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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. 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.
Angle of Max Rejection
Harvey Fletcher
Condenser Diaphragm
M/S Stereo
2. Will yield a 6dB increase in output - but will cause a loss of high frequency response.
Altec/Western Electric 639
Doubling Ribbon Length
Pistonphone
Crystal Mic Damage
3. Measurement of the mic's sensitivity; Measured in mV/Pa (millivolts per Pascal).
Nuvistor Tube
Backplate
Proximity Effect
Sensitivity
4. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.
Dynamic Range
Bandpass
Shure KSM-353
Omnidirectional (Electrical Polar Pattern)
5. Big + & - (More front with less opposite rear)
NOS
Dynamic Mic Characteristics
Reisz Marble Mic
Hypercardioid/Supercardioid (Electrical Polar Pattern)
6. Sounds that may be broadcast over the radio or internet.
Mono
RCA 44BX
A-Weighting
Condenser Microphone
7. Pair of omni mic separated by a circular absorptive baffle.
Faraday's Law of Magnetic Induction
Fundamental Frequency
Jecklin Disk
Electret (Word Etymology)
8. Mid-Section of the mic stand; Includes the clutch.
Body
Pressure Capsules
Bandpass
End Address
9. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.
AudioTechnica AT4040
Fukada Tree
Faraday Cage
SPL Meter
10. 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
Tube Condenser Microphone
Dynamic Microphone
Capacitance
11. Another name for condenser microphone.
Powering Condenser Microphones
Capacitor Microphone
Faulkner
Piezoelectric Effect
12. - Omnidirectional: 1 - Cardioid: 1.7 - Supercardioid: 1.9 - Hypercardioid: 2 - Bidirectional: 1.7
AKG D36
Distance Factor (DSF)
RCA 44BX
Lowpass Filter
13. The combination of the ribbon and magnet in a ribbon microphone.
Nuvistor Tube
Decca Tree
Motor
X/Y
14. 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.
Boom
Electro Voice RE20
Null Angle
Fukada Tree
15. Small coil of wire wrapped around the plastic or aluminum diaphragm of a dynamic microphone.
Voice Coil
Bass Amp Mic Placement
Snare Drum Mic Placement
Arrays
16. 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
Pascals (Pa)
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Magnetic Induction Formula
Microphone (Definition)
17. The method by which microphones are classified.
Transducer Type
Rudolf Goerike & Ernest Pless
Voice Coil
Polar Pattern
18. Coincident pairing angled between 90
Backplate
Piezoelectric Effect
X/Y
Arrays
19. Polar pattern produced when you add a little bit of bidirectional to the omni pattern.
Electro Voice RE20
Subcardioid
Cardioid
Damping
20. 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.
Bidirectional
Sennheiser MD441
Carbon Microphone Uses
Body
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).
AKG DYN60
Piezoelectric Effect
Dynamic Range
End Address
22. 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.
Stereo
Reisz Marble Mic
Distance Factor
Roll-Off
23. 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.
Magnetic Induction Formula
Transient Response
Cone
Sennheiser MD421
24. One of the world's greatest condenser microphones prized for the CK12 capsule.
Supercardioid
Model 3B Carbon Microphone
AKG C12
End Address
25. Sub- frequency (below 100Hz) capture device designed for use with kick drums and floor toms as an alternative or supplement to a traditional microphone.
Tuning Keys
Subkick
AKG DYN60
Rudolf Goerike & Ernest Pless
26. Shows the total range of the mic's internal pre- amp; Measured in dB (decibels).
Snare Drum Mic Placement
Dynamic Range
Boom Placement Rule
5 Common Microphone Transducers
27. 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;
Diaphragm
Angle of Max Rejection
Capacitor Microphone
Carbon Microphone
28. Demonstrated the first stereophonic transmissions via the Theatrophone in 1881.
Carbon Microphone Uses
Pressure Gradient Capsules
Clement Ader
Altec/Western Electric 639
29. Big + & + (More front with less positive rear)
Subcardioid (Electrical Polar Pattern)
Phasing
Jecklin Disk
Tube Condenser Microphone
30. Tube microphone capable of SPL's over 140dB.
Roswellite
Parabolic Systems
Neumann U67
Sennheiser MD421
31. Three or more microphones working together to capture a stereo or surround image of the sound source.
DIN
NOS
Stereosonic
Arrays
32. 12V DC; 24V DC; 48V DC
Neumann U87
Doubling Ribbon Length
Shure Unidyne Series
3 Voltages for Phantom Power
33. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Off-Axis
Sennheiser MD441
Percussion Mic Placement
Arrays
34. Solid state version of the U67.
Neumann U87
Damping
Dynamic Mic Characteristics
3 Voltages for Phantom Power
35. Considered to be the best mic ever made; VF14 Tube.
Distance Factor
Neumann U47
Field Mixer
Carbon Microphone Uses
36. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.
X/Y
Reverse Polarity
Trombone Mic Placement
Body
37. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
ORTF
Pressure Capsules
Striking
Motor
38. Part of a mic stand that the mic stands on.
Legs
Magnetic Induction Voltage
Clutch
Reisz Marble Mic
39. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.
AKG C12
Packing
Jecklin Disk
Telefunken ELA- M251
40. + & - (Front & rear in opposite equal amounts)
Highpass Filter
Pistonphone
Bidirectional (Electrical Polar Pattern)
Examples of Piezoelectric Material
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.
Terry Bozzio
5 Common Microphone Transducers
Trombone Mic Placement
Magnetic Microphone
42. 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.
Subkick
Coverage Angle
AudioTechnica AT2020
Polar Pattern
43. The first AKG dynamic microphone.
Hypercardioid
Microphone Care...
5 Common Microphone Transducers
AKG DYN60
44. 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.
Coincident Pair
Polar Pattern
3 Voltages for Phantom Power
Jecklin Disk
45. + & + (Front & rear in equal positive amounts)
Shiny Box 46MXL
Damping
Omnidirectional (Electrical Polar Pattern)
Pickup
46. Early example of switchable polar patterns; Had both a dynamic and a ribbon capsule inside of it which when combined produced other polar patterns.
Altec/Western Electric 639
Neumann CMV3
Bass Amp Mic Placement
Pad
47. 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.
Max SPL
Supercardioid
Decca Tree
Faraday's Law of Magnetic Induction
48. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.
Piezoelectric Effect
Faraday's Law of Magnetic Induction
Alan Blumlein
Side Address
49. Radio Frequency Interference
Subcardioid
Cardioid
Arrays
RFI
50. Microphone with 4 large diaphragm condenser capsules; 3 bidirectional and 1 omni; Can be combined to make any polar pattern.
Backplate
Polar Pattern
Soundfield
Georg Neumann