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Test your basic knowledge |
Microphones Theory
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Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
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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. Divisions on the fingerboard which represent the position of a specific note or tone.
Frets
Examples of Piezoelectric Material
Speed of Sound Underwater
Increasing Output Voltage in Ribbon Mics
2. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
Boom Placement Rule
ORTF
Carbon Microphone
Matched Pairs
3. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Stereo Bar
NOS
Microphone Storage
Percussion Mic Placement
4. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.
Arrays
Measurement Mics
Damping
Binaural Mic
5. The first phantom powered condenser microphone designed for use by Georg Neumann for Norwegian State Television.
Neumann KM-84
Telefunken ELA- M251
Ribbon Mic Characteristics
Magnetic Induction Formula
6. 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.
Shiny Box 46MXL
AKG DYN60
AB Stereo
Subcardioid
7. The measuring device used for loudspeaker room response testing.
AudioTechnica AT4040
Real Time Analyzer (RTA)
LRFB
Spherical Mic
8. Dutch broadcasting stereo mic technique; An X-Y type with the mics 30cm apart and at a 90
Leslie Cabinet
NOS
Measurement Mics
Carbon Microphone Uses
9. 4 coincident mics each positioned at 90
Dynamic Mic Characteristics
OSHA Exposure Table
LRFB
Pascals (Pa)
10. Known as 'The Bottle' this was the first mass - produced condenser mic.
AB Stereo
Headstock
Neumann CMV3
Shure SM58
11. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.
Lowpass Filter
Electret (Word Etymology)
Subcardioid
Casing
12. Pure polar pattern with which the microphone is equally sensitive in all directions; Great for capturing ambiance or room reverb.
Trombone Mic Placement
Omnidirectional
Angle of Max Rejection
5 Common Microphone Transducers
13. Sounds that arrive from angles other than the 0
Off-Axis
Pascals (Pa)
C-Weighting
FFT Analyzer
14. Three or more microphones working together to capture a stereo or surround image of the sound source.
Off-Axis
Arrays
Voice Coil
Neumann KM-84
15. Omnidirectional: 0 - Cardioid: 8 - Supercardioid: 12 dB - Hypercardioid: 6 dB - Bidirectional: 0
Hypercardioid/Supercardioid (Electrical Polar Pattern)
LRFB
Max SPL
Rear Sensitivity (Relative to Front)
16. To capture two perspectives on the same sound.
Dual Mono
Spherical Mic
Harvey Fletcher
Sensitivity
17. 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.
Microphone (Definition)
Bidirectional
AudioTechnica AT2020
Electro Voice RE20
18. Sounds that arrive at the 0
SASS-P
Shure SM58
Pistonphone
On -Axis
19. Coincident pairing angled between 90
Shure KSM Series
Distance Factor (DSF)
Faraday Cage
X/Y
20. An extremely strong acoustic nano- film designed to replace the foil ribbon in ribbon microphones.
End Address
Fingerboard
Neumann CMV3
Roswellite
21. 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.
Dual Mono
Rode NT1A
Wind Screens
Packing
22. 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;
Shure KSM Series
Neumann KM-84
Carbon Microphone
Reisz Marble Mic
23. Quartz; Barium Titaniate - Tourmaline; Rochelle Salt - and even cane sugar.
Pascals (Pa)
AKG D36
AKG D12
Examples of Piezoelectric Material
24. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Spherical Mic
Fundamental Frequency
Headstock
Rudolf Goerike & Ernest Pless
25. 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.
Sealed Ni-Cad Battery
End Address
Capacitance
Counterbalance
26. + & + (Front & rear in equal positive amounts)
FFT Analyzer
Omnidirectional (Electrical Polar Pattern)
Pressure Capsules
Casing
27. Captures sounds arriving 90
Omnidirectional
Parabolic Systems
Baffle
Nuvistor Tube
28. Causes an increase in low frequency response as one gets closer to the source.
Pressure Gradient Capsules
Terry Bozzio
Pad
Proximity Effect
29. 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.
M/S Stereo
Pistonphone
Boom
Neumann KM 184
30. Digital device used to Fourier Forms; Used to measure the specific number of sine waves in a specific frequency in a specific setting.
Cone
FFT Analyzer
Microphone Care...
Parabolic Systems
31. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Electret (Word Etymology)
Trombone Mic Placement
DIN
Angle of Max Rejection
32. Measurement similar to how our hearing works in frequency response charts.
A-Weighting
Types of Pre-Amps for Condenser Mics
Guitar Amp Mic Placement
Mono
33. Used in adverse conditions to protect from elements like sand - or dust.
Roswellite
Wind Screens
Lowpass Filter
Kick Tunnel
34. Tough & rugged; Can work in extremely high SPL environments; Less responsive to transient frequencies b/c of diaphragm mass is heavier than sound waves.
Stereo Bar
Dynamic Mic Characteristics
Headstock
Microphone Storage
35. Changes in air pressure from the front or the back can cause polarity cancellation; Sides have good rejection; Natural polar pattern is bidirectional.
Magnetic Microphone
Pad
AKG C1000S
Pressure Gradient Capsules
36. 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;
Piezoelectric Effect
Theatrophone
Binaural Mic
M/S Stereo
37. First microphone invented by Georg Neumann
Trombone Mic Placement
Capacitor Microphone
Parabolic Systems
Reisz Marble Mic
38. Angle of maximum signal rejection in a microphone polar pattern.
Trumpet Mic Placement
Doubling Ribbon Length
On -Axis
Null Angle
39. The lowest - and usually most intense - frequency of a complex sound; Most often perceived as the sound's basic pitch.
Ribbon Microphone Sensitivity
Jecklin Disk
Fundamental Frequency
Doubling Ribbon Length
40. + (only); (Front capsule alone)
On -Axis
Phase Ports
Crystal & Ceramic Microphones
Cardioid (Electrical Polar Pattern)
41. Microphone with 4 large diaphragm condenser capsules; 3 bidirectional and 1 omni; Can be combined to make any polar pattern.
Lowpass Filter
Soundfield
Omnidirectional (Electrical Polar Pattern)
Snare Drum Mic Placement
42. 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.
Coincident Pair
Proximity Effect
MSM
Shure SM58
43. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
Near Coincident Pair
Dynamic Range
Microphone (Word Etymology)
Fingerboard
44. Adds two outer right and left rear facing mics to a Decca tree for surround sound depth.
Alan Blumlein
Fukada Tree
AudioTechnica AT4040
Carbon Microphone
45. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by Rode; Widely recognised as the world's quietest studio microphone; Ideal for vocals - voiceover - and acoustic instruments.
Rode NT1A
Packing
Types of Field Recording
Microphone (Word Etymology)
46. The head or top of the guitar where the tuning pegs are located.
Boom Placement Rule
Hydrophone
Headstock
Over/Over
47. Bell Labs scientist that was an innovator of many spaced pair and arrayed miking techniques.
Harvey Fletcher
Stereo
Electret (Word Etymology)
AKG C1000S
48. Very robust and durable; Used in telephones until 1990's; Currently finds applications for military use.
Sennheiser MD421
Carbon Microphone Uses
Parabolic Systems
Examples of Piezoelectric Material
49. Vintage Tube Mics hold voltage after being unplugged; Be sure grounds are connected to power cord and that the charge has left microphone prior to striking.
Piezoelectric Effect
Motor
Electret (Word Etymology)
Vintage Tube Mic Precautions
50. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Model 3B Carbon Microphone
End Address
Hypercardioid
Faraday's Law of Magnetic Induction
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