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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. Derived from two words; 'electr' from electrostatic and 'et' from magnet.
Diaphragm
Bandpass
Electret (Word Etymology)
3 Voltages for Phantom Power
2. Allows all high frequencies to pass; Blocks the lower frequencies from being processed.
Alan Blumlein
Highpass Filter
Tube Condenser Microphone
Proximity Effect
3. 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
Shotgun
Guitar Amp Mic Placement
Shure KSM Series
Distance Factor (DSF)
4. Flat plate that controls or directs the flow of sound energy in a crystal/ceramic mic.
Trumpet Mic Placement
Baffle
Altec/Western Electric 639
Magnetic Microphone
5. Tube microphone capable of SPL's over 140dB.
OSHA Exposure Table
Shiny Box 46MXL
Neumann U67
Trumpet Mic Placement
6. French broadcasting stereo mic technique; An X-Y type with the mics 17cm apart and at a 110
Over/Under
Faraday's Law of Magnetic Induction
On -Axis
ORTF
7. Divisions on the fingerboard which represent the position of a specific note or tone.
Subkick
Neumann U67
Frets
Distance Factor (DSF)
8. Device used to measure sound loudness; Often used to measure and balance the loudness of each speaker in a home - studio - or live venue or theater system.
SPL Meter
Georg Neumann
Ambient Sound Sensitivity
Ribbon Mic Characteristics
9. 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.
Cardioid
Side Address
Headstock
Bidirectional
10. Modeled to mimic a human head for extremely good spatialization; Shaped like a human head.
Binaural Mic
Capacitance
Headstock
3:1 Rule
11. Coincident pairing that is at 90
Shure KSM-353
Protractor & Ruler
Stereosonic
NOS
12. 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
Powering Condenser Microphones
Matched Pairs
Dual Mono
Leslie Cabinet
13. Tough & rugged microphone that contains an element consisting of a dome- shaped diaphragm and a moving 'voice coil'; Operates on principles of magnetic induction.
Magnetic Induction Formula
Proximity Effect
Pressure Capsules
Dynamic Microphone
14. Part of a mic stand that the mic stands on.
Legs
Headstock
Voice Coil
Shotgun
15. Stereo coincident pairing where the middle mic (usually a cardiod) is facing source and a bidirectional side mic is placed at 90
Mid/Side
Lowpass Filter
Baffle
A-Weighting
16. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
Fingerboard
LRFB
Altec/Western Electric 639
Side Address
17. 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.
Protractor & Ruler
Shure SM81
Proximity Effect
Condenser Microphone
18. Adds two outer right and left rear facing mics to a Decca tree for surround sound depth.
Neumann U87
Noise
Fukada Tree
Guitar Amp Mic Placement
19. Demonstrated the first stereophonic transmissions via the Theatrophone in 1881.
Sennheiser MD441
Types of Pre-Amps for Condenser Mics
Nuvistor Tube
Clement Ader
20. 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;
M/S Stereo
Jecklin Disk
Roll-Off
Pistonphone
21. Small Diaphragm Electret condensers; Extremely flat frequency response; Omnidirectional pattern.
Measurement Mics
Roswellite
Telefunken ELA- M251
Fundamental Frequency
22. Filters only the bandwidth of frequencies that are supposed to (or allowed) to pass through; High and Low Pass are examples.
Bandpass
Cardioid
Distance Factor (DSF)
Omnidirectional
23. Delicate and require extreme care; NO PHANTOM POWER; Becoming more popular than ever because of highly efficient magnets - lower manufacturing costs - and great fidelity.
Ribbon Mic Characteristics
Diaphragm
Reverse Polarity
Altec/Western Electric 639
24. Pair of omni mic separated by a circular absorptive baffle.
Jecklin Disk
M/S Stereo
Matched Pairs
Types of Pre-Amps for Condenser Mics
25. 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
X/Y
ORTF
Microphone (Definition)
26. Sounds that arrive at the 0
Hypercardioid
Microphone (Word Etymology)
Ambient Sound Sensitivity
On -Axis
27. One of the world's greatest condenser microphones prized for the CK12 capsule.
AKG C12
Goals of Sound Effects
Damping
Soundfield
28. 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.
Percussion Mic Placement
Pop Filter
X/Y
Electret Condenser
29. Developed the condenser microphone in 1916 at Bell Labs.
Magnetic Induction Voltage
MSM
Carbon Microphone
E.C. Wente
30. Pair of omni mic elements mounted on opposite sides of a spherical shaped capsule.
Spherical Mic
AKG C1000S
Electro Voice RE20
Powering Condenser Microphones
31. Sounds that arrive from angles other than the 0
Clip
Pierre Curie
Off-Axis
Microphone Care...
32. Reduces the power of a signal used when the trim itself cannot prevent overload in the mic line level signal.
Damping
Shure SM81
Trombone Mic Placement
Pad
33. Forward facing bipolar mics spaced 20cm apart.
Trombone Mic Placement
Bidirectional (Electrical Polar Pattern)
Faulkner
Sennheiser e604
34. Built by AKG for Telefunken and regarded as one of the best vintage condenser microphones ever.
Telefunken ELA- M251
Shure KSM-353
Types of Field Recording
Stereo
35. Electro- acoustic device attached to a transducer that vibrates to receive or produce sound waves which put the device into motion.
DIN
Magnetic Induction Formula
Lowpass Filter
Diaphragm
36. The outer covering of a microphone.
NOS
Fundamental Frequency
Clutch
Casing
37. Big + & - (More front with less opposite rear)
Neumann U67
ORTF
Rode NT1A
Hypercardioid/Supercardioid (Electrical Polar Pattern)
38. The graphic representation plot of the sensitivity of a microphone from any direction over a 360
Sensitivity
Crystal & Ceramic Microphones
Shure Unidyne Series
Polar Pattern
39. 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
Ambient Sound Sensitivity
Frets
RFI
Magnetic Induction Formula
40. 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
Side Address
Clutch
Sealed Ni-Cad Battery
41. 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.
Shure KSM Series
Transducer Type
Pop Filter
Neumann U67
42. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.
Jecklin Disk
Fingerboard
Reverse Polarity
Rudolf Goerike & Ernest Pless
43. 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.
Increasing Output Voltage in Ribbon Mics
Fukada Tree
Side Address
AudioTechnica AT4051
44. EMI employee that was the innovator of many coincident pairing mic techniques; Mid/Side & Blumlein techniques are associated with him.
Sennheiser MD421
Alan Blumlein
Capacitance
Trombone Mic Placement
45. Raises the body of the microphone increasing height.
Fundamental Frequency
Clutch
Speed of Sound Underwater
Null Angle
46. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Distance Factor
Over/Under
Noise
Rode NT1A
47. Microphone with 4 large diaphragm condenser capsules; 3 bidirectional and 1 omni; Can be combined to make any polar pattern.
Soundfield
Examples of Piezoelectric Material
Legs
Shure SM58
48. Dynamic; Super-Cardioid; End Address; Humbucking Coil; Brilliance Switch; Manufactured by Sennheiser; Acknowledged as the most accurate and versatile dynamic mic available.
Fingerboard
Altec/Western Electric 639
Sennheiser MD441
DIN
49. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.
Shure KSM-353
Spaced Pairs
Pad
Reisz Marble Mic
50. Condenser; Cardioid; End Address; Manufactured by Shure; Small condenser design that is great for instrument recording.
Shure SM81
Lowpass Filter
Electro Voice RE20
Microphone (Word Etymology)