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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. Condenser; Cardioid/Hypercardioid; End Address; 48V Required; Manufactured by AKG; Can be powered by internal 9 V battery for field recording; Improves clarity of speech with the PB 1000 Presence Boost Adapter.
Nuvistor Tube
AKG DYN60
AKG C1000S
3 Voltages for Phantom Power
2. Angle of maximum signal rejection in a microphone polar pattern.
Kick Tunnel
Microphone (Word Etymology)
Dynamic Mic Characteristics
Null Angle
3. Omnidirectional: 0 - Cardioid: 8 - Supercardioid: 12 dB - Hypercardioid: 6 dB - Bidirectional: 0
Rear Sensitivity (Relative to Front)
Tuning Keys
Backplate
Coincident (Definition)
4. One of the oldest mics; Diaphragm mounted on & compresses cup of tiny granules of carbon (100 microns big) that increase current flow when compressed by sound waves and vary electrical current; Also called Resistance Mics;
Subkick
Sealed Ni-Cad Battery
Carbon Microphone
Magnetic Induction Voltage
5. 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.
Neumann U67
Neumann KM 184
Shure SM57
AudioTechnica AT2020
6. Shows the max sound pressure level possible with a certain amount of distortion; Measured in dB (decibels).
Max SPL
Bass Amp Mic Placement
Pressure Gradient Capsules
Shure SM81
7. The tuning machines of a guitar; Part of the tuning key that strings are threaded through and twisted.
Stereosonic
Machine Head
RFI
M/S Stereo
8. Overall measurement close to the overall sound level in frequency response charts.
C-Weighting
Faulkner
Diaphragm
Boom
9. 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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10. Raises the body of the microphone increasing height.
Null Angle
Pistonphone
Clutch
Bandpass
11. Derived from two words; 'electr' from electrostatic and 'et' from magnet.
Alan Blumlein
Machine Head
Bass Amp Mic Placement
Electret (Word Etymology)
12. When using multiple microphones - the distance between microphones should be at least 3 times the distance from each microphone to its intended sound source.
Dual Mono
Stereo
3:1 Rule
Speed of Sound Underwater
13. Digital device used to Fourier Forms; Used to measure the specific number of sine waves in a specific frequency in a specific setting.
Phasing
FFT Analyzer
Microphone Care...
Pop Filter
14. Electro- acoustic device attached to a transducer that vibrates to receive or produce sound waves which put the device into motion.
AudioTechnica AT4051
Diaphragm
Georg Neumann
C-Weighting
15. Consumers can listen to live broadcasts over telephone lines; Individual one- way experience that required a subscription service to listen to performances.
Pistonphone
Theatrophone
Shure SM81
Leslie Cabinet
16. 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;
Mono
M/S Stereo
Dynamic Range
Guitar Amp Mic Placement
17. 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.
Diaphragm
Microphone Care...
Alan Blumlein
Pistonphone
18. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Microphone Storage
Magnetic Induction Voltage
Blumlein Pairing
Georg Neumann
19. 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.
Dynamic Microphone
Highpass Filter
Binaural Mic
Trumpet Mic Placement
20. 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.
Shockmount
Distance Factor
Electret (Word Etymology)
Striking
21. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.
Sennheiser MD441
Microphone (Definition)
Shure KSM-353
Model 3B Carbon Microphone
22. Voltage applied to piezoelectric material will cause it to deform or change shape; NO PHANTOM POWER!
Electret (Word Etymology)
Crystal Mic Damage
Angle of Max Rejection
NOS
23. Tough & rugged; Can work in extremely high SPL environments; Less responsive to transient frequencies b/c of diaphragm mass is heavier than sound waves.
Harvey Fletcher
Microphone Storage
Dynamic Mic Characteristics
Shure KSM-353
24. 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.
Frets
Phasing
3:1 Rule
Ribbon Microphone
25. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.
Terry Bozzio
Real Time Analyzer (RTA)
Distance Factor
Vintage Tube Mic Precautions
26. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Spaced Pairs
Crystal & Ceramic Microphones
Shure KSM-353
Neumann CMV3
27. 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.
Altec/Western Electric 639
Coverage Angle
Shure Unidyne Series
Pop Filter
28. Best signal- to- noise ratio; Minimal phase cancellation; Quality representation of what is being recorded; Attempt to ignore unwanted external noise.
Hydrophone
Goals of Sound Effects
Field Mixer
Phasing
29. Very robust and durable; Used in telephones until 1990's; Currently finds applications for military use.
Counterbalance
AudioTechnica AT2020
Rear Sensitivity (Relative to Front)
Carbon Microphone Uses
30. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
OSHA Exposure Table
Clutch
Distance Factor (DSF)
Side Address
31. Big + & - (More front with less opposite rear)
Null Angle
Roll-Off
Leslie Cabinet
Hypercardioid/Supercardioid (Electrical Polar Pattern)
32. 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.
Side Address
Mid/Side
Parabolic Systems
Vintage Tube Mic Precautions
33. Delicate and require extreme care; NO PHANTOM POWER; Becoming more popular than ever because of highly efficient magnets - lower manufacturing costs - and great fidelity.
Neumann CMV3
Altec/Western Electric 639
Ribbon Mic Characteristics
Roll-Off
34. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.
Pistonphone
Telefunken ELA- M251
Baffle
AudioTechnica AT2020
35. 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.
AKG C1000S
Shiny Box 46MXL
Crystal & Ceramic Microphones
Harvey Fletcher
36. Developed the condenser microphone in 1916 at Bell Labs.
Headstock
Protractor & Ruler
E.C. Wente
Crystal and Ceramic Mic Use
37. The property of certain crystals that causes them to produce voltage when a mechanical pressure such as sound vibrations is applied to them; Originates from Greek word 'piezein' (to compress).
Sennheiser e604
Piezoelectric Effect
Sensitivity
Coincident (Definition)
38. Early example of switchable polar patterns; Had both a dynamic and a ribbon capsule inside of it which when combined produced other polar patterns.
Neumann U47
Near Coincident Pair
Altec/Western Electric 639
Crystal & Ceramic Microphones
39. 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.
Ribbon Mic Characteristics
Altec/Western Electric 639
AudioTechnica AT4040
Shure SM57
40. 4 coincident mics each positioned at 90
Protractor & Ruler
LRFB
Field Mixer
Pad
41. Used in adverse conditions to protect from elements like sand - or dust.
Rode NT1A
Clement Ader
Spherical Mic
Wind Screens
42. The first cardioid pattern dynamic microphone.
Subcardioid (Electrical Polar Pattern)
Null Angle
AKG D12
Transient Response
43. Three or more microphones working together to capture a stereo or surround image of the sound source.
Arrays
Casing
Magnetic Induction Formula
Striking
44. 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.
RCA 44BX
Doubling Ribbon Length
Magnetic Induction Formula
MSM
45. Sounds that arrive at the 0
On -Axis
Faraday Cage
Altec/Western Electric 639
Blumlein Pairing
46. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.
Alan Blumlein
Distance Factor
Types of Pre-Amps for Condenser Mics
Sennheiser e604
47. Sounds that arrive from angles other than the 0
Speed of Sound Underwater
DIN
Off-Axis
Neumann KM-84
48. Verify that the boom is placed over a microphone leg prior to use to provide added balance and stability.
Alan Blumlein
Goals of Sound Effects
Boom Placement Rule
LRFB
49. Measurement similar to how our hearing works in frequency response charts.
Electro Voice RE20
Angle of Max Rejection
Terry Bozzio
A-Weighting
50. 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
Guitar Amp Mic Placement
Boom
Clip
Magnetic Induction Formula