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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. Sensitive in a slightly narrower pattern in the front than cardioid and has a small lobe at rear; Rejects most signals arriving from 125
Supercardioid
Shockmount
Packing
Off-Axis
2. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Condenser Microphone
Voice Coil
DIN
Body
3. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.
Lowpass Filter
Decca Tree
Faraday's Law of Magnetic Induction
Tuning Keys
4. Sounds that arrive from angles other than the 0
Shotgun
Off-Axis
RFI
Diaphragm
5. 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
Electret Condenser
AKG D12
Electro Voice RE20
Magnetic Induction Formula
6. Stereo configuration using a spaced pair 3-10 feet apart.
Shotgun
Subcardioid
AB Stereo
Boom Placement Rule
7. Device or transducer used for converting sound waves or acoustical energy into electrical energy
Microphone (Definition)
Magnetic Induction Voltage
Faraday's Law of Magnetic Induction
Binaural Mic
8. 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.
Shiny Box 46MXL
Measurement Mics
Condenser Diaphragm
Georg Neumann
9. Tube microphone capable of SPL's over 140dB.
Electret (Word Etymology)
E.C. Wente
Field Mixer
Neumann U67
10. Known as 'The Bottle' this was the first mass - produced condenser mic.
Neumann CMV3
Phasing
Mid/Side
Soundfield
11. 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).
Pressure Capsules
Shure SM58
Bidirectional
Piezoelectric Effect
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.
Body
Cone
Neumann CMV3
3 Voltages for Phantom Power
13. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Lowpass Filter
Casing
Noise
Stereosonic
14. When using two microphones reverse the polarity of the bottom mic.
Noise
Shure Unidyne Series
Snare Drum Mic Placement
Bidirectional (Electrical Polar Pattern)
15. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Model 3B Carbon Microphone
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Packing
Sennheiser e604
16. Used for stereo miking to ensure correct balance and imaging.
Matched Pairs
NOS
Supercardioid
Machine Head
17. Pure polar pattern with which the microphone is equally sensitive in all directions; Great for capturing ambiance or room reverb.
Transient Response
Stereosonic
Omnidirectional
Sennheiser e604
18. The attachment that holds a microphone in place on the mic stand; Comes in various shapes - sizes - and applications.
AKG C12
AKG D36
Clip
DIN
19. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Fingerboard
Magnetic Microphone
Microphone Care...
Blumlein Pairing
20. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Condenser Microphone
Omnidirectional (Electrical Polar Pattern)
Spherical Mic
Neumann KM 184
21. Delicate and require extreme care; NO PHANTOM POWER; Becoming more popular than ever because of highly efficient magnets - lower manufacturing costs - and great fidelity.
Roswellite
3:1 Rule
Transient Response
Ribbon Mic Characteristics
22. Small microphone attached to the bridge of a string bass or to an acoustic guitar to amplify its sound.
Mono
Vintage Tube Mic Precautions
Pickup
Telefunken ELA- M251
23. 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.
Field Mixer
Polar Pattern
Bass Amp Mic Placement
Microphone Storage
24. One of the oldest mics; Diaphragm mounted on & compresses cup of tiny granules of carbon (100 microns big) that increase current flow when compressed by sound waves and vary electrical current; Also called Resistance Mics;
Rudolf Goerike & Ernest Pless
Carbon Microphone
Microphone Care...
Powering Condenser Microphones
25. Developed the condenser microphone in 1916 at Bell Labs.
Pickup
Dynamic Range
E.C. Wente
3:1 Rule
26. 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.
Doubling Ribbon Length
Shure SM58
Vintage Tube Mic Precautions
M/S Stereo
27. 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.
Pierre Curie
Baffle
Arrays
Phasing
28. An electrical device characterized by its capacity to store an electric charge;
Neumann U47
Capacitor
Pop Filter
Microphone (Definition)
29. Considered to be the best mic ever made; VF14 Tube.
Neumann U47
Subcardioid (Electrical Polar Pattern)
Sennheiser MD421
Powering Condenser Microphones
30. 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.
Electret Condenser
Distance Factor
Rode NT1A
Capacitance
31. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Microphone (Word Etymology)
Shure KSM Series
Magnetic Induction Voltage
Bandpass
32. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
Model 3B Carbon Microphone
Lowpass Filter
Spherical Mic
Boom
33. - Omnidirectional: 100% - Cardioid: 33% - Supercardioid: 27% - Hypercardioid: 25% - Bidirectional: 33%
Ambient Sound Sensitivity
Blumlein Pairing
Telefunken ELA- M251
AudioTechnica AT4040
34. Mid-Section of the mic stand; Includes the clutch.
Stereo
Piezoelectric Effect
Body
Coincident (Definition)
35. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Real Time Analyzer (RTA)
Bandpass
Clement Ader
Null Angle
36. To oppose with equal weight or force as in the length of the boom arm versus the weight of the microphone.
NOS
Piezoelectric Effect
Dynamic Microphone
Counterbalance
37. 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.
Mono
Spherical Mic
AudioTechnica AT2020
Ambient Sound Sensitivity
38. 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
Proximity Effect
Altec/Western Electric 639
Pascals (Pa)
Reverse Polarity
39. + & + (Front & rear in equal positive amounts)
Omnidirectional (Electrical Polar Pattern)
Pistonphone
Shure Unidyne Series
Striking
40. 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.
Microphone Care...
Mono
Bandpass
Shure SM58
41. Founded AKG at the end of WWII in Austria.
Max SPL
Rudolf Goerike & Ernest Pless
Shotgun
Capacitor
42. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.
Headstock
Stereo
Terry Bozzio
Pressure Capsules
43. Part of a mic stand that the mic stands on.
AudioTechnica AT2020
RFI
Packing
Legs
44. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Percussion Mic Placement
Clutch
Diaphragm
45. Barrier made of shaped wire covered with a piece of nylon that is placed between a sensitive mic and the talent to avoid damage to the diaphragm of the mic.
LRFB
Trumpet Mic Placement
Pop Filter
DIN
46. Configured to simulate the spacing and directivity of human hearing; Box shape with two 'ears' on each side.
SASS-P
Over/Over
Alan Blumlein
ORTF
47. Used to filter heating current in certain mics; Invented by Georg Neumann.
Sealed Ni-Cad Battery
Magnetic Induction Voltage
Kick Tunnel
Neumann U47
48. Used in adverse conditions to protect from elements like sand - or dust.
Counterbalance
Pascals (Pa)
Wind Screens
Bidirectional
49. Raises the body of the microphone increasing height.
E.C. Wente
Clutch
Null Angle
Shure SM81
50. An electromagnetic microphone - in which a thin - corrugated ribbon is suspended within a high magnetic flux field; Excellent transient response due to the small amount of acoustic energy required to move diaphragm.
ORTF
Sensitivity
Faraday Cage
Ribbon Microphone