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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. 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.
Tuning Keys
Vintage Tube Mic Precautions
Microphone Storage
On -Axis
2. 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.
On -Axis
Georg Neumann
Spaced Pairs
Measurement Mics
3. Captures sounds arriving 90
Pickup
Pressure Gradient Capsules
Parabolic Systems
Arrays
4. 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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5. Consumers can listen to live broadcasts over telephone lines; Individual one- way experience that required a subscription service to listen to performances.
AKG C1000S
Guitar Amp Mic Placement
Theatrophone
Omnidirectional
6. 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.
Pop Filter
Bidirectional
Boom
Carbon Microphone Uses
7. Pure polar pattern with which the microphone is equally sensitive in all directions; Great for capturing ambiance or room reverb.
Examples of Piezoelectric Material
Omnidirectional
Clutch
E.C. Wente
8. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.
Body
Decca Tree
Binaural Mic
Neumann KM 184
9. Stereo coincident pairing where the middle mic (usually a cardiod) is facing source and a bidirectional side mic is placed at 90
Microphone (Definition)
Capacitance
Mid/Side
Boom Placement Rule
10. Voltage applied to piezoelectric material will cause it to deform or change shape; NO PHANTOM POWER!
Crystal Mic Damage
Frets
Faraday Cage
Magnetic Microphone
11. An extremely strong acoustic nano- film designed to replace the foil ribbon in ribbon microphones.
Roswellite
Pickup
Supercardioid
E.C. Wente
12. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Roll-Off
Motor
Over/Over
Bandpass
13. The method by which microphones are classified.
Carbon Microphone Uses
Pickup
Casing
Transducer Type
14. Developed the condenser microphone in 1916 at Bell Labs.
E.C. Wente
Distance Factor (DSF)
NOS
Microphone Storage
15. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
Coincident Pair
Subkick
Shure SM81
Frets
16. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.
Reverse Polarity
Dynamic Microphone
3 Voltages for Phantom Power
Phasing
17. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
Neumann U87
Subcardioid
Distance Factor (DSF)
Subcardioid (Electrical Polar Pattern)
18. Method of creating low end effects from a bass drum by creating a tunnel at the mic end thus trapping sound and amplifying low end boost.
Kick Tunnel
Dynamic Mic Characteristics
Leslie Cabinet
Neumann U67
19. Older ribbon microphone weighing 8.5 lbs. nearly all of it the large magnet!
Fingerboard
Ribbon Mic Characteristics
Null Angle
RCA 44BX
20. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.
Over/Over
Cardioid
Omnidirectional
Transient Response
21. Sounds that arrive at the 0
3 Voltages for Phantom Power
On -Axis
Diaphragm
Cardioid (Electrical Polar Pattern)
22. An instrument for detecting sound transmitted through water commonly manufactured using ceramic piezoelectric material.
Roll-Off
AKG C414
Hydrophone
Microphone Storage
23. Works exactly like condenser mic but one of the two plates is manufactured as a capsule with a permanent static charge so there is no external power source necessary; Requires phantom or battery to charge internal mic preamp.
Cardioid
Stereo
Bandpass
Electret Condenser
24. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Speed of Sound Underwater
3 Voltages for Phantom Power
Neumann CMV3
Noise
25. 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
Blumlein Pairing
Cone
Snare Drum Mic Placement
26. Measurement similar to how our hearing works in frequency response charts.
A-Weighting
Side Address
Subkick
Ambient Sound Sensitivity
27. Coincident pairing angled between 90
Angle of Max Rejection
C-Weighting
Arrays
X/Y
28. 2 - 4 ft. from player; Placed below the line of sight of the bell - rotated at about 30 degrees off axis - and tilted upward.
Trombone Mic Placement
Jecklin Disk
Transducer Type
Types of Field Recording
29. 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.
Distance Factor
Neumann U87
Magnetic Induction Formula
Side Address
30. 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.
Condenser Diaphragm
SASS-P
Polar Pattern
Electro Voice RE20
31. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
M/S Stereo
Body
ORTF
Model 3B Carbon Microphone
32. Angle of maximum signal rejection in a microphone polar pattern.
Shure SM81
Wind Screens
Null Angle
Near Coincident Pair
33. 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.
Magnetic Microphone
Pressure Capsules
Guitar Amp Mic Placement
Decca Tree
34. Solid State and Tube.
Faraday's Law of Magnetic Induction
Stereosonic
Types of Pre-Amps for Condenser Mics
Microphone Storage
35. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Shure KSM-353
Electret (Word Etymology)
DIN
Trombone Mic Placement
36. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
Microphone (Word Etymology)
Binaural Mic
Omnidirectional
Near Coincident Pair
37. When using multiple microphones - the distance between microphones should be at least 3 times the distance from each microphone to its intended sound source.
Crystal Mic Damage
E.C. Wente
3:1 Rule
Neumann U67
38. Divisions on the fingerboard which represent the position of a specific note or tone.
Subcardioid (Electrical Polar Pattern)
Frets
Electret (Word Etymology)
Baffle
39. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.
Supercardioid
Distance Factor
Baffle
AKG D36
40. Bioacoustic Research; Documentary Journalism; Radio; Film/TV Production; Audio Post Production.
Dynamic Mic Characteristics
Types of Field Recording
Spherical Mic
Crystal and Ceramic Mic Use
41. Bell Labs scientist that was an innovator of many spaced pair and arrayed miking techniques.
Harvey Fletcher
Pierre Curie
AB Stereo
Clutch
42. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
Side Address
Boom Placement Rule
Mono
Transient Response
43. Shows the total range of the mic's internal pre- amp; Measured in dB (decibels).
Soundfield
Microphone Care...
Capacitor Microphone
Dynamic Range
44. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser
5 Common Microphone Transducers
Types of Field Recording
Machine Head
Clement Ader
45. An electrical device characterized by its capacity to store an electric charge;
Capacitor
SPL Meter
C-Weighting
Stereosonic
46. Omnidirectional: 360
Motor
Coverage Angle
3:1 Rule
AudioTechnica AT4040
47. - Omnidirectional: 1 - Cardioid: 1.7 - Supercardioid: 1.9 - Hypercardioid: 2 - Bidirectional: 1.7
Distance Factor (DSF)
Polar Pattern
Stereosonic
AKG C1000S
48. 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.
SPL Meter
Noise
3 Voltages for Phantom Power
AudioTechnica AT2020
49. The part of the guitar you turn to tune the strings in order to get the right sound out of the guitar when one plays.
Tuning Keys
Condenser Diaphragm
Vintage Tube Mic Precautions
Neumann KM-84
50. 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
Subkick
Over/Under
Field Mixer