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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.
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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 first AKG dynamic microphone.
Fingerboard
Tube Condenser Microphone
AKG DYN60
Microphone Storage
2. 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.
Coincident (Definition)
Spaced Pairs
Cardioid (Electrical Polar Pattern)
Noise
3. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Legs
Model 3B Carbon Microphone
Rudolf Goerike & Ernest Pless
Boom Placement Rule
4. Will yield a 6dB increase in output - but will cause a loss of high frequency response.
Doubling Ribbon Length
Rode NT1A
X/Y
Vintage Tube Mic Precautions
5. 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.
Shure SM58
Altec/Western Electric 639
Theatrophone
AKG C414
6. Responds to air pressure variations outside of the capsule; Not selective of direction; Natural polar pattern is omnidirectional.
Pressure Capsules
Body
Capacitance
Mono
7. Changes in air pressure from the front or the back can cause polarity cancellation; Sides have good rejection; Natural polar pattern is bidirectional.
Neumann KM-84
Crystal Mic Damage
Cardioid (Electrical Polar Pattern)
Pressure Gradient Capsules
8. 4 coincident mics each positioned at 90
Counterbalance
Carbon Microphone Uses
LRFB
Electro Voice RE20
9. Tube manufactured for the new version of the AKG C12 (called the C12-A); Powered by Norelco.
RCA 44BX
Nuvistor Tube
Terry Bozzio
Rear Sensitivity (Relative to Front)
10. Reduces the power of a signal used when the trim itself cannot prevent overload in the mic line level signal.
SPL Meter
Tube Condenser Microphone
Pad
Transducer Type
11. Sounds that arrive from angles other than the 0
Fundamental Frequency
Neumann U87
Off-Axis
On -Axis
12. 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.
Shure SM57
Condenser Microphone
AKG D12
Pressure Gradient Capsules
13. Small Diaphragm Electret condensers; Extremely flat frequency response; Omnidirectional pattern.
Side Address
Shure SM81
Measurement Mics
AudioTechnica AT4040
14. Big + & - (More front with less opposite rear)
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Magnetic Microphone
Binaural Mic
Cardioid (Electrical Polar Pattern)
15. Pure polar pattern that receives sound from both the front and back; Also known as a 'Figure 8' pattern; More proximity effect that Cardioid or Hyper Cardioid; Often found in ribbon mics.
Transducer Type
AudioTechnica AT2020
Tuning Keys
Bidirectional
16. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Very small and compact; Especially suitable for use with drums and brass instruments; Includes a clip to mount directly on drums.
Transducer Type
Snare Drum Mic Placement
Sennheiser e604
C-Weighting
17. + & + (Front & rear in equal positive amounts)
Off-Axis
Distance Factor
Magnetic Induction Formula
Omnidirectional (Electrical Polar Pattern)
18. Voltage applied to piezoelectric material will cause it to deform or change shape; NO PHANTOM POWER!
Dual Mono
Crystal Mic Damage
Omnidirectional (Electrical Polar Pattern)
Percussion Mic Placement
19. 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.
Ribbon Mic Characteristics
Transient Response
Kick Tunnel
Trumpet Mic Placement
20. Used to make sure you have accurate angles & capsule spacing when miking in stereo.
Vintage Tube Mic Precautions
Highpass Filter
Doubling Ribbon Length
Protractor & Ruler
21. Solid State and Tube.
Types of Pre-Amps for Condenser Mics
Measurement Mics
Increasing Output Voltage in Ribbon Mics
Motor
22. Small microphone attached to the bridge of a string bass or to an acoustic guitar to amplify its sound.
LRFB
Leslie Cabinet
Pickup
AKG D12
23. Early example of switchable polar patterns; Had both a dynamic and a ribbon capsule inside of it which when combined produced other polar patterns.
Pistonphone
Pad
Altec/Western Electric 639
Subkick
24. Solid state version of the U67.
Cone
Neumann U87
Condenser Microphone
Altec/Western Electric 639
25. Fixed plate that is charged with polarized voltage found in condenser mics; Usually constructed of milled brass; Has a number of holes drilled in it to provide damping for diaphragm.
Doubling Ribbon Length
Backplate
Striking
Crystal & Ceramic Microphones
26. Stereo configuration using a spaced pair 3-10 feet apart.
Side Address
Interference Tube...
AB Stereo
Backplate
27. 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 Bar
3 Voltages for Phantom Power
Voice Coil
28. The lowest - and usually most intense - frequency of a complex sound; Most often perceived as the sound's basic pitch.
Spaced Pairs
MSM
Diaphragm
Fundamental Frequency
29. 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.
C-Weighting
Faraday Cage
Shockmount
Phasing
30. Rotating speaker cabinet design featuring separate treble and bass drivers that can switch speeds; Speaker rotate from front to back creating a Doppler effect; Resulted in new spatial perception for each note. Stereo miked up top and single miked at
Leslie Cabinet
Altec/Western Electric 639
Legs
MSM
31. Older ribbon microphone weighing 8.5 lbs. nearly all of it the large magnet!
RCA 44BX
Magnetic Induction Formula
Harvey Fletcher
Bandpass
32. 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.
AKG C414
Speed of Sound Underwater
Fundamental Frequency
SASS-P
33. The first phantom powered condenser microphone designed for use by Georg Neumann for Norwegian State Television.
Crystal Mic Damage
3 Voltages for Phantom Power
Neumann KM-84
Rear Sensitivity (Relative to Front)
34. 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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35. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.
Shure KSM-353
Shure Unidyne Series
Shockmount
Guitar Amp Mic Placement
36. The measuring device used for loudspeaker room response testing.
Real Time Analyzer (RTA)
Mono
Capacitor
Phasing
37. 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.
Omnidirectional
Ribbon Microphone
Cone
Neumann KM-84
38. + (only); (Front capsule alone)
Arrays
Cardioid (Electrical Polar Pattern)
Field Mixer
Pistonphone
39. 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
Condenser Microphone
Proximity Effect
AKG DYN60
Magnetic Induction Formula
40. Allows all high frequencies to pass; Blocks the lower frequencies from being processed.
Neumann CMV3
Highpass Filter
Dynamic Microphone
Shure Unidyne Series
41. 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.
Max SPL
Faraday Cage
Magnetic Microphone
Neumann KM-84
42. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Unique mic clip with quick- release button; Large diaphragm dynamic element handles high SPL's - making it great for recording guitars and drums.
Carbon Microphone
Rudolf Goerike & Ernest Pless
Polar Pattern
Sennheiser MD421
43. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.
Mono
Condenser Diaphragm
Terry Bozzio
Shotgun
44. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.
Magnetic Microphone
Ambient Sound Sensitivity
Telefunken ELA- M251
Sennheiser MD441
45. Best signal- to- noise ratio; Minimal phase cancellation; Quality representation of what is being recorded; Attempt to ignore unwanted external noise.
Proximity Effect
Types of Pre-Amps for Condenser Mics
Snare Drum Mic Placement
Goals of Sound Effects
46. - Omnidirectional: 100% - Cardioid: 33% - Supercardioid: 27% - Hypercardioid: 25% - Bidirectional: 33%
Omnidirectional
Ambient Sound Sensitivity
Headstock
Decca Tree
47. Configured to simulate the spacing and directivity of human hearing; Box shape with two 'ears' on each side.
SASS-P
Shotgun
Transducer Type
Neumann KM 184
48. To break down or disassemble any portion of a set or stage set- up.
Striking
Fundamental Frequency
Condenser Microphone
Decca Tree
49. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
Shure SM81
Null Angle
Mid/Side
Omnidirectional (Electrical Polar Pattern)
50. Cable wrapping method that reduces interference and makes it easier to unravel the cable.
Polar Pattern
Casing
Over/Under
Body
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