SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
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. Measurement of the mic's sensitivity; Measured in mV/Pa (millivolts per Pascal).
Examples of Piezoelectric Material
Sensitivity
Arrays
Pressure Gradient Capsules
2. The first microphone sold by Shure; Military awarded Shure a contract to build microphones in WWII.
Soundfield
Model 3B Carbon Microphone
AudioTechnica AT4040
Highpass Filter
3. 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.
Neumann KM 184
Ribbon Microphone
SASS-P
Types of Field Recording
4. Changes in air pressure from the front or the back can cause polarity cancellation; Sides have good rejection; Natural polar pattern is bidirectional.
ORTF
Pressure Gradient Capsules
Parabolic Systems
Pad
5. French physicist who pioneered piezoelectricity.
Ribbon Microphone Sensitivity
Crystal & Ceramic Microphones
Pierre Curie
Neumann U67
6. Overall measurement close to the overall sound level in frequency response charts.
Magnetic Induction Formula
Mid/Side
Neumann U87
C-Weighting
7. Use coincident or near coincident pairings; Too many microphones will cause phasing issues.
Goals of Sound Effects
Percussion Mic Placement
Legs
Trumpet Mic Placement
8. The measure of how quickly a mic's diaphragm will react when it is hit by an acoustic sound wave.
Supercardioid
Increasing Output Voltage in Ribbon Mics
Transient Response
Blumlein Pairing
9. Mic in which the diaphragm moves in response to sound waves and an attached pin/rod moves; Coil attached to pin/rod moves alone with the diaphragm.
Neumann KM-84
Coincident (Definition)
Magnetic Microphone
Shure SM57
10. Often look like handheld vocal mics; Talk or sing into the end of the microphone.
End Address
Telefunken ELA- M251
ORTF
Baffle
11. Mounts on a single stand to provide for adjustable spacing and angling between mics.
Subkick
Pistonphone
Stereo Bar
Ribbon Microphone
12. Dutch broadcasting stereo mic technique; An X-Y type with the mics 30cm apart and at a 90
Interference Tube...
Damping
LRFB
NOS
13. Used to make sure you have accurate angles & capsule spacing when miking in stereo.
Crystal Mic Damage
Protractor & Ruler
Crystal & Ceramic Microphones
RCA 44BX
14. Small microphone attached to the bridge of a string bass or to an acoustic guitar to amplify its sound.
Shure KSM Series
Reverse Polarity
Packing
Pickup
15. Developed the condenser microphone in 1916 at Bell Labs.
Nuvistor Tube
Ambient Sound Sensitivity
Shotgun
E.C. Wente
16. Will yield a 6dB increase in output - but will cause a loss of high frequency response.
Types of Pre-Amps for Condenser Mics
Crystal and Ceramic Mic Use
Nuvistor Tube
Doubling Ribbon Length
17. 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.
Distance Factor
Off-Axis
Increasing Output Voltage in Ribbon Mics
SASS-P
18. 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
Stereo
Reisz Marble Mic
Bidirectional (Electrical Polar Pattern)
19. 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.
Headstock
Pop Filter
Interference Tube...
Transducer Type
20. - Omnidirectional: 1 - Cardioid: 1.7 - Supercardioid: 1.9 - Hypercardioid: 2 - Bidirectional: 1.7
Sealed Ni-Cad Battery
Measurement Mics
Binaural Mic
Distance Factor (DSF)
21. When using two microphones reverse the polarity of the bottom mic.
Snare Drum Mic Placement
Noise
AKG C1000S
Frets
22. Omnidirectional: 360
Mono
Coverage Angle
FFT Analyzer
Ribbon Mic Characteristics
23. Extremely narrow area of sensitivity in front with extended reach; Also has multiple lobes which vary in position with frequency; Not made from combining pure patterns - but created by using an interference tube.
LRFB
Ribbon Microphone
Shotgun
Clutch
24. To oppose with equal weight or force as in the length of the boom arm versus the weight of the microphone.
Magnetic Induction Formula
Faulkner
Hydrophone
Counterbalance
25. 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
Hypercardioid
Magnetic Induction Formula
Georg Neumann
AudioTechnica AT2020
26. Shure's ribbon microphone that utilizes Roswellite to prevent ribbon damage.
Carbon Microphone Uses
Ambient Sound Sensitivity
Shure KSM-353
Neumann KM-84
27. German broadcasting stereo mic technique; An X-Y type with the mics 20cm apart and at a 90
Binaural Mic
Soundfield
DIN
Coincident Pair
28. Carbon; Ceramic/Crystal; Magnetic/Dynamic; Ribbon; Condenser
Proximity Effect
5 Common Microphone Transducers
Ribbon Microphone Sensitivity
Types of Field Recording
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.
Subcardioid
RFI
Subkick
Dynamic Microphone
30. 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.
Cone
Machine Head
Ribbon Microphone
Goals of Sound Effects
31. The moving plate of a condenser capacitor; Constructed of a thin piece of metal or thin plastic - such as Mylar - coated with gold or nickel; .05 - 10 microns thick.
Rear Sensitivity (Relative to Front)
Capacitor
Condenser Diaphragm
Powering Condenser Microphones
32. Mics in which sound waves vibrate a piezoelectric crystal that generates a varying voltage.
Neumann U87
Rear Sensitivity (Relative to Front)
Crystal & Ceramic Microphones
Faraday's Law of Magnetic Induction
33. DC Voltage Req'd for capsule polarizing voltage and internal mic preamps; 3 sources: External Power Supply Unit (PSU); Phantom Power; Battery.
Faraday Cage
Coincident (Definition)
Powering Condenser Microphones
Neumann KM 184
34. 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
Pressure Gradient Capsules
Frets
Shockmount
35. Coincident stereo miking techniques that has two microphone diaphragms occupying (as near as possible) the same space; Capsules often on top of each other; Not good for noisy locations.
Pickup
Coincident Pair
Kick Tunnel
Dual Mono
36. Causes an increase in low frequency response as one gets closer to the source.
Proximity Effect
Bass Amp Mic Placement
Matched Pairs
Bidirectional (Electrical Polar Pattern)
37. Shure's newer ribbon studio mics; KSM 353 & 313 (Roswellite); KSM 44 - 32 - & 27.
Altec/Western Electric 639
Vintage Tube Mic Precautions
Pickup
Shure KSM Series
38. Derived from two words; 'electr' from electrostatic and 'et' from magnet.
Magnetic Microphone
Omnidirectional
Pickup
Electret (Word Etymology)
39. Fixed plate that is charged with polarized voltage found in condenser mics; Usually constructed of milled brass; Has a number of holes drilled in it to provide damping for diaphragm.
Backplate
Dynamic Mic Characteristics
Ambient Sound Sensitivity
Doubling Ribbon Length
40. A gradual - continuous decrease in low frequency response.
Baffle
Condenser Microphone
Angle of Max Rejection
Roll-Off
41. Often look like large diaphragm studio mics; Talk or sing into the side of the microphone.
Proximity Effect
Body
Capacitor
Side Address
42. Early example of switchable polar patterns; Had both a dynamic and a ribbon capsule inside of it which when combined produced other polar patterns.
Headstock
Doubling Ribbon Length
Altec/Western Electric 639
Cardioid
43. 12V DC; 24V DC; 48V DC
Pierre Curie
3 Voltages for Phantom Power
Over/Under
Bandpass
44. Shows the level of self- noise from a microphone's internal electronics; Measured in dB (decibels).
Legs
Clutch
Noise
Real Time Analyzer (RTA)
45. 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.
Lowpass Filter
AudioTechnica AT2020
Reverse Polarity
MSM
46. Utilized primarily on condenser and ribbon mics to isolate it from vibrations that might otherwise be transmitted to the microphone through the mic stand.
Angle of Max Rejection
Shockmount
NOS
Sealed Ni-Cad Battery
47. Angle of maximum signal rejection in a microphone polar pattern.
Supercardioid
Null Angle
Trumpet Mic Placement
Voice Coil
48. More compelling sound - giving both depth and perspective.
Real Time Analyzer (RTA)
Stereo
NOS
AKG C414
49. Magnetic field opposite to that which presently exists; Do this on the bottom mic when miking a snare with two mics.
Proximity Effect
Reverse Polarity
SASS-P
AKG D12
50. Proportional to: Magnetic field strength; Length of the conductor; Velocity of conductor moving through the magnetic field.
Magnetic Induction Voltage
Model 3B Carbon Microphone
Headstock
Striking