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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.
Dynamic Microphone
Pressure Capsules
ORTF
Voice Coil
2. 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
Sennheiser e604
Clip
X/Y
Magnetic Induction Formula
3. 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.
Dual Mono
Telefunken ELA- M251
AKG D12
Condenser Microphone
4. + (only); (Front capsule alone)
SPL Meter
Dynamic Microphone
Cardioid (Electrical Polar Pattern)
Microphone (Definition)
5. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
Leslie Cabinet
Percussion Mic Placement
Side Address
Neumann KM-84
6. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
Faraday's Law of Magnetic Induction
Shure SM81
Sennheiser MD441
Electro Voice RE20
7. 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.
Decca Tree
Rode NT1A
Legs
Mono
8. 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.
Subkick
Packing
Clement Ader
FFT Analyzer
9. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser
RFI
Pop Filter
Shotgun
5 Common Microphone Transducers
10. Omnidirectional: 0 - Cardioid: 8 - Supercardioid: 12 dB - Hypercardioid: 6 dB - Bidirectional: 0
Null Angle
OSHA Exposure Table
Carbon Microphone Uses
Rear Sensitivity (Relative to Front)
11. Omnidirectional: 360
Coverage Angle
Capacitor
Rode NT1A
Telefunken ELA- M251
12. Verify that the boom is placed over a microphone leg prior to use to provide added balance and stability.
Faraday's Law of Magnetic Induction
Tube Condenser Microphone
Capacitor
Boom Placement Rule
13. Mounts on a single stand to provide for adjustable spacing and angling between mics.
Speed of Sound Underwater
Stereo Bar
Pop Filter
Percussion Mic Placement
14. Increasing magnetic field strength is the only practical means of increasing output voltage; Conductor movement is limited due to tension of the ribbon; and ribbon length increases lead to a loss of high frequency response.
RCA 44BX
Shure KSM Series
Increasing Output Voltage in Ribbon Mics
Off-Axis
15. 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.
Neumann U47
Backplate
OSHA Exposure Table
Matched Pairs
16. Sub- frequency (below 100Hz) capture device designed for use with kick drums and floor toms as an alternative or supplement to a traditional microphone.
Subkick
AKG C1000S
Snare Drum Mic Placement
Ribbon Mic Characteristics
17. Allows all high frequencies to pass; Blocks the lower frequencies from being processed.
Highpass Filter
Neumann KM 184
AudioTechnica AT4051
Side Address
18. 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.
Backplate
On -Axis
Cone
Transducer Type
19. The graphic representation plot of the sensitivity of a microphone from any direction over a 360
Polar Pattern
Pascals (Pa)
Types of Pre-Amps for Condenser Mics
Pressure Capsules
20. The head or top of the guitar where the tuning pegs are located.
Frets
Percussion Mic Placement
Magnetic Microphone
Headstock
21. An instrument for detecting sound transmitted through water commonly manufactured using ceramic piezoelectric material.
Hydrophone
Microphone Care...
Spaced Pairs
Faulkner
22. Condenser; Cardioid; Side Address; 48V Required; Manufactured by AudioTechnica; Ideal for project/home- studio applications; Low price; Remains the low cost performance standard in side- address condenser mics.
AB Stereo
AudioTechnica AT2020
C-Weighting
Reisz Marble Mic
23. Sounds that arrive at the 0
Distance Factor
Decca Tree
On -Axis
5 Common Microphone Transducers
24. + & - (Front & rear in opposite equal amounts)
Baffle
Bidirectional (Electrical Polar Pattern)
Matched Pairs
Max SPL
25. The tuning machines of a guitar; Part of the tuning key that strings are threaded through and twisted.
Machine Head
Speed of Sound Underwater
3:1 Rule
Transient Response
26. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
M/S Stereo
Boom
Shure SM57
Pistonphone
27. Shows the max sound pressure level possible with a certain amount of distortion; Measured in dB (decibels).
Fukada Tree
Blumlein Pairing
Max SPL
Null Angle
28. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.
Faraday Cage
Dynamic Microphone
AudioTechnica AT4040
Shure KSM-353
29. Three or more microphones working together to capture a stereo or surround image of the sound source.
Condenser Microphone
Ribbon Microphone
Sensitivity
Arrays
30. Stereo configuration using a spaced pair 3-10 feet apart.
AKG C12
Lowpass Filter
Ribbon Microphone Sensitivity
AB Stereo
31. The first AKG dynamic microphone.
Omnidirectional
Clement Ader
AKG DYN60
Percussion Mic Placement
32. Device used to calibrate sound pressure measurement devices; Emits a single 1 kHz frequency over a sustained period of time.
Ribbon Microphone
Neumann KM 184
Pistonphone
MSM
33. 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.
Neumann CMV3
Capacitor Microphone
Sennheiser e604
Stereosonic
34. 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.
Spherical Mic
Theatrophone
Spaced Pairs
Speed of Sound Underwater
35. The measure of how quickly a mic's diaphragm will react when it is hit by an acoustic sound wave.
AKG D36
Supercardioid
Motor
Transient Response
36. Commonly utilize large diaphragm dynamic mics.
Clement Ader
Proximity Effect
OSHA Exposure Table
Bass Amp Mic Placement
37. Commonly found in acoustic guitar pickups; Ceramic piezoelectric material is used in hydrophones (underwater mics) because of durability.
Machine Head
Crystal and Ceramic Mic Use
Tube Condenser Microphone
Trumpet Mic Placement
38. Often look like handheld vocal mics; Talk or sing into the end of the microphone.
Mid/Side
Phasing
Tuning Keys
End Address
39. The first phantom powered condenser microphone designed for use by Georg Neumann for Norwegian State Television.
Neumann KM-84
Dynamic Mic Characteristics
Off-Axis
Pad
40. 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.
AudioTechnica AT2020
OSHA Exposure Table
SPL Meter
Dynamic Microphone
41. Small microphone attached to the bridge of a string bass or to an acoustic guitar to amplify its sound.
Subkick
Ribbon Microphone Sensitivity
Shockmount
Pickup
42. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.
Pistonphone
Trombone Mic Placement
Faraday's Law of Magnetic Induction
Dynamic Microphone
43. Sounds that arrive from angles other than the 0
Off-Axis
Packing
Crystal and Ceramic Mic Use
RFI
44. Pair of omni mic separated by a circular absorptive baffle.
Faulkner
Diaphragm
Harvey Fletcher
Jecklin Disk
45. Dynamic; Cardioid; End Address; Manufactured by Shure; Popular musicians' choice due to its sturdy construction and ability to work well with instruments that produce high sound pressure levels.
Shure SM57
Capacitance
Packing
Pistonphone
46. Small coil of wire wrapped around the plastic or aluminum diaphragm of a dynamic microphone.
Voice Coil
AudioTechnica AT4040
Telefunken ELA- M251
Harvey Fletcher
47. Used for stereo miking to ensure correct balance and imaging.
Body
Fingerboard
Shure SM57
Matched Pairs
48. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.
Dynamic Microphone
Faraday Cage
Lowpass Filter
Mono
49. Tube manufactured for the new version of the AKG C12 (called the C12-A); Powered by Norelco.
Roll-Off
On -Axis
DIN
Nuvistor Tube
50. 1 Bidirectional & 1 Cardioid placed coincidentally; Bidirectional faces left and right and cardioid faces the sound; Gives control of the focus and size of the stereo image;
Tube Condenser Microphone
Neumann U87
Leslie Cabinet
M/S Stereo