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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. Dynamic; Cardioid; End Address; Manufactured by Shure; Considered the industry standard for live vocal performance microphones; One of the best- selling microphones in the world.
Types of Field Recording
Null Angle
Shure SM58
Motor
2. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
NOS
Microphone (Word Etymology)
LRFB
Microphone (Definition)
3. Sub- frequency (below 100Hz) capture device designed for use with kick drums and floor toms as an alternative or supplement to a traditional microphone.
Omnidirectional
Body
Subkick
Leslie Cabinet
4. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Noise
Damping
Model 3B Carbon Microphone
Bidirectional (Electrical Polar Pattern)
5. + & + (Front & rear in equal positive amounts)
Omnidirectional (Electrical Polar Pattern)
Fukada Tree
Altec/Western Electric 639
Vintage Tube Mic Precautions
6. The tuning machines of a guitar; Part of the tuning key that strings are threaded through and twisted.
Spherical Mic
Machine Head
Dynamic Mic Characteristics
Ambient Sound Sensitivity
7. Microphone consisting of two parallel metal plates - each holding an opposing charge (+ or -) and thus creating a capacitor to induce an electrical charge as sound waves move the diaphragm; Require a solid- state or tube preamplifier.
Cardioid
Condenser Microphone
Microphone Care...
NOS
8. Measurement similar to how our hearing works in frequency response charts.
Bidirectional (Electrical Polar Pattern)
A-Weighting
Alan Blumlein
Fukada Tree
9. 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.
Tube Condenser Microphone
Phase Ports
Shure SM58
AKG C1000S
10. To capture two perspectives on the same sound.
Dual Mono
Pistonphone
Terry Bozzio
Microphone (Word Etymology)
11. Shows the total range of the mic's internal pre- amp; Measured in dB (decibels).
Sennheiser e604
Dynamic Range
Bidirectional
Rudolf Goerike & Ernest Pless
12. 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.
Matched Pairs
Microphone Care...
Capacitance
AKG C12
13. 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
Tuning Keys
Microphone Care...
Polar Pattern
14. Keep in proper case; Never disassemble shockmounts
SASS-P
Matched Pairs
Microphone Storage
Hydrophone
15. Overall measurement close to the overall sound level in frequency response charts.
Parabolic Systems
C-Weighting
LRFB
Stereosonic
16. The head or top of the guitar where the tuning pegs are located.
Headstock
ORTF
OSHA Exposure Table
Legs
17. Small coil of wire wrapped around the plastic or aluminum diaphragm of a dynamic microphone.
Sensitivity
Supercardioid
Voice Coil
Polar Pattern
18. 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.
Ribbon Microphone Sensitivity
Coincident (Definition)
SPL Meter
Examples of Piezoelectric Material
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.
Tube Condenser Microphone
Coincident (Definition)
Goals of Sound Effects
Legs
20. The outer covering of a microphone.
Casing
C-Weighting
Telefunken ELA- M251
Striking
21. Founded AKG at the end of WWII in Austria.
Neumann CMV3
Neumann U87
Capacitance
Rudolf Goerike & Ernest Pless
22. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Neumann KM-84
Percussion Mic Placement
Clement Ader
Baffle
23. Causes an increase in low frequency response as one gets closer to the source.
Neumann U47
Clip
Proximity Effect
Georg Neumann
24. Considered to be the best mic ever made; VF14 Tube.
Crystal Mic Damage
Neumann U47
M/S Stereo
Parabolic Systems
25. Demonstrated the first stereophonic transmissions via the Theatrophone in 1881.
Doubling Ribbon Length
Clement Ader
Binaural Mic
FFT Analyzer
26. Sounds that may be broadcast over the radio or internet.
Reverse Polarity
Mono
Ambient Sound Sensitivity
Angle of Max Rejection
27. Condenser; Multiple; Side Address; 48V Required; Manufactured by AKG; Dual Diaphragm; Nine selectable pickup patterns; Peak Hold LED; The reference microphone for almost all comparative microphone tests.
Microphone Storage
Alan Blumlein
AKG C414
Motor
28. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Baffle
Polar Pattern
Counterbalance
Blumlein Pairing
29. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Guitar Amp Mic Placement
Crystal & Ceramic Microphones
X/Y
Proximity Effect
30. 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
Crystal Mic Damage
Neumann KM 184
Magnetic Induction Formula
Shure Unidyne Series
31. Angle of maximum signal rejection in a microphone polar pattern.
Shure SM58
Polar Pattern
Max SPL
Null Angle
32. An extremely strong acoustic nano- film designed to replace the foil ribbon in ribbon microphones.
Carbon Microphone
Roswellite
End Address
Shure Unidyne Series
33. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Bandpass
Binaural Mic
Distance Factor (DSF)
Baffle
34. 4800 ft/sec
Speed of Sound Underwater
3 Voltages for Phantom Power
Pickup
Angle of Max Rejection
35. Pair of omni mic separated by a circular absorptive baffle.
AKG D36
Jecklin Disk
3 Voltages for Phantom Power
Pascals (Pa)
36. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.
Percussion Mic Placement
RFI
Pressure Capsules
3 Voltages for Phantom Power
37. 2 - 4 ft. from player; Placed below the line of sight of the bell - rotated at about 30 degrees off axis - and tilted upward.
AKG DYN60
Trombone Mic Placement
On -Axis
Alan Blumlein
38. The method by which microphones are classified.
Legs
Lowpass Filter
Trombone Mic Placement
Transducer Type
39. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.
Over/Over
5 Common Microphone Transducers
Neumann U47
Diaphragm
40. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Legs
Neumann KM-84
Striking
Magnetic Induction Voltage
41. Small Diaphragm Electret condensers; Extremely flat frequency response; Omnidirectional pattern.
Sensitivity
SASS-P
Measurement Mics
Boom Placement Rule
42. Measurement of the mic's sensitivity; Measured in mV/Pa (millivolts per Pascal).
Piezoelectric Effect
Sensitivity
Types of Pre-Amps for Condenser Mics
Crystal Mic Damage
43. Dutch broadcasting stereo mic technique; An X-Y type with the mics 30cm apart and at a 90
Shiny Box 46MXL
NOS
Faraday's Law of Magnetic Induction
Carbon Microphone
44. Sensitive in a slightly narrower pattern in the front than cardioid and has a small lobe at rear; Rejects most signals arriving from 125
AKG C414
Clutch
Supercardioid
Stereo Bar
45. Quartz; Barium Titaniate - Tourmaline; Rochelle Salt - and even cane sugar.
Protractor & Ruler
Types of Pre-Amps for Condenser Mics
Nuvistor Tube
Examples of Piezoelectric Material
46. Often look like handheld vocal mics; Talk or sing into the end of the microphone.
End Address
Carbon Microphone
Fundamental Frequency
Sennheiser e604
47. The first AKG dynamic microphone.
OSHA Exposure Table
AKG DYN60
Nuvistor Tube
Subcardioid
48. 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.
AudioTechnica AT4051
Trombone Mic Placement
Magnetic Microphone
Ribbon Microphone
49. Mid-Section of the mic stand; Includes the clutch.
Body
Stereo
Decca Tree
Hypercardioid
50. 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;
Neumann KM-84
Frets
M/S Stereo
Carbon Microphone