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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. Pair of omni mic separated by a circular absorptive baffle.
Hydrophone
Max SPL
Pierre Curie
Jecklin Disk
2. Used in adverse conditions to protect from elements like sand - or dust.
Subcardioid (Electrical Polar Pattern)
Capacitor Microphone
Wind Screens
Magnetic Induction Formula
3. Basket/grille made out of a specific type of copper wire to block protect the mic from physical damage and to protect the mic from stray RFI
Microphone Care...
Faraday Cage
Stereo Bar
Backplate
4. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Clutch
Magnetic Induction Formula
Lowpass Filter
Noise
5. Delicate and require extreme care; NO PHANTOM POWER; Becoming more popular than ever because of highly efficient magnets - lower manufacturing costs - and great fidelity.
Noise
Ribbon Mic Characteristics
Sealed Ni-Cad Battery
Georg Neumann
6. Tube manufactured for the new version of the AKG C12 (called the C12-A); Powered by Norelco.
Nuvistor Tube
Decca Tree
On -Axis
Model 3B Carbon Microphone
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.
Arrays
Decca Tree
Boom
Proximity Effect
8. Dynamic; Cardioid; End Address; Manufactured by Electro Voice; Large Diaphragm; Humbucking Coil; Bass Roll Off Switch; Minimizes proximity effect; Ideal for broadcasting and sound engineering techniques.
Doubling Ribbon Length
Neumann KM 184
Electro Voice RE20
ORTF
9. The graphic representation plot of the sensitivity of a microphone from any direction over a 360
Polar Pattern
AudioTechnica AT4051
Subkick
Rudolf Goerike & Ernest Pless
10. 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
Jecklin Disk
AudioTechnica AT4040
Sennheiser e604
11. When using two microphones reverse the polarity of the bottom mic.
Spherical Mic
Snare Drum Mic Placement
Stereosonic
Legs
12. 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.
5 Common Microphone Transducers
Cone
Pascals (Pa)
Kick Tunnel
13. Developed the condenser microphone in 1916 at Bell Labs.
E.C. Wente
Arrays
Hydrophone
Side Address
14. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.
Pop Filter
Alan Blumlein
Null Angle
Striking
15. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser
Angle of Max Rejection
Neumann U47
5 Common Microphone Transducers
Electret (Word Etymology)
16. Reduces the power of a signal used when the trim itself cannot prevent overload in the mic line level signal.
A-Weighting
Sennheiser e604
End Address
Pad
17. - Omnidirectional: 100% - Cardioid: 33% - Supercardioid: 27% - Hypercardioid: 25% - Bidirectional: 33%
AKG DYN60
Ambient Sound Sensitivity
Mid/Side
Fundamental Frequency
18. Determined by: Ribbon Thickness (about 3 to 6 microns); Corrugations/Inch; Tension of the Ribbon.
5 Common Microphone Transducers
Ribbon Microphone Sensitivity
Theatrophone
Arrays
19. More compelling sound - giving both depth and perspective.
Stereo
Sennheiser MD421
Off-Axis
Snare Drum Mic Placement
20. First microphone invented by Georg Neumann
Bidirectional
AudioTechnica AT2020
Shure SM58
Reisz Marble Mic
21. 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.
AudioTechnica AT4040
M/S Stereo
Null Angle
Condenser Microphone
22. 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.
RCA 44BX
SPL Meter
Polar Pattern
Frets
23. Small Diaphragm Electret condensers; Extremely flat frequency response; Omnidirectional pattern.
Measurement Mics
RFI
Legs
Over/Under
24. 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.
Powering Condenser Microphones
Dynamic Mic Characteristics
Capacitance
Leslie Cabinet
25. Divisions on the fingerboard which represent the position of a specific note or tone.
Frets
Diaphragm
Powering Condenser Microphones
AKG C12
26. The combination of the ribbon and magnet in a ribbon microphone.
Types of Field Recording
Pickup
Motor
Hypercardioid/Supercardioid (Electrical Polar Pattern)
27. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Blumlein Pairing
Pierre Curie
Parabolic Systems
Ambient Sound Sensitivity
28. One of the world's greatest condenser microphones prized for the CK12 capsule.
Clutch
Model 3B Carbon Microphone
AKG C12
Telefunken ELA- M251
29. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.
Pierre Curie
Over/Over
Pressure Capsules
Noise
30. 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.
Telefunken ELA- M251
Field Mixer
Spaced Pairs
Theatrophone
31. Electro- acoustic device attached to a transducer that vibrates to receive or produce sound waves which put the device into motion.
Bandpass
AB Stereo
Diaphragm
AudioTechnica AT4040
32. Used to make sure you have accurate angles & capsule spacing when miking in stereo.
Protractor & Ruler
Boom Placement Rule
Clip
Doubling Ribbon Length
33. Considered to be the best mic ever made; VF14 Tube.
3:1 Rule
Omnidirectional (Electrical Polar Pattern)
Bass Amp Mic Placement
Neumann U47
34. Captures sounds arriving 90
Fingerboard
Parabolic Systems
Leslie Cabinet
Neumann U47
35. The first phantom powered condenser microphone designed for use by Georg Neumann for Norwegian State Television.
Altec/Western Electric 639
Goals of Sound Effects
Neumann KM-84
Crystal Mic Damage
36. Another name for condenser microphone.
Noise
Ribbon Microphone
Hypercardioid
Capacitor Microphone
37. Commonly found in acoustic guitar pickups; Ceramic piezoelectric material is used in hydrophones (underwater mics) because of durability.
Coverage Angle
Crystal and Ceramic Mic Use
Subcardioid (Electrical Polar Pattern)
Theatrophone
38. 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.
Neumann KM-84
Capacitor
Bidirectional
Shure Unidyne Series
39. Solid state version of the U67.
Neumann U87
Pierre Curie
Diaphragm
Sennheiser e604
40. An instrument for detecting sound transmitted through water commonly manufactured using ceramic piezoelectric material.
Model 3B Carbon Microphone
Hydrophone
Microphone (Word Etymology)
Proximity Effect
41. The world's first single element cardioid mics.
Soundfield
Over/Under
Shure Unidyne Series
Trumpet Mic Placement
42. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
Bandpass
Crystal and Ceramic Mic Use
M/S Stereo
ORTF
43. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
OSHA Exposure Table
Microphone Storage
Microphone (Word Etymology)
Polar Pattern
44. Derived from two words; 'electr' from electrostatic and 'et' from magnet.
Stereo Bar
Types of Pre-Amps for Condenser Mics
Electret (Word Etymology)
Over/Under
45. 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.
Microphone Storage
Packing
Pressure Capsules
Crystal & Ceramic Microphones
46. Extremely narrow area of sensitivity in front with extended reach; Also has multiple lobes which vary in position with frequency; Not made from combining pure patterns - but created by using an interference tube.
Blumlein Pairing
Shotgun
Arrays
AB Stereo
47. Raises the body of the microphone increasing height.
Carbon Microphone
Over/Over
Clutch
Dynamic Microphone
48. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.
Terry Bozzio
Pascals (Pa)
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Wind Screens
49. Works exactly like condenser mic but one of the two plates is manufactured as a capsule with a permanent static charge so there is no external power source necessary; Requires phantom or battery to charge internal mic preamp.
Snare Drum Mic Placement
Electret Condenser
Noise
Clement Ader
50. 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
Pascals (Pa)
Transducer Type
X/Y
Stereo Bar