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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. 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.
Harvey Fletcher
Cone
Condenser Diaphragm
3 Voltages for Phantom Power
2. Voltage applied to piezoelectric material will cause it to deform or change shape; NO PHANTOM POWER!
Angle of Max Rejection
Crystal Mic Damage
Pad
SASS-P
3. Another name for condenser microphone.
Capacitor Microphone
Proximity Effect
Machine Head
Examples of Piezoelectric Material
4. Often look like handheld vocal mics; Talk or sing into the end of the microphone.
Nuvistor Tube
Boom
End Address
Shure KSM-353
5. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.
Reverse Polarity
Pressure Capsules
Microphone Care...
Hypercardioid
6. The head or top of the guitar where the tuning pegs are located.
Capacitor Microphone
Mid/Side
Headstock
Doubling Ribbon Length
7. 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
Shure KSM-353
Subcardioid (Electrical Polar Pattern)
Lowpass Filter
Faraday Cage
8. 4 coincident mics each positioned at 90
Sennheiser MD441
LRFB
Shiny Box 46MXL
Electret Condenser
9. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.
Capacitor
Altec/Western Electric 639
Parabolic Systems
Baffle
10. French physicist who pioneered piezoelectricity.
Pierre Curie
Electret (Word Etymology)
Model 3B Carbon Microphone
Transient Response
11. Reduces the power of a signal used when the trim itself cannot prevent overload in the mic line level signal.
Carbon Microphone
Neumann CMV3
Noise
Pad
12. + & - (Front & rear in opposite equal amounts)
Bidirectional (Electrical Polar Pattern)
Cone
Microphone Care...
RCA 44BX
13. Older ribbon microphone weighing 8.5 lbs. nearly all of it the large magnet!
RCA 44BX
Phase Ports
Powering Condenser Microphones
M/S Stereo
14. 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.
Stereo
Shiny Box 46MXL
Cone
Sennheiser MD421
15. 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.
Subkick
DIN
Ribbon Microphone
Body
16. Coincident pairing angled between 90
Neumann U87
Polar Pattern
X/Y
Tuning Keys
17. Pure polar pattern with which the microphone is equally sensitive in all directions; Great for capturing ambiance or room reverb.
Protractor & Ruler
Mid/Side
Binaural Mic
Omnidirectional
18. Most sensitive to sounds arriving from the front while rejecting sounds from rear; Shaped like a heart; Rejects most signals from 180
FFT Analyzer
Cardioid
AKG DYN60
Carbon Microphone Uses
19. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Blumlein Pairing
Vintage Tube Mic Precautions
Faraday's Law of Magnetic Induction
AudioTechnica AT4051
20. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
AKG C12
DIN
AB Stereo
Field Mixer
21. 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.
Ribbon Microphone
5 Common Microphone Transducers
Rode NT1A
SASS-P
22. Commonly utilize large diaphragm dynamic mics.
MSM
Null Angle
Coverage Angle
Bass Amp Mic Placement
23. 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.
Phasing
RCA 44BX
Microphone Care...
Counterbalance
24. Small Diaphragm Electret condensers; Extremely flat frequency response; Omnidirectional pattern.
Microphone (Definition)
A-Weighting
Counterbalance
Measurement Mics
25. 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;
Ribbon Microphone Sensitivity
5 Common Microphone Transducers
M/S Stereo
Shotgun
26. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Body
Shotgun
AKG C12
Magnetic Induction Voltage
27. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.
Distance Factor (DSF)
Shockmount
Spherical Mic
Altec/Western Electric 639
28. Big + & - (More front with less opposite rear)
Tube Condenser Microphone
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Neumann CMV3
Telefunken ELA- M251
29. First microphone invented by Georg Neumann
Max SPL
Hydrophone
Reisz Marble Mic
AudioTechnica AT4051
30. Cable wrapping method that reduces interference and makes it easier to unravel the cable.
Clip
Subcardioid
NOS
Over/Under
31. Mics placed in front of an instrument or ensemble (in a left/right fashion) to obtain an overall stereo image; Sound more open and natural; Weaker center image than X/Y; Great for creating background sounds that will blend in with foreground sounds.
ORTF
Doubling Ribbon Length
Spaced Pairs
Binaural Mic
32. 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
Distance Factor
Faraday's Law of Magnetic Induction
Magnetic Induction Formula
Telefunken ELA- M251
33. 12V DC; 24V DC; 48V DC
Ambient Sound Sensitivity
3 Voltages for Phantom Power
Microphone Care...
Mid/Side
34. Moving a conductor (a coil of wire) through a magnetic field will cause a voltage to be induced across the conductor.
35. Small microphone attached to the bridge of a string bass or to an acoustic guitar to amplify its sound.
Decca Tree
Percussion Mic Placement
Pickup
Neumann KM 184
36. Tough & rugged; Can work in extremely high SPL environments; Less responsive to transient frequencies b/c of diaphragm mass is heavier than sound waves.
Wind Screens
AudioTechnica AT2020
Cone
Dynamic Mic Characteristics
37. The graphic representation plot of the sensitivity of a microphone from any direction over a 360
Neumann CMV3
Polar Pattern
AudioTechnica AT2020
Types of Pre-Amps for Condenser Mics
38. Condenser; Cardioid; End Address; 48V Required; Manufactured by Neumann; Consists of three compact miniature microphones; Has a gentle rise at about 9 kHz that provides tonal balance that is fresher and livelier.
Neumann KM 184
AudioTechnica AT4051
A-Weighting
Lowpass Filter
39. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Dynamic Range
Trumpet Mic Placement
Percussion Mic Placement
Pascals (Pa)
40. 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.
X/Y
Shure SM58
Condenser Microphone
SPL Meter
41. 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.
Stereo Bar
Fukada Tree
MSM
Lowpass Filter
42. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Diaphragm
M/S Stereo
Backplate
Bandpass
43. 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.
Model 3B Carbon Microphone
Body
Tuning Keys
Pistonphone
44. The first dynamic microphone with changeable polar patterns.
AKG D36
Rear Sensitivity (Relative to Front)
Dynamic Mic Characteristics
Neumann CMV3
45. + & + (Front & rear in equal positive amounts)
SPL Meter
Neumann U67
Omnidirectional (Electrical Polar Pattern)
Examples of Piezoelectric Material
46. A stereo miking technique similar to coincident pair - where the mics are set up with some distance between them; Distance and angle of microphones may differ; Creates a more defined stereo image; Produces very sharp images; Provides more 'air'.
AKG DYN60
Near Coincident Pair
Telefunken ELA- M251
Pistonphone
47. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.
Powering Condenser Microphones
Lowpass Filter
Pressure Gradient Capsules
Dynamic Microphone
48. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.
Null Angle
Alan Blumlein
Sennheiser MD421
Subcardioid
49. An instrument for detecting sound transmitted through water commonly manufactured using ceramic piezoelectric material.
Shure SM58
Hydrophone
Striking
AudioTechnica AT4051
50. The measuring device used for loudspeaker room response testing.
Real Time Analyzer (RTA)
AKG D12
Supercardioid
Fukada Tree