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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. Moving a conductor (a coil of wire) through a magnetic field will cause a voltage to be induced across the conductor.
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2. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
Fingerboard
3:1 Rule
Tuning Keys
Shure SM81
3. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Crystal & Ceramic Microphones
Guitar Amp Mic Placement
Boom Placement Rule
Bandpass
4. The attachment that holds a microphone in place on the mic stand; Comes in various shapes - sizes - and applications.
Clip
Mid/Side
Subkick
Spherical Mic
5. Used by government agencies to determine safe sound exposure levels (in dB) over a period of time; 85 - 90 dB = 16 hrs. of safe exposure time at 85 dB; Decreases to 8 hrs. of safe exposure time at 90 dB.
OSHA Exposure Table
Diaphragm
Voice Coil
Wind Screens
6. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
Boom
M/S Stereo
Pressure Gradient Capsules
Shockmount
7. Condenser; Multiple; Side Address; 48V Required; Manufactured by AKG; Dual Diaphragm; Nine selectable pickup patterns; Peak Hold LED; The reference microphone for almost all comparative microphone tests.
Model 3B Carbon Microphone
Shure SM58
AKG C414
Goals of Sound Effects
8. Condenser; Cardioid; End Address; 48V Required; Manufactured by Neumann; Consists of three compact miniature microphones; Has a gentle rise at about 9 kHz that provides tonal balance that is fresher and livelier.
Crystal and Ceramic Mic Use
Shure Unidyne Series
Types of Field Recording
Neumann KM 184
9. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.
Baffle
Transducer Type
Motor
3:1 Rule
10. Tube with ports down the side with the mic capsule at the bottom; Sounds entering the tube from on - axis interact inside the tube with the sounds coming in through the side ports - an interfere with each other in such a way as to partially cancel of
Damping
Interference Tube...
Bandpass
Clutch
11. + & - (Front & rear in opposite equal amounts)
Reisz Marble Mic
Crystal and Ceramic Mic Use
Neumann U67
Bidirectional (Electrical Polar Pattern)
12. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.
Shockmount
Sennheiser e604
Machine Head
OSHA Exposure Table
13. To break down or disassemble any portion of a set or stage set- up.
Snare Drum Mic Placement
Striking
Shockmount
Cone
14. 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.
Neumann U67
Pascals (Pa)
Piezoelectric Effect
Pop Filter
15. Voltage applied to piezoelectric material will cause it to deform or change shape; NO PHANTOM POWER!
Dynamic Microphone
Microphone (Definition)
Crystal Mic Damage
Neumann U47
16. Demonstrated the first stereophonic transmissions via the Theatrophone in 1881.
Off-Axis
Carbon Microphone Uses
Bandpass
Clement Ader
17. Raises the body of the microphone increasing height.
Clutch
SASS-P
Spaced Pairs
Tuning Keys
18. Three or more microphones working together to capture a stereo or surround image of the sound source.
Arrays
End Address
Microphone Care...
Voice Coil
19. Pair of cardioids facing to the front and rear - plus a sideways - facing figure 8; Mid- sides pair plus another rear- facing cardioid which is combined with the same Figure 8 mic for the surrounds.
MSM
Matched Pairs
Magnetic Induction Formula
Supercardioid
20. Close mic placement can help guard again bleed from other instruments and takes advantage of proximity effect; Center of cone = Brighter; Outside of cone = Darker; Reflections can create phase issues (can be reduced by putting the cabinet at an angle
Guitar Amp Mic Placement
Dynamic Microphone
Fukada Tree
Microphone (Word Etymology)
21. Sounds that arrive from angles other than the 0
Subkick
Reverse Polarity
Increasing Output Voltage in Ribbon Mics
Off-Axis
22. The first dynamic microphone with changeable polar patterns.
Machine Head
AKG C414
RFI
AKG D36
23. 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.
Legs
Tube Condenser Microphone
AudioTechnica AT4040
Distance Factor
24. Aluminum Ribbon - Bi-Polar (Figure 8); Side Address; Manufactured by Shiny Box; Buttery mid- range improves digital recordings and smooths out modern treble; Best on drums - piano - overheads - and vocals where treble is focused.
AKG C414
Types of Pre-Amps for Condenser Mics
Ribbon Mic Characteristics
Shiny Box 46MXL
25. Device used to calibrate sound pressure measurement devices; Emits a single 1 kHz frequency over a sustained period of time.
Null Angle
Coincident Pair
Pistonphone
Trumpet Mic Placement
26. 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.
Clutch
Spaced Pairs
AKG D36
Matched Pairs
27. The graphic representation plot of the sensitivity of a microphone from any direction over a 360
Measurement Mics
Pressure Gradient Capsules
Polar Pattern
Voice Coil
28. Pure polar pattern with which the microphone is equally sensitive in all directions; Great for capturing ambiance or room reverb.
Omnidirectional
Binaural Mic
Types of Pre-Amps for Condenser Mics
Dual Mono
29. Microphone with 4 large diaphragm condenser capsules; 3 bidirectional and 1 omni; Can be combined to make any polar pattern.
Shockmount
Dynamic Range
Soundfield
Bidirectional
30. Digital device used to Fourier Forms; Used to measure the specific number of sine waves in a specific frequency in a specific setting.
FFT Analyzer
Faulkner
Magnetic Microphone
Magnetic Induction Voltage
31. An electrical device characterized by its capacity to store an electric charge;
Capacitor
Neumann KM 184
Clement Ader
Pad
32. 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;
Carbon Microphone
Spherical Mic
Neumann U47
Transient Response
33. 4 coincident mics each positioned at 90
LRFB
Hydrophone
Subkick
Pickup
34. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.
Alan Blumlein
Microphone (Definition)
Interference Tube...
Angle of Max Rejection
35. Older ribbon microphone weighing 8.5 lbs. nearly all of it the large magnet!
C-Weighting
RCA 44BX
Machine Head
Microphone (Word Etymology)
36. + & + (Front & rear in equal positive amounts)
Omnidirectional (Electrical Polar Pattern)
Types of Pre-Amps for Condenser Mics
Headstock
Fingerboard
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.
AudioTechnica AT2020
Clip
Casing
Reverse Polarity
38. Measurement of the mic's sensitivity; Measured in mV/Pa (millivolts per Pascal).
Spherical Mic
Polar Pattern
Sensitivity
Speed of Sound Underwater
39. Causes an increase in low frequency response as one gets closer to the source.
Striking
Shure SM57
Supercardioid
Proximity Effect
40. 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
Magnetic Induction Formula
Shure KSM-353
Off-Axis
Hydrophone
41. Stereo configuration using a spaced pair 3-10 feet apart.
Supercardioid
AB Stereo
AudioTechnica AT4051
Mono
42. 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
Shure KSM Series
RFI
43. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Model 3B Carbon Microphone
Tuning Keys
Fukada Tree
Hypercardioid/Supercardioid (Electrical Polar Pattern)
44. Condenser; Cardioid/Hypercardioid; End Address; 48V Required; Manufactured by AKG; Can be powered by internal 9 V battery for field recording; Improves clarity of speech with the PB 1000 Presence Boost Adapter.
Shure SM57
Blumlein Pairing
AKG C1000S
Arrays
45. The world's first single element cardioid mics.
AKG C1000S
Shure Unidyne Series
Trumpet Mic Placement
RFI
46. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Increasing Output Voltage in Ribbon Mics
Magnetic Induction Voltage
Types of Field Recording
Bass Amp Mic Placement
47. Commonly utilize large diaphragm dynamic mics.
Magnetic Induction Voltage
Snare Drum Mic Placement
Bass Amp Mic Placement
Microphone Care...
48. 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
ORTF
Microphone Storage
Leslie Cabinet
AKG C1000S
49. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
M/S Stereo
Noise
Pressure Capsules
Microphone (Word Etymology)
50. Overall measurement close to the overall sound level in frequency response charts.
Carbon Microphone Uses
Speed of Sound Underwater
Hypercardioid/Supercardioid (Electrical Polar Pattern)
C-Weighting