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Test your basic knowledge |
Microphones Theory
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Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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. Mounts on a single stand to provide for adjustable spacing and angling between mics.
Noise
Subcardioid
Increasing Output Voltage in Ribbon Mics
Stereo Bar
2. More compelling sound - giving both depth and perspective.
Pierre Curie
Mid/Side
Terry Bozzio
Stereo
3. Omnidirectional: 360
Legs
Over/Over
Lowpass Filter
Coverage Angle
4. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Neumann U47
Spherical Mic
Fundamental Frequency
Altec/Western Electric 639
5. Tube microphone capable of SPL's over 140dB.
Binaural Mic
Jecklin Disk
Neumann U67
MSM
6. Mic in which the diaphragm moves in response to sound waves and an attached pin/rod moves; Coil attached to pin/rod moves alone with the diaphragm.
Shure KSM Series
Vintage Tube Mic Precautions
Magnetic Microphone
Electret (Word Etymology)
7. Allows all high frequencies to pass; Blocks the lower frequencies from being processed.
Tuning Keys
On -Axis
FFT Analyzer
Highpass Filter
8. When using multiple microphones - the distance between microphones should be at least 3 times the distance from each microphone to its intended sound source.
5 Common Microphone Transducers
3:1 Rule
Damping
Fundamental Frequency
9. 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
Stereo
Hypercardioid
Magnetic Microphone
10. 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.
Voice Coil
Shure Unidyne Series
Stereo
Georg Neumann
11. 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
Stereo
Pascals (Pa)
Guitar Amp Mic Placement
Decca Tree
12. Shure's newer ribbon studio mics; KSM 353 & 313 (Roswellite); KSM 44 - 32 - & 27.
Polar Pattern
Shure KSM Series
ORTF
OSHA Exposure Table
13. 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.
Subcardioid (Electrical Polar Pattern)
Condenser Diaphragm
Fingerboard
Alan Blumlein
14. Very robust and durable; Used in telephones until 1990's; Currently finds applications for military use.
Binaural Mic
E.C. Wente
Magnetic Microphone
Carbon Microphone Uses
15. Considered to be the best mic ever made; VF14 Tube.
Neumann U47
Parabolic Systems
5 Common Microphone Transducers
Leslie Cabinet
16. To capture two perspectives on the same sound.
Crystal Mic Damage
Snare Drum Mic Placement
Dual Mono
Ambient Sound Sensitivity
17. Coincident pairing angled between 90
Soundfield
X/Y
Percussion Mic Placement
Frets
18. The combination of the ribbon and magnet in a ribbon microphone.
Proximity Effect
Interference Tube...
RCA 44BX
Motor
19. Used to filter heating current in certain mics; Invented by Georg Neumann.
Ribbon Mic Characteristics
Harvey Fletcher
Polar Pattern
Sealed Ni-Cad Battery
20. The measuring device used for loudspeaker room response testing.
Transducer Type
Tube Condenser Microphone
Real Time Analyzer (RTA)
Reisz Marble Mic
21. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.
AudioTechnica AT4040
Condenser Microphone
OSHA Exposure Table
Diaphragm
22. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
ORTF
Max SPL
Snare Drum Mic Placement
Matched Pairs
23. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.
Distance Factor
Crystal and Ceramic Mic Use
Counterbalance
Binaural Mic
24. 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.
Distance Factor (DSF)
Spaced Pairs
MSM
Pressure Gradient Capsules
25. Will yield a 6dB increase in output - but will cause a loss of high frequency response.
Packing
Fingerboard
Shure SM58
Doubling Ribbon Length
26. Omnidirectional: N/ - Cardioid: 180
Shure SM57
Condenser Diaphragm
Distance Factor (DSF)
Angle of Max Rejection
27. 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.
Angle of Max Rejection
Goals of Sound Effects
MSM
Sealed Ni-Cad Battery
28. Used for stereo miking to ensure correct balance and imaging.
Diaphragm
Clip
Carbon Microphone
Matched Pairs
29. 12V DC; 24V DC; 48V DC
3 Voltages for Phantom Power
Off-Axis
Voice Coil
Spaced Pairs
30. Device or transducer used for converting sound waves or acoustical energy into electrical energy
Carbon Microphone Uses
Dynamic Mic Characteristics
Condenser Microphone
Microphone (Definition)
31. 2 - 4 ft. from player; Placed below the line of sight of the bell - rotated at about 30 degrees off axis - and tilted upward.
Protractor & Ruler
Bidirectional
Trombone Mic Placement
Noise
32. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.
MSM
Faraday's Law of Magnetic Induction
Dynamic Microphone
RFI
33. Known as 'The Bottle' this was the first mass - produced condenser mic.
Arrays
Soundfield
Neumann CMV3
OSHA Exposure Table
34. 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.
Voice Coil
Max SPL
Neumann KM 184
Coincident Pair
35. The first AKG dynamic microphone.
Rudolf Goerike & Ernest Pless
Types of Field Recording
AKG DYN60
Piezoelectric Effect
36. A gradual - continuous decrease in low frequency response.
Shotgun
Roll-Off
Clement Ader
Over/Over
37. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
Reisz Marble Mic
AudioTechnica AT2020
Boom
Clement Ader
38. 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.
Damping
On -Axis
ORTF
Phasing
39. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.
Rudolf Goerike & Ernest Pless
Tuning Keys
Sennheiser MD441
Nuvistor Tube
40. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Interference Tube...
Crystal Mic Damage
DIN
RCA 44BX
41. Mid-Section of the mic stand; Includes the clutch.
Arrays
Body
Bandpass
Baffle
42. 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
Snare Drum Mic Placement
Magnetic Induction Formula
Shure KSM Series
Rear Sensitivity (Relative to Front)
43. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
Stereosonic
Shure SM81
Interference Tube...
Packing
44. An extremely strong acoustic nano- film designed to replace the foil ribbon in ribbon microphones.
Boom Placement Rule
Roswellite
Subcardioid
Stereosonic
45. Sub- frequency (below 100Hz) capture device designed for use with kick drums and floor toms as an alternative or supplement to a traditional microphone.
Damping
Subkick
Rear Sensitivity (Relative to Front)
Condenser Microphone
46. 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
Magnetic Microphone
Alan Blumlein
SPL Meter
47. Radio Frequency Interference
RFI
Roswellite
Diaphragm
Side Address
48. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
Side Address
Bidirectional (Electrical Polar Pattern)
Rode NT1A
C-Weighting
49. Adds two outer right and left rear facing mics to a Decca tree for surround sound depth.
Sennheiser MD441
Leslie Cabinet
Boom Placement Rule
Fukada Tree
50. 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.
Alan Blumlein
Stereosonic
Binaural Mic
Shure SM58
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