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Test your basic knowledge |
Microphones Theory
Start Test
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. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Legs
Jecklin Disk
Powering Condenser Microphones
Percussion Mic Placement
2. Quartz; Barium Titaniate - Tourmaline; Rochelle Salt - and even cane sugar.
RFI
Cone
Fukada Tree
Examples of Piezoelectric Material
3. Measurement of the mic's sensitivity; Measured in mV/Pa (millivolts per Pascal).
Sensitivity
Shure KSM Series
Counterbalance
Arrays
4. First microphone invented by Georg Neumann
Reisz Marble Mic
Stereo Bar
Trombone Mic Placement
Speed of Sound Underwater
5. 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.
MSM
Wind Screens
Dynamic Microphone
Tuning Keys
6. Changes in air pressure from the front or the back can cause polarity cancellation; Sides have good rejection; Natural polar pattern is bidirectional.
Pressure Capsules
Carbon Microphone
Examples of Piezoelectric Material
Pressure Gradient Capsules
7. Mid-Section of the mic stand; Includes the clutch.
5 Common Microphone Transducers
Alan Blumlein
Body
Increasing Output Voltage in Ribbon Mics
8. A 3- mic array using omni mics with left - right and center placement; Center is placed about 5 ft. closer to the source to eliminate 'holes' in the middle and the center levels are reduced for an even sound; Forms a triangle.
Backplate
Noise
SASS-P
Decca Tree
9. Condenser; Cardioid; End Address; 48V Required; Manufactured by AudioTechnica; Switchable 80 Hz Hi-Pass Filter; Ideal for professional recording and critical applications in broadcast.
AKG C12
Magnetic Induction Voltage
Spherical Mic
AudioTechnica AT4051
10. First to mass produce the condenser microphone in 1929; Improved cutting lathe technology by developing direct drive turntables; Invents 48V Phantom Power to power the new condenser microphone for Norwegian State Television.
Stereosonic
AudioTechnica AT2020
Guitar Amp Mic Placement
Georg Neumann
11. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Transient Response
Model 3B Carbon Microphone
NOS
Faraday's Law of Magnetic Induction
12. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.
Capacitance
Crystal and Ceramic Mic Use
Baffle
Ribbon Microphone Sensitivity
13. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by Rode; Widely recognised as the world's quietest studio microphone; Ideal for vocals - voiceover - and acoustic instruments.
Subcardioid (Electrical Polar Pattern)
Over/Under
AudioTechnica AT4040
Rode NT1A
14. Will yield a 6dB increase in output - but will cause a loss of high frequency response.
Magnetic Induction Voltage
Altec/Western Electric 639
Doubling Ribbon Length
ORTF
15. 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.
Microphone (Word Etymology)
3 Voltages for Phantom Power
Vintage Tube Mic Precautions
Faulkner
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.
Boom Placement Rule
Electro Voice RE20
3:1 Rule
Phase Ports
17. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.
Capacitance
Coverage Angle
Neumann KM-84
Sennheiser MD441
18. + & + (Front & rear in equal positive amounts)
Coverage Angle
3 Voltages for Phantom Power
Omnidirectional (Electrical Polar Pattern)
X/Y
19. Device used to calibrate sound pressure measurement devices; Emits a single 1 kHz frequency over a sustained period of time.
Pistonphone
A-Weighting
Shotgun
Dynamic Microphone
20. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Very small and compact; Especially suitable for use with drums and brass instruments; Includes a clip to mount directly on drums.
Spherical Mic
Sennheiser e604
AudioTechnica AT2020
Diaphragm
21. Used to filter heating current in certain mics; Invented by Georg Neumann.
Leslie Cabinet
Types of Field Recording
Subkick
Sealed Ni-Cad Battery
22. Sounds that may be broadcast over the radio or internet.
Telefunken ELA- M251
Over/Under
Mono
Wind Screens
23. The world's first single element cardioid mics.
LRFB
Examples of Piezoelectric Material
Electret (Word Etymology)
Shure Unidyne Series
24. Tube microphone capable of SPL's over 140dB.
MSM
Piezoelectric Effect
Interference Tube...
Neumann U67
25. 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.
Trumpet Mic Placement
AB Stereo
Off-Axis
Clutch
26. Overall measurement close to the overall sound level in frequency response charts.
Legs
C-Weighting
Tube Condenser Microphone
Sealed Ni-Cad Battery
27. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Magnetic Induction Voltage
FFT Analyzer
X/Y
Rudolf Goerike & Ernest Pless
28. Divisions on the fingerboard which represent the position of a specific note or tone.
Subkick
Frets
Guitar Amp Mic Placement
Stereosonic
29. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.
Shockmount
AB Stereo
3:1 Rule
Shotgun
30. The head or top of the guitar where the tuning pegs are located.
AB Stereo
Headstock
AKG C414
Shure SM57
31. Microphone with 4 large diaphragm condenser capsules; 3 bidirectional and 1 omni; Can be combined to make any polar pattern.
Soundfield
RFI
Kick Tunnel
Terry Bozzio
32. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.
Alan Blumlein
Electret (Word Etymology)
Pressure Capsules
Kick Tunnel
33. Three or more microphones working together to capture a stereo or surround image of the sound source.
Phase Ports
Arrays
Clip
Leslie Cabinet
34. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
Subcardioid
Faraday's Law of Magnetic Induction
Alan Blumlein
Shotgun
35. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
AKG C12
ORTF
M/S Stereo
Cardioid (Electrical Polar Pattern)
36. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
Pressure Gradient Capsules
Boom
Mono
Condenser Diaphragm
37. + & - (Front & rear in opposite equal amounts)
Over/Under
Increasing Output Voltage in Ribbon Mics
Shure SM58
Bidirectional (Electrical Polar Pattern)
38. Older ribbon microphone weighing 8.5 lbs. nearly all of it the large magnet!
Distance Factor (DSF)
RCA 44BX
Casing
Crystal and Ceramic Mic Use
39. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Ribbon Microphone Sensitivity
AudioTechnica AT4040
Blumlein Pairing
Angle of Max Rejection
40. 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.
Field Mixer
Phasing
Types of Field Recording
LRFB
41. 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.
Neumann CMV3
Microphone (Definition)
Capacitance
OSHA Exposure Table
42. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
5 Common Microphone Transducers
Bandpass
LRFB
Sennheiser MD421
43. The first cardioid pattern dynamic microphone.
Theatrophone
Field Mixer
AKG D12
Shure KSM-353
44. 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.
Dual Mono
Counterbalance
Kick Tunnel
Distance Factor
45. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Bidirectional (Electrical Polar Pattern)
Crystal & Ceramic Microphones
On -Axis
Noise
46. An extremely strong acoustic nano- film designed to replace the foil ribbon in ribbon microphones.
Roswellite
Shure SM58
Motor
Wind Screens
47. Forward facing bipolar mics spaced 20cm apart.
Boom Placement Rule
Ribbon Mic Characteristics
Protractor & Ruler
Faulkner
48. To break down or disassemble any portion of a set or stage set- up.
Striking
Neumann U87
Percussion Mic Placement
Pressure Gradient Capsules
49. 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.
Leslie Cabinet
Shure Unidyne Series
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Shiny Box 46MXL
50. 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.
AKG D36
Georg Neumann
Pop Filter
Tube Condenser Microphone
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