of Pre-Amps for Condenser Mics
26. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
Shure Unidyne Series
Subcardioid
A-Weighting
Boom Placement Rule
27. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.
Clutch
Over/Over
Theatrophone
AudioTechnica AT4051
28. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Sealed Ni-Cad Battery
Noise
AudioTechnica AT2020
Damping
29. Moving a conductor (a coil of wire) through a magnetic field will cause a voltage to be induced across the conductor.
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30. Delicate and require extreme care; NO PHANTOM POWER; Becoming more popular than ever because of highly efficient magnets - lower manufacturing costs - and great fidelity.
Shure Unidyne Series
Shure KSM-353
Ribbon Mic Characteristics
Alan Blumlein
31. Used in production sound for multiple perspectives on the set; Used in Audio Post to record a number of mics into a recorder with minimal set- up & tear down.
Field Mixer
Percussion Mic Placement
Decca Tree
Casing
32. The moving plate of a condenser capacitor; Constructed of a thin piece of metal or thin plastic - such as Mylar - coated with gold or nickel; .05 - 10 microns thick.
AudioTechnica AT4051
Binaural Mic
Condenser Diaphragm
Shure SM81
33. 2 - 4 ft. from player; Placed below the line of sight of the bell - rotated at about 30 degrees off axis - and tilted upward.
Electret (Word Etymology)
Carbon Microphone
Trombone Mic Placement
Neumann KM 184
34. The outer covering of a microphone.
Pistonphone
Over/Over
Microphone Storage
Casing
35. Big + & - (More front with less opposite rear)
Pierre Curie
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Clip
Shure SM57
36. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser
Protractor & Ruler
Neumann U87
5 Common Microphone Transducers
Vintage Tube Mic Precautions
37. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
Doubling Ribbon Length
Side Address
Subkick
Piezoelectric Effect
38. Pure polar pattern with which the microphone is equally sensitive in all directions; Great for capturing ambiance or room reverb.
Faraday's Law of Magnetic Induction
Omnidirectional
Max SPL
Faraday Cage
39. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.
Lowpass Filter
Cardioid
NOS
Types of Field Recording
40. Configured to simulate the spacing and directivity of human hearing; Box shape with two 'ears' on each side.
SASS-P
Arrays
AKG C12
Matched Pairs
41. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Soundfield
AudioTechnica AT4051
Bandpass
Kick Tunnel
42. Used for stereo miking to ensure correct balance and imaging.
Matched Pairs
3:1 Rule
Measurement Mics
Distance Factor
43. Coincident pairing that is at 90
Faraday Cage
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Subkick
Stereosonic
44. Microphone with 4 large diaphragm condenser capsules; 3 bidirectional and 1 omni; Can be combined to make any polar pattern.
Mono
Soundfield
Cardioid (Electrical Polar Pattern)
AudioTechnica AT2020
45. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.
AKG D36
Nuvistor Tube
Sennheiser MD441
Packing
46. Occupying the same space and time.
Magnetic Induction Formula
Coincident (Definition)
Parabolic Systems
Interference Tube...
47. Consumers can listen to live broadcasts over telephone lines; Individual one- way experience that required a subscription service to listen to performances.
Theatrophone
Ambient Sound Sensitivity
Speed of Sound Underwater
Shiny Box 46MXL
48. To oppose with equal weight or force as in the length of the boom arm versus the weight of the microphone.
Shure SM57
Faulkner
Over/Under
Counterbalance
49. 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
ORTF
Microphone Storage
3:1 Rule
50. 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
Pistonphone
Wind Screens
Leslie Cabinet
Protractor & Ruler