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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. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.
Clip
Pressure Capsules
Pickup
FFT Analyzer
2. Quartz; Barium Titaniate - Tourmaline; Rochelle Salt - and even cane sugar.
Examples of Piezoelectric Material
Rear Sensitivity (Relative to Front)
DIN
Measurement Mics
3. Another name for condenser microphone.
Shiny Box 46MXL
ORTF
Boom
Capacitor Microphone
4. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
Magnetic Microphone
Magnetic Induction Formula
End Address
Microphone (Word Etymology)
5. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.
X/Y
Shockmount
Counterbalance
Reisz Marble Mic
6. Configured to simulate the spacing and directivity of human hearing; Box shape with two 'ears' on each side.
SASS-P
Omnidirectional
Stereo
Parabolic Systems
7. Used in adverse conditions to protect from elements like sand - or dust.
Wind Screens
Spaced Pairs
Neumann U47
Piezoelectric Effect
8. Sub- frequency (below 100Hz) capture device designed for use with kick drums and floor toms as an alternative or supplement to a traditional microphone.
Shure KSM-353
Headstock
Subkick
Powering Condenser Microphones
9. Coincident pairing angled between 90
X/Y
Neumann U67
Casing
Proximity Effect
10. + & - (Front & rear in opposite equal amounts)
Nuvistor Tube
Clement Ader
Bidirectional (Electrical Polar Pattern)
Magnetic Induction Voltage
11. Used by government agencies to determine safe sound exposure levels (in dB) over a period of time; 85 - 90 dB = 16 hrs. of safe exposure time at 85 dB; Decreases to 8 hrs. of safe exposure time at 90 dB.
Neumann CMV3
Soundfield
Neumann KM-84
OSHA Exposure Table
12. Sensitive in a narrower pattern in the front than a cardioid and has a prominent/pronounced lobe at rear; Rejects most signals from 110
Hypercardioid
Leslie Cabinet
C-Weighting
AKG D36
13. Sounds that arrive from angles other than the 0
Vintage Tube Mic Precautions
Off-Axis
Types of Field Recording
Ribbon Microphone Sensitivity
14. 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.
Rear Sensitivity (Relative to Front)
Harvey Fletcher
Fingerboard
Pad
15. 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.
On -Axis
Piezoelectric Effect
Neumann KM 184
Roll-Off
16. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
Machine Head
Subcardioid
AKG D36
Condenser Diaphragm
17. Digital device used to Fourier Forms; Used to measure the specific number of sine waves in a specific frequency in a specific setting.
Subcardioid (Electrical Polar Pattern)
Fundamental Frequency
Microphone Storage
FFT Analyzer
18. Bell Labs scientist that was an innovator of many spaced pair and arrayed miking techniques.
Polar Pattern
Magnetic Induction Voltage
Harvey Fletcher
Bandpass
19. Determined by: Ribbon Thickness (about 3 to 6 microns); Corrugations/Inch; Tension of the Ribbon.
Ribbon Microphone Sensitivity
Max SPL
Field Mixer
Powering Condenser Microphones
20. Verify that the boom is placed over a microphone leg prior to use to provide added balance and stability.
SASS-P
Shockmount
Boom Placement Rule
Stereo
21. Developed the condenser microphone in 1916 at Bell Labs.
E.C. Wente
Pressure Gradient Capsules
Electret Condenser
OSHA Exposure Table
22. Very robust and durable; Used in telephones until 1990's; Currently finds applications for military use.
AudioTechnica AT4040
Carbon Microphone Uses
Alan Blumlein
Rudolf Goerike & Ernest Pless
23. 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.
AudioTechnica AT4051
Theatrophone
Frets
Kick Tunnel
24. 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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25. Bioacoustic Research; Documentary Journalism; Radio; Film/TV Production; Audio Post Production.
Protractor & Ruler
Motor
Dual Mono
Types of Field Recording
26. The first cardioid pattern dynamic microphone.
Magnetic Microphone
Fukada Tree
AudioTechnica AT4040
AKG D12
27. Tube microphone capable of SPL's over 140dB.
Pascals (Pa)
Telefunken ELA- M251
Neumann U67
Motor
28. Condenser; Cardioid; End Address; 48V Required; Manufactured by AudioTechnica; Switchable 80 Hz Hi-Pass Filter; Ideal for professional recording and critical applications in broadcast.
Dual Mono
Fingerboard
Faraday Cage
AudioTechnica AT4051
29. Measurement of Sound Pressure; stated as being N/m2 with a Newton being a measurement of force equal to about 9.8 lbs; Equal to 94dB SPL
Sensitivity
Pascals (Pa)
Pop Filter
Rode NT1A
30. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.
Stereo Bar
Omnidirectional (Electrical Polar Pattern)
Over/Over
AudioTechnica AT4051
31. - Omnidirectional: 100% - Cardioid: 33% - Supercardioid: 27% - Hypercardioid: 25% - Bidirectional: 33%
Ambient Sound Sensitivity
Pickup
Jecklin Disk
Microphone (Word Etymology)
32. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Bandpass
Coincident (Definition)
Parabolic Systems
Protractor & Ruler
33. 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.
Clement Ader
Protractor & Ruler
Cardioid (Electrical Polar Pattern)
Rode NT1A
34. Used in production sound for multiple perspectives on the set; Used in Audio Post to record a number of mics into a recorder with minimal set- up & tear down.
Field Mixer
RCA 44BX
LRFB
AKG C1000S
35. Omnidirectional: 360
AKG C12
Coverage Angle
Reisz Marble Mic
Model 3B Carbon Microphone
36. Allow sound to reach the rear of the capsule/diaphragm - to create cardioid - supercardioid - and hypercardioid patterns In single capsule pressure gradient microphones.
Highpass Filter
Shure SM58
Phase Ports
Faraday Cage
37. More compelling sound - giving both depth and perspective.
A-Weighting
Pistonphone
Condenser Diaphragm
Stereo
38. Stereo coincident pairing where the middle mic (usually a cardiod) is facing source and a bidirectional side mic is placed at 90
Shure SM58
Mid/Side
Coincident Pair
Headstock
39. Raises the body of the microphone increasing height.
Clutch
Pistonphone
Alan Blumlein
Shure SM58
40. Keep in proper case; Never disassemble shockmounts
Microphone Storage
On -Axis
Microphone (Word Etymology)
Baffle
41. Allows all high frequencies to pass; Blocks the lower frequencies from being processed.
X/Y
Highpass Filter
AudioTechnica AT2020
AKG DYN60
42. Mounts on a single stand to provide for adjustable spacing and angling between mics.
Percussion Mic Placement
Magnetic Induction Formula
Stereo Bar
Ribbon Mic Characteristics
43. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Trombone Mic Placement
Rudolf Goerike & Ernest Pless
Blumlein Pairing
Neumann KM-84
44. 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.
Coincident (Definition)
Casing
Dynamic Mic Characteristics
Capacitance
45. Used to make sure you have accurate angles & capsule spacing when miking in stereo.
Headstock
Omnidirectional (Electrical Polar Pattern)
Protractor & Ruler
Shure Unidyne Series
46. Solid State and Tube.
Types of Pre-Amps for Condenser Mics
Ambient Sound Sensitivity
Clement Ader
Decca Tree
47. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Crystal & Ceramic Microphones
Mono
AudioTechnica AT4040
Cardioid (Electrical Polar Pattern)
48. 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
Capacitor
Harvey Fletcher
Magnetic Induction Formula
Leslie Cabinet
49. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser
Dynamic Microphone
Pad
End Address
5 Common Microphone Transducers
50. Divisions on the fingerboard which represent the position of a specific note or tone.
M/S Stereo
Electret (Word Etymology)
Frets
Pad