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Test your basic knowledge |
Microphones Theory
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Study First
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. Device used to calibrate sound pressure measurement devices; Emits a single 1 kHz frequency over a sustained period of time.
Pistonphone
Baffle
Bidirectional
Carbon Microphone Uses
2. First to mass produce the condenser microphone in 1929; Improved cutting lathe technology by developing direct drive turntables; Invents 48V Phantom Power to power the new condenser microphone for Norwegian State Television.
Sealed Ni-Cad Battery
Goals of Sound Effects
Georg Neumann
AB Stereo
3. 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;
Neumann CMV3
Lowpass Filter
Carbon Microphone
Voice Coil
4. Modern drummer who has created a large kit and innovated several ways of capturing the sound from his massive kit.
Microphone Care...
Ambient Sound Sensitivity
Terry Bozzio
Reverse Polarity
5. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Pressure Capsules
Real Time Analyzer (RTA)
Crystal & Ceramic Microphones
Interference Tube...
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.
Microphone (Definition)
Shiny Box 46MXL
3:1 Rule
Shure KSM-353
7. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Roswellite
Magnetic Induction Voltage
Bass Amp Mic Placement
3:1 Rule
8. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
Ribbon Microphone
Transient Response
Shure SM81
AudioTechnica AT2020
9. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.
Shiny Box 46MXL
Stereo Bar
Lowpass Filter
Fundamental Frequency
10. The tuning machines of a guitar; Part of the tuning key that strings are threaded through and twisted.
Coincident (Definition)
Interference Tube...
Pad
Machine Head
11. 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.
Phasing
Georg Neumann
Reisz Marble Mic
Lowpass Filter
12. The head or top of the guitar where the tuning pegs are located.
Microphone (Word Etymology)
Highpass Filter
Proximity Effect
Headstock
13. Dutch broadcasting stereo mic technique; An X-Y type with the mics 30cm apart and at a 90
Terry Bozzio
NOS
Wind Screens
On -Axis
14. 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.
Roswellite
Neumann KM 184
OSHA Exposure Table
Rudolf Goerike & Ernest Pless
15. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
Reverse Polarity
Microphone (Word Etymology)
Rode NT1A
Stereo Bar
16. Configured to simulate the spacing and directivity of human hearing; Box shape with two 'ears' on each side.
Crystal Mic Damage
SASS-P
Microphone (Word Etymology)
Max SPL
17. Dynamic; Cardioid; End Address; Manufactured by Sennheiser; Very small and compact; Especially suitable for use with drums and brass instruments; Includes a clip to mount directly on drums.
Nuvistor Tube
Sennheiser e604
Stereo
Harvey Fletcher
18. Condenser; Cardioid; End Address; 48V Required; Manufactured by AudioTechnica; Switchable 80 Hz Hi-Pass Filter; Ideal for professional recording and critical applications in broadcast.
Coverage Angle
Georg Neumann
AudioTechnica AT4051
Types of Field Recording
19. A gradual - continuous decrease in low frequency response.
Ribbon Microphone Sensitivity
AKG D12
Microphone Care...
Roll-Off
20. 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...
Model 3B Carbon Microphone
Bidirectional
Subkick
21. 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.
Kick Tunnel
Neumann U87
Distance Factor
Magnetic Induction Formula
22. Device or transducer used for converting sound waves or acoustical energy into electrical energy
SASS-P
Neumann KM 184
Binaural Mic
Microphone (Definition)
23. Considered to be the best mic ever made; VF14 Tube.
Coincident Pair
Neumann U47
Ribbon Mic Characteristics
Crystal & Ceramic Microphones
24. Captures sounds arriving 90
Roll-Off
Mid/Side
Parabolic Systems
A-Weighting
25. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.
Harvey Fletcher
Microphone Care...
Pistonphone
Reverse Polarity
26. Coincident pairing of two bidirectional mics that make a pattern of crossing Figure 8's.
Blumlein Pairing
Damping
3 Voltages for Phantom Power
Ambient Sound Sensitivity
27. 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.
3:1 Rule
Phasing
AKG D36
MSM
28. 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
Baffle
Doubling Ribbon Length
Cone
Interference Tube...
29. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.
Examples of Piezoelectric Material
Dynamic Microphone
Supercardioid
Electret Condenser
30. The measuring device used for loudspeaker room response testing.
Magnetic Microphone
Off-Axis
Neumann KM 184
Real Time Analyzer (RTA)
31. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.
M/S Stereo
AudioTechnica AT4040
Shure KSM Series
RCA 44BX
32. Method of creating low end effects from a bass drum by creating a tunnel at the mic end thus trapping sound and amplifying low end boost.
Kick Tunnel
Dual Mono
Snare Drum Mic Placement
Magnetic Microphone
33. The combination of the ribbon and magnet in a ribbon microphone.
Guitar Amp Mic Placement
Pascals (Pa)
Leslie Cabinet
Motor
34. Forward facing bipolar mics spaced 20cm apart.
Pascals (Pa)
Faulkner
Types of Pre-Amps for Condenser Mics
Fukada Tree
35. Allow sound to reach the rear of the capsule/diaphragm - to create cardioid - supercardioid - and hypercardioid patterns In single capsule pressure gradient microphones.
Examples of Piezoelectric Material
Goals of Sound Effects
Measurement Mics
Phase Ports
36. The arm of the mic stand; Includes the angle adjust & telescopic adjust.
Boom
Reisz Marble Mic
Model 3B Carbon Microphone
Condenser Microphone
37. Mid-Section of the mic stand; Includes the clutch.
AKG D12
Crystal Mic Damage
AudioTechnica AT4051
Body
38. 4 to 6 ft. from the player; Mic should be placed below the line of sight of the bell - rotated at about 40 degrees off- axis - and tilted upward.
Bandpass
Body
Goals of Sound Effects
Trumpet Mic Placement
39. Sounds that arrive at the 0
Proximity Effect
Binaural Mic
On -Axis
Ambient Sound Sensitivity
40. To oppose with equal weight or force as in the length of the boom arm versus the weight of the microphone.
Altec/Western Electric 639
Bass Amp Mic Placement
Soundfield
Counterbalance
41. Overall measurement close to the overall sound level in frequency response charts.
Body
C-Weighting
Counterbalance
Neumann U87
42. 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.
RFI
Clement Ader
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Capacitance
43. 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.
Shure SM58
Off-Axis
Pad
Crystal & Ceramic Microphones
44. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.
Highpass Filter
Proximity Effect
Guitar Amp Mic Placement
Shure KSM-353
45. Pair of omni mic separated by a circular absorptive baffle.
Neumann CMV3
Fukada Tree
Jecklin Disk
Increasing Output Voltage in Ribbon Mics
46. The reduction in the amplitude of a wave due to the dissipation of wave energy.
Hypercardioid/Supercardioid (Electrical Polar Pattern)
M/S Stereo
Decca Tree
Damping
47. 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.
Pad
Ribbon Microphone Sensitivity
Electret Condenser
Shure SM57
48. Shows the max sound pressure level possible with a certain amount of distortion; Measured in dB (decibels).
Interference Tube...
Shockmount
Omnidirectional (Electrical Polar Pattern)
Max SPL
49. Used in adverse conditions to protect from elements like sand - or dust.
Bidirectional
Wind Screens
Faraday's Law of Magnetic Induction
RCA 44BX
50. Part of a mic stand that the mic stands on.
Legs
Rear Sensitivity (Relative to Front)
Coincident (Definition)
Mono
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