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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. Tough & rugged; Can work in extremely high SPL environments; Less responsive to transient frequencies b/c of diaphragm mass is heavier than sound waves.
Angle of Max Rejection
Crystal & Ceramic Microphones
Shure SM57
Dynamic Mic Characteristics
2. 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.
Off-Axis
AudioTechnica AT2020
Trumpet Mic Placement
Tuning Keys
3. 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
Mono
Body
Leslie Cabinet
Hypercardioid
4. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
Subcardioid
Tuning Keys
Damping
Real Time Analyzer (RTA)
5. The first dynamic microphone with changeable polar patterns.
Coverage Angle
Legs
Capacitor
AKG D36
6. Allow sound to reach the rear of the capsule/diaphragm - to create cardioid - supercardioid - and hypercardioid patterns In single capsule pressure gradient microphones.
Neumann U47
C-Weighting
Mono
Phase Ports
7. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Noise
Omnidirectional
Neumann U47
5 Common Microphone Transducers
8. 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.
Baffle
Alan Blumlein
Parabolic Systems
Field Mixer
9. 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.
Georg Neumann
AKG DYN60
Crystal & Ceramic Microphones
Terry Bozzio
10. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
Nuvistor Tube
Boom
Faraday Cage
Arrays
11. 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.
DIN
Neumann CMV3
Packing
Bidirectional
12. 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.
RCA 44BX
Fingerboard
Snare Drum Mic Placement
Condenser Diaphragm
13. Configured to simulate the spacing and directivity of human hearing; Box shape with two 'ears' on each side.
Distance Factor (DSF)
Shure KSM-353
SASS-P
Coincident Pair
14. 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.
Dynamic Mic Characteristics
Fingerboard
Tube Condenser Microphone
Vintage Tube Mic Precautions
15. Overall measurement close to the overall sound level in frequency response charts.
Rode NT1A
Real Time Analyzer (RTA)
Microphone Care...
C-Weighting
16. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Over/Under
Interference Tube...
RFI
Magnetic Induction Voltage
17. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.
Over/Over
Electret Condenser
AKG D36
Noise
18. The measure of how quickly a mic's diaphragm will react when it is hit by an acoustic sound wave.
Pickup
Pop Filter
Clement Ader
Transient Response
19. The measuring device used for loudspeaker room response testing.
Snare Drum Mic Placement
Real Time Analyzer (RTA)
Parabolic Systems
Capacitance
20. Will yield a 6dB increase in output - but will cause a loss of high frequency response.
Supercardioid
Baffle
Parabolic Systems
Doubling Ribbon Length
21. The property of certain crystals that causes them to produce voltage when a mechanical pressure such as sound vibrations is applied to them; Originates from Greek word 'piezein' (to compress).
Piezoelectric Effect
Interference Tube...
Frets
Hypercardioid/Supercardioid (Electrical Polar Pattern)
22. Allows all high frequencies to pass; Blocks the lower frequencies from being processed.
Highpass Filter
Magnetic Induction Formula
Cone
C-Weighting
23. 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'.
Near Coincident Pair
Over/Under
Shiny Box 46MXL
DIN
24. 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.
C-Weighting
Piezoelectric Effect
Counterbalance
Kick Tunnel
25. Occupying the same space and time.
Subcardioid
Clement Ader
Coincident (Definition)
Wind Screens
26. Omnidirectional: N/ - Cardioid: 180
Angle of Max Rejection
Percussion Mic Placement
Pad
Reisz Marble Mic
27. Coincident stereo miking techniques that has two microphone diaphragms occupying (as near as possible) the same space; Capsules often on top of each other; Not good for noisy locations.
Fukada Tree
Boom
Over/Under
Coincident Pair
28. Omnidirectional: 360
Frets
Coverage Angle
Capacitance
Sealed Ni-Cad Battery
29. When using multiple microphones - the distance between microphones should be at least 3 times the distance from each microphone to its intended sound source.
Ambient Sound Sensitivity
Sennheiser MD441
Counterbalance
3:1 Rule
30. Phenomenon causing carbon microphones to lose sensitivity as granules become packed together over extended use; To remedy problem mic is gently rapped on hard surface.
Packing
AudioTechnica AT4040
Diaphragm
Neumann CMV3
31. An electrical device characterized by its capacity to store an electric charge;
Capacitor
Distance Factor
Frets
Omnidirectional
32. Big + & + (More front with less positive rear)
Headstock
Examples of Piezoelectric Material
Subcardioid (Electrical Polar Pattern)
Altec/Western Electric 639
33. Coincident pairing angled between 90
Ambient Sound Sensitivity
Ribbon Microphone
Noise
X/Y
34. Cable wrapping method that reduces interference and makes it easier to unravel the cable.
Over/Under
Casing
Ribbon Mic Characteristics
AudioTechnica AT4040
35. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
C-Weighting
Side Address
X/Y
Pop Filter
36. Commonly found in acoustic guitar pickups; Ceramic piezoelectric material is used in hydrophones (underwater mics) because of durability.
Transient Response
Crystal and Ceramic Mic Use
Condenser Microphone
Damping
37. 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.
Measurement Mics
Sennheiser e604
Capacitance
Stereo
38. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Crystal & Ceramic Microphones
Roswellite
Neumann KM-84
Arrays
39. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Bandpass
Neumann U87
Striking
Side Address
40. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser
5 Common Microphone Transducers
Matched Pairs
Georg Neumann
Electret Condenser
41. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Machine Head
DIN
Spaced Pairs
Roswellite
42. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Spherical Mic
Altec/Western Electric 639
Motor
Pressure Capsules
43. Omnidirectional: 0 - Cardioid: 8 - Supercardioid: 12 dB - Hypercardioid: 6 dB - Bidirectional: 0
Omnidirectional (Electrical Polar Pattern)
Bidirectional (Electrical Polar Pattern)
Rear Sensitivity (Relative to Front)
Capacitance
44. A 3- mic array using omni mics with left - right and center placement; Center is placed about 5 ft. closer to the source to eliminate 'holes' in the middle and the center levels are reduced for an even sound; Forms a triangle.
AB Stereo
Protractor & Ruler
Decca Tree
Polar Pattern
45. Mid-Section of the mic stand; Includes the clutch.
Faraday Cage
Rudolf Goerike & Ernest Pless
Body
Capacitor
46. 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.
Examples of Piezoelectric Material
Coincident Pair
Microphone Care...
Wind Screens
47. Sub- frequency (below 100Hz) capture device designed for use with kick drums and floor toms as an alternative or supplement to a traditional microphone.
AKG DYN60
Motor
Spherical Mic
Subkick
48. Causes an increase in low frequency response as one gets closer to the source.
Jecklin Disk
Capacitor
Proximity Effect
Phase Ports
49. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.
AudioTechnica AT2020
Telefunken ELA- M251
Trombone Mic Placement
Decca Tree
50. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.
Rode NT1A
Sennheiser MD441
Side Address
Types of Field Recording