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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. 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
Protractor & Ruler
Packing
Fingerboard
2. 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
Coverage Angle
AKG C414
3:1 Rule
3. 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.
AudioTechnica AT2020
Piezoelectric Effect
Over/Under
Baffle
4. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Ribbon Microphone Sensitivity
Spherical Mic
AKG D12
Shure KSM Series
5. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
Boom
Faulkner
Spherical Mic
Legs
6. Tube with ports down the side with the mic capsule at the bottom; Sounds entering the tube from on - axis interact inside the tube with the sounds coming in through the side ports - an interfere with each other in such a way as to partially cancel of
Dynamic Mic Characteristics
Boom
Interference Tube...
Theatrophone
7. The attachment that holds a microphone in place on the mic stand; Comes in various shapes - sizes - and applications.
Sennheiser MD421
Cone
Lowpass Filter
Clip
8. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
Diaphragm
ORTF
Rode NT1A
Dynamic Microphone
9. Used in adverse conditions to protect from elements like sand - or dust.
Dynamic Mic Characteristics
Wind Screens
Vintage Tube Mic Precautions
Sennheiser e604
10. Developed the condenser microphone in 1916 at Bell Labs.
E.C. Wente
Subkick
Sennheiser MD441
Roll-Off
11. Determined by: Ribbon Thickness (about 3 to 6 microns); Corrugations/Inch; Tension of the Ribbon.
Shure SM81
Proximity Effect
Neumann KM 184
Ribbon Microphone Sensitivity
12. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.
AudioTechnica AT4040
Coincident Pair
Carbon Microphone
Rode NT1A
13. Tough & rugged; Can work in extremely high SPL environments; Less responsive to transient frequencies b/c of diaphragm mass is heavier than sound waves.
Dynamic Mic Characteristics
Shotgun
Boom
E.C. Wente
14. An electrical device characterized by its capacity to store an electric charge;
Capacitor
Jecklin Disk
OSHA Exposure Table
Pickup
15. Big + & - (More front with less opposite rear)
Bidirectional
Cardioid (Electrical Polar Pattern)
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Carbon Microphone
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
Bidirectional (Electrical Polar Pattern)
Crystal and Ceramic Mic Use
17. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.
Bass Amp Mic Placement
Lowpass Filter
A-Weighting
Nuvistor Tube
18. One of the world's greatest condenser microphones prized for the CK12 capsule.
AudioTechnica AT4051
Crystal and Ceramic Mic Use
Leslie Cabinet
AKG C12
19. 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.
Vintage Tube Mic Precautions
Tube Condenser Microphone
Fundamental Frequency
Shure KSM Series
20. Omnidirectional: 0 - Cardioid: 8 - Supercardioid: 12 dB - Hypercardioid: 6 dB - Bidirectional: 0
Highpass Filter
Rear Sensitivity (Relative to Front)
5 Common Microphone Transducers
Fukada Tree
21. Used for stereo miking to ensure correct balance and imaging.
Matched Pairs
Roswellite
Phasing
MSM
22. This is what is measured to produce an electrical signal in condenser mics; This changes as sound waves strike the diaphragm causing the distance to the back plate to change.
Capacitance
Powering Condenser Microphones
Pierre Curie
Guitar Amp Mic Placement
23. The first AKG dynamic microphone.
AKG DYN60
Theatrophone
Microphone (Definition)
Pistonphone
24. 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.
Diaphragm
Coincident Pair
Altec/Western Electric 639
Measurement Mics
25. Verify that the boom is placed over a microphone leg prior to use to provide added balance and stability.
Boom Placement Rule
Electret Condenser
Neumann KM 184
Doubling Ribbon Length
26. - Omnidirectional: 100% - Cardioid: 33% - Supercardioid: 27% - Hypercardioid: 25% - Bidirectional: 33%
Dynamic Mic Characteristics
Bass Amp Mic Placement
Ambient Sound Sensitivity
Roll-Off
27. Very robust and durable; Used in telephones until 1990's; Currently finds applications for military use.
RFI
Carbon Microphone Uses
Kick Tunnel
Pressure Gradient Capsules
28. 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.
Crystal and Ceramic Mic Use
Faulkner
AKG D36
Fingerboard
29. The first dynamic microphone with changeable polar patterns.
Noise
Diaphragm
AKG D36
Bandpass
30. Angle of maximum signal rejection in a microphone polar pattern.
Cardioid
Null Angle
Subcardioid (Electrical Polar Pattern)
AB Stereo
31. Reduces the power of a signal used when the trim itself cannot prevent overload in the mic line level signal.
Max SPL
Subkick
Pad
FFT Analyzer
32. + & + (Front & rear in equal positive amounts)
Hydrophone
Omnidirectional (Electrical Polar Pattern)
Doubling Ribbon Length
Soundfield
33. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Dynamic Microphone
Omnidirectional (Electrical Polar Pattern)
Model 3B Carbon Microphone
Backplate
34. 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.
Boom
Pascals (Pa)
AudioTechnica AT4051
Shotgun
35. 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;
Microphone Storage
Pickup
Arrays
Carbon Microphone
36. Sounds that may be broadcast over the radio or internet.
Tube Condenser Microphone
Mono
Shure Unidyne Series
Types of Field Recording
37. The method by which microphones are classified.
Transducer Type
AKG C12
Dynamic Mic Characteristics
Faraday Cage
38. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
E.C. Wente
AKG C414
Bandpass
Legs
39. Part of a mic stand that the mic stands on.
Stereo Bar
Pickup
Legs
Bandpass
40. Pure polar pattern that receives sound from both the front and back; Also known as a 'Figure 8' pattern; More proximity effect that Cardioid or Hyper Cardioid; Often found in ribbon mics.
Boom
Neumann U87
Speed of Sound Underwater
Bidirectional
41. Solid State and Tube.
Types of Pre-Amps for Condenser Mics
Model 3B Carbon Microphone
Faraday's Law of Magnetic Induction
Tube Condenser Microphone
42. Overall measurement close to the overall sound level in frequency response charts.
Sennheiser MD421
C-Weighting
Types of Field Recording
Carbon Microphone
43. The lowest - and usually most intense - frequency of a complex sound; Most often perceived as the sound's basic pitch.
AudioTechnica AT4040
Null Angle
Decca Tree
Fundamental Frequency
44. Tube manufactured for the new version of the AKG C12 (called the C12-A); Powered by Norelco.
Side Address
Sennheiser e604
Motor
Nuvistor Tube
45. Known as 'The Bottle' this was the first mass - produced condenser mic.
Omnidirectional (Electrical Polar Pattern)
Diaphragm
Condenser Microphone
Neumann CMV3
46. Shows the max sound pressure level possible with a certain amount of distortion; Measured in dB (decibels).
Measurement Mics
Max SPL
Capacitor
Speed of Sound Underwater
47. An electromagnetic microphone - in which a thin - corrugated ribbon is suspended within a high magnetic flux field; Excellent transient response due to the small amount of acoustic energy required to move diaphragm.
Frets
E.C. Wente
Ribbon Microphone
Tube Condenser Microphone
48. DC Voltage Req'd for capsule polarizing voltage and internal mic preamps; 3 sources: External Power Supply Unit (PSU); Phantom Power; Battery.
Powering Condenser Microphones
Wind Screens
A-Weighting
Reisz Marble Mic
49. 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.
Backplate
Shure SM81
NOS
Types of Field Recording
50. 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;
Subcardioid (Electrical Polar Pattern)
Pistonphone
Striking
M/S Stereo