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Test your basic knowledge |
Microphones Theory
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Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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. 12V DC; 24V DC; 48V DC
Rear Sensitivity (Relative to Front)
Boom
Field Mixer
3 Voltages for Phantom Power
2. French physicist who pioneered piezoelectricity.
Types of Pre-Amps for Condenser Mics
Condenser Diaphragm
Transient Response
Pierre Curie
3. 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.
Vintage Tube Mic Precautions
Sennheiser MD421
Wind Screens
Types of Field Recording
4. Will yield a 6dB increase in output - but will cause a loss of high frequency response.
End Address
Omnidirectional (Electrical Polar Pattern)
Crystal Mic Damage
Doubling Ribbon Length
5. Coincident pairing angled between 90
Polar Pattern
Parabolic Systems
Trombone Mic Placement
X/Y
6. Raises the body of the microphone increasing height.
Neumann KM 184
Jecklin Disk
Dynamic Range
Clutch
7. Shure's newer ribbon studio mics; KSM 353 & 313 (Roswellite); KSM 44 - 32 - & 27.
Damping
Shure KSM Series
Pickup
Dual Mono
8. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.
Pressure Capsules
Rear Sensitivity (Relative to Front)
Shockmount
Altec/Western Electric 639
9. When miking an amp placing it near the center of this will make it sound brighter; Miking near the outer edge of this will make it sound darker and more mellow in tone.
Reverse Polarity
Cone
M/S Stereo
Shiny Box 46MXL
10. Dynamic; Cardioid; End Address; Manufactured by Shure; Popular musicians' choice due to its sturdy construction and ability to work well with instruments that produce high sound pressure levels.
Vintage Tube Mic Precautions
Magnetic Induction Formula
Shure SM57
Neumann U67
11. Voltage applied to piezoelectric material will cause it to deform or change shape; NO PHANTOM POWER!
Frets
Crystal Mic Damage
Rear Sensitivity (Relative to Front)
On -Axis
12. To break down or disassemble any portion of a set or stage set- up.
Bidirectional (Electrical Polar Pattern)
Striking
Cardioid
Reverse Polarity
13. Derived from two words; 'electr' from electrostatic and 'et' from magnet.
X/Y
Stereosonic
Electret (Word Etymology)
Soundfield
14. When using two microphones reverse the polarity of the bottom mic.
Snare Drum Mic Placement
Tube Condenser Microphone
Boom
Types of Pre-Amps for Condenser Mics
15. Dutch broadcasting stereo mic technique; An X-Y type with the mics 30cm apart and at a 90
NOS
Georg Neumann
Legs
AKG D12
16. Best signal- to- noise ratio; Minimal phase cancellation; Quality representation of what is being recorded; Attempt to ignore unwanted external noise.
Baffle
Georg Neumann
Goals of Sound Effects
Cardioid (Electrical Polar Pattern)
17. Part of a mic stand that the mic stands on.
Shiny Box 46MXL
Legs
Magnetic Induction Formula
Arrays
18. Three or more microphones working together to capture a stereo or surround image of the sound source.
Interference Tube...
Sennheiser MD421
Arrays
Bandpass
19. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Headstock
Spherical Mic
Clip
SASS-P
20. - Omnidirectional: 1 - Cardioid: 1.7 - Supercardioid: 1.9 - Hypercardioid: 2 - Bidirectional: 1.7
M/S Stereo
Pad
Distance Factor (DSF)
AKG DYN60
21. E = Blv - e - Electromotive Force (in volts) - B - is the magnetic field strength - l - is the length of the conductor - v - is the velocity of the conductor moving through the magnetic field
Shiny Box 46MXL
AKG D36
Magnetic Induction Formula
Stereosonic
22. The first cardioid pattern dynamic microphone.
3 Voltages for Phantom Power
5 Common Microphone Transducers
Diaphragm
AKG D12
23. 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;
AKG C414
Neumann U47
M/S Stereo
Stereosonic
24. Forward facing bipolar mics spaced 20cm apart.
Ribbon Microphone Sensitivity
Bidirectional (Electrical Polar Pattern)
Neumann U47
Faulkner
25. The first phantom powered condenser microphone designed for use by Georg Neumann for Norwegian State Television.
Angle of Max Rejection
Neumann KM-84
Coincident (Definition)
RFI
26. Used for stereo miking to ensure correct balance and imaging.
Matched Pairs
OSHA Exposure Table
Over/Over
Bidirectional (Electrical Polar Pattern)
27. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
Pressure Capsules
Altec/Western Electric 639
Subcardioid
Faraday's Law of Magnetic Induction
28. Cable wrapping method that reduces interference and makes it easier to unravel the cable.
SASS-P
Frets
Neumann KM-84
Over/Under
29. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.
Distance Factor
Telefunken ELA- M251
Machine Head
AudioTechnica AT2020
30. The combination of the ribbon and magnet in a ribbon microphone.
Over/Over
Measurement Mics
Motor
Pressure Capsules
31. Pair of cardioids facing to the front and rear - plus a sideways - facing figure 8; Mid- sides pair plus another rear- facing cardioid which is combined with the same Figure 8 mic for the surrounds.
Telefunken ELA- M251
Neumann CMV3
Magnetic Induction Formula
MSM
32. Basket/grille made out of a specific type of copper wire to block protect the mic from physical damage and to protect the mic from stray RFI
Faraday Cage
Neumann KM 184
Microphone (Word Etymology)
Pressure Capsules
33. Used to make sure you have accurate angles & capsule spacing when miking in stereo.
Casing
Condenser Diaphragm
Protractor & Ruler
Pistonphone
34. Used by government agencies to determine safe sound exposure levels (in dB) over a period of time; 85 - 90 dB = 16 hrs. of safe exposure time at 85 dB; Decreases to 8 hrs. of safe exposure time at 90 dB.
OSHA Exposure Table
Proximity Effect
Carbon Microphone
AKG D12
35. Device used to calibrate sound pressure measurement devices; Emits a single 1 kHz frequency over a sustained period of time.
Electro Voice RE20
AudioTechnica AT4051
Pistonphone
Faraday's Law of Magnetic Induction
36. Barrier made of shaped wire covered with a piece of nylon that is placed between a sensitive mic and the talent to avoid damage to the diaphragm of the mic.
Clutch
Pop Filter
Microphone Care...
Coincident (Definition)
37. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.
Shure KSM-353
Doubling Ribbon Length
Baffle
Leslie Cabinet
38. First microphone invented by Georg Neumann
Crystal and Ceramic Mic Use
Types of Pre-Amps for Condenser Mics
SASS-P
Reisz Marble Mic
39. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Pressure Capsules
Noise
Shure KSM Series
Legs
40. Tube microphone capable of SPL's over 140dB.
Microphone Storage
Neumann U67
Voice Coil
Subcardioid (Electrical Polar Pattern)
41. Omnidirectional: 0 - Cardioid: 8 - Supercardioid: 12 dB - Hypercardioid: 6 dB - Bidirectional: 0
Rear Sensitivity (Relative to Front)
Subcardioid (Electrical Polar Pattern)
RFI
NOS
42. Using omnidirectional as a reference of 1 - this is a measurement of how much farther you can be from a mic to achieve equal output level in other polar pattern microphones.
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Terry Bozzio
Distance Factor
Clement Ader
43. The attachment that holds a microphone in place on the mic stand; Comes in various shapes - sizes - and applications.
Clip
Supercardioid
Legs
Coverage Angle
44. 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.
Over/Over
Headstock
AB Stereo
Trumpet Mic Placement
45. One of the world's greatest condenser microphones prized for the CK12 capsule.
MSM
AKG C12
SPL Meter
Bidirectional (Electrical Polar Pattern)
46. Measurement similar to how our hearing works in frequency response charts.
Types of Pre-Amps for Condenser Mics
Powering Condenser Microphones
Shure SM81
A-Weighting
47. Aluminum Ribbon - Bi-Polar (Figure 8); Side Address; Manufactured by Shiny Box; Buttery mid- range improves digital recordings and smooths out modern treble; Best on drums - piano - overheads - and vocals where treble is focused.
Shotgun
Spaced Pairs
Shiny Box 46MXL
Shure SM57
48. 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.
Electret (Word Etymology)
Types of Field Recording
Shure SM58
Microphone Care...
49. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Electro Voice RE20
DIN
SASS-P
Legs
50. Used to filter heating current in certain mics; Invented by Georg Neumann.
AKG C1000S
Sealed Ni-Cad Battery
AB Stereo
Real Time Analyzer (RTA)
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