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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. Used for stereo miking to ensure correct balance and imaging.
OSHA Exposure Table
Matched Pairs
Rode NT1A
3:1 Rule
2. Commonly utilize large diaphragm dynamic mics.
Bass Amp Mic Placement
Side Address
SASS-P
Sensitivity
3. 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
Shure SM81
Pascals (Pa)
Faulkner
Sealed Ni-Cad Battery
4. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Electro Voice RE20
Tube Condenser Microphone
Bandpass
Phasing
5. Founded AKG at the end of WWII in Austria.
Rudolf Goerike & Ernest Pless
Leslie Cabinet
Highpass Filter
On -Axis
6. Device or transducer used for converting sound waves or acoustical energy into electrical energy
Dual Mono
Microphone (Definition)
AKG D36
Subcardioid (Electrical Polar Pattern)
7. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.
Hydrophone
Binaural Mic
Fingerboard
Baffle
8. Shure's newer ribbon studio mics; KSM 353 & 313 (Roswellite); KSM 44 - 32 - & 27.
X/Y
Over/Over
Snare Drum Mic Placement
Shure KSM Series
9. Increasing magnetic field strength is the only practical means of increasing output voltage; Conductor movement is limited due to tension of the ribbon; and ribbon length increases lead to a loss of high frequency response.
On -Axis
Crystal and Ceramic Mic Use
Increasing Output Voltage in Ribbon Mics
Types of Field Recording
10. The method by which microphones are classified.
Transducer Type
Leslie Cabinet
Model 3B Carbon Microphone
Supercardioid
11. 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.
Shure Unidyne Series
Baffle
Ribbon Microphone
Polar Pattern
12. To oppose with equal weight or force as in the length of the boom arm versus the weight of the microphone.
Sennheiser e604
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Shockmount
Counterbalance
13. When using two microphones reverse the polarity of the bottom mic.
Snare Drum Mic Placement
Pressure Gradient Capsules
Ribbon Microphone
Tube Condenser Microphone
14. Captures sounds arriving 90
Parabolic Systems
Jecklin Disk
Faraday's Law of Magnetic Induction
Hydrophone
15. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Stereosonic
DIN
Percussion Mic Placement
Spherical Mic
16. + (only); (Front capsule alone)
Cardioid (Electrical Polar Pattern)
Distance Factor (DSF)
Sennheiser MD421
Sealed Ni-Cad Battery
17. Known as 'The Bottle' this was the first mass - produced condenser mic.
Neumann CMV3
Wind Screens
Dual Mono
NOS
18. To break down or disassemble any portion of a set or stage set- up.
AKG C414
Striking
Coverage Angle
Matched Pairs
19. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Backplate
Faraday's Law of Magnetic Induction
Percussion Mic Placement
Legs
20. Determined by: Ribbon Thickness (about 3 to 6 microns); Corrugations/Inch; Tension of the Ribbon.
Packing
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Roswellite
Ribbon Microphone Sensitivity
21. 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.
Noise
Cone
Capacitance
Clutch
22. Big + & + (More front with less positive rear)
Faraday's Law of Magnetic Induction
Rear Sensitivity (Relative to Front)
Subcardioid (Electrical Polar Pattern)
AKG C414
23. Best signal- to- noise ratio; Minimal phase cancellation; Quality representation of what is being recorded; Attempt to ignore unwanted external noise.
Omnidirectional
Phasing
Goals of Sound Effects
Baffle
24. Term coined by Sir Charles Wheatstone derived from the Greek words 'micro' (small) & 'phon' (sound).
Microphone (Word Etymology)
Neumann KM 184
Rode NT1A
Doubling Ribbon Length
25. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
5 Common Microphone Transducers
OSHA Exposure Table
Striking
Shure SM81
26. Allows all low frequencies to pass; Blocks the higher frequencies from being processed.
Lowpass Filter
Nuvistor Tube
Backplate
Crystal & Ceramic Microphones
27. Adds two outer right and left rear facing mics to a Decca tree for surround sound depth.
Neumann U67
Fukada Tree
Backplate
Transducer Type
28. Raises the body of the microphone increasing height.
AKG D36
Clutch
Highpass Filter
Leslie Cabinet
29. 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.
Casing
3:1 Rule
Fukada Tree
Electret Condenser
30. Sounds that arrive from angles other than the 0
Hypercardioid
Magnetic Microphone
Off-Axis
Mid/Side
31. Verify that the boom is placed over a microphone leg prior to use to provide added balance and stability.
Highpass Filter
Phase Ports
Shotgun
Boom Placement Rule
32. 4 coincident mics each positioned at 90
AB Stereo
LRFB
Baffle
Spaced Pairs
33. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Roll-Off
Mid/Side
Magnetic Induction Voltage
Arrays
34. Reduces the power of a signal used when the trim itself cannot prevent overload in the mic line level signal.
Machine Head
Nuvistor Tube
Pad
Sennheiser MD441
35. Radio Frequency Interference
Cardioid (Electrical Polar Pattern)
RFI
Pressure Capsules
Phase Ports
36. The lowest - and usually most intense - frequency of a complex sound; Most often perceived as the sound's basic pitch.
Terry Bozzio
Fundamental Frequency
Neumann CMV3
Bidirectional (Electrical Polar Pattern)
37. Omnidirectional: 360
Protractor & Ruler
Rudolf Goerike & Ernest Pless
Coverage Angle
Headstock
38. 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;
SPL Meter
Subcardioid
M/S Stereo
Body
39. A gradual - continuous decrease in low frequency response.
Bidirectional (Electrical Polar Pattern)
Transient Response
AKG C1000S
Roll-Off
40. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.
Clip
Rear Sensitivity (Relative to Front)
Binaural Mic
Magnetic Microphone
41. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.
Sennheiser MD441
Real Time Analyzer (RTA)
Hypercardioid/Supercardioid (Electrical Polar Pattern)
Sealed Ni-Cad Battery
42. 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.
Shure KSM-353
Phasing
Wind Screens
Neumann CMV3
43. Very robust and durable; Used in telephones until 1990's; Currently finds applications for military use.
Bidirectional
Phasing
Carbon Microphone Uses
Magnetic Microphone
44. Cable wrapping method that keeps every coil on top of the next; May cause interference and tiny curls or tangles.
Boom Placement Rule
Carbon Microphone
MSM
Over/Over
45. The first cardioid pattern dynamic microphone.
Reverse Polarity
Microphone (Definition)
Clement Ader
AKG D12
46. 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
Diaphragm
Shockmount
Omnidirectional
47. Condenser; Cardioid; Side Address; 48V Required; Large Diaphragm; Manufactured by AudioTechnica; Transformerless circuitry virtually eliminates low- frequency distortion.
Types of Pre-Amps for Condenser Mics
Coincident (Definition)
NOS
AudioTechnica AT4040
48. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.
MSM
Shure KSM-353
Shure SM81
Vintage Tube Mic Precautions
49. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.
Magnetic Induction Voltage
Reverse Polarity
Increasing Output Voltage in Ribbon Mics
Omnidirectional
50. Microphone consisting of two parallel metal plates - each holding an opposing charge (+ or -) and thus creating a capacitor to induce an electrical charge as sound waves move the diaphragm; Require a solid- state or tube preamplifier.
Condenser Microphone
AudioTechnica AT4051
Blumlein Pairing
Shiny Box 46MXL